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Some subjects of the fish processing is relevant to food science and home science (UGC-NET) having two chapters from food science
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No Dear
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Any expected metabolic changes or protein differences exist in properly bled and blood-retained animals. Since blood is retained in improperly slaughtered animals, can heme-iron or any other component of blood accelerate muscle tissue catabolism? do you know anyone worked in this area, or paper published on this problem...
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Research from the Max-Rubner-Institute showed, that improper bleeding of pigs resulted in a higher pH-Value of the meat. (Published in German).
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Hi,
Can someone kindly help me to download the supplementary file from the paper published in This Food Science Journal.
I could not seem to locate where the supplementary file is actually located in the website. Other publishing house like ACS or RSC keep these fie as a pdf link, which are easy to locate. Does Elsevier provide these file free of cost?
Thank you for your time
With regards
Hesam
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Thank you ramim, you made my day.
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Greetings to all colleagues: I would like you to help me find free journals (without fee publication) in food science of food microbiology or dairy products or food fermentation..
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Journals edited by elsiever.
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I have completed my bachelor in Food and Process Engineering. I am enrolled in a Masters of Engineering in Food Science and Technology course in South Korea. Recently I am exploring labs for my upcoming PhD career. I want to know in which departments other than food science/engineering/technology, we food science graduates can enrol for PhD. My specialisation is food chemistry.
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Another suggestion, and highly needed: Food Forensics. I spent my carrier in foods doing Food Forensics/problem solving and I always had a backlog of requests for help often by as much as 12-14 such requests. Some from the company I worked for and some from its customers. I had to advertise a little up front, but very quickly word of mouth was all I needed to stay extremely busy. Various forms of imaging (light, electron, C- X-ray), elemental analysis and chemical analysis. My book “Food Forensics” gives the how-to.
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Lipids are highly soluble in non-polar solvent but not in polar solvent like water. What is the explanation for this phenomenon from the point of view of their chemistry?
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Lipids are non-polar molecules, due to the presence of long chain hydrocarbons. Organic solvents are non-polar solvents whereas water is a polar solvent. We know that, "like dissolves like". So, non-polar molecules are dissolved in non-polar solvents and vice-versa.
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Currently, I am looking for free-to-publish journals with an impact factor of more than 4 or 5 in food science and nutrition. It would be very helpful if anyone could suggest some good journals with free or low-cost publication processes. Thanks, anyone in advance if you provide any information or guidance.
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I would aim for subscription-based journals (or hybrid journals where you decline the open access option), these journals are in most cases free of costs. Some examples are:
-Journal of Food Science and Technology (JFST) (https://www.springer.com/journal/13197 ). Impact factor 3.117
-Journal of Food Science (https://ift.onlinelibrary.wiley.com/journal/17503841 ). Impact factor 3.693
-Journal of the Science of Food and Agriculture (https://onlinelibrary.wiley.com/journal/10970010 ). Impact factor 4.125
-Food Bioscience (https://www.sciencedirect.com/journal/food-bioscience ). Impact factor 5.318
-Food Chemistry (https://www.journals.elsevier.com/food-chemistry ). Impact factor 9.231
If you consider journals without the impact factor >4-5 ‘requirement’ you might check the list of open access journals free of costs:
Best regards.
PS. Try to avoid predatory journals. Potential predatory publishers you can check in the Beall’s list (https://beallslist.net and https://beallslist.net/#update ) and potential predatory so-called stand-alone journals you can check here https://beallslist.net/standalone-journals/ and https://beallslist.net/standalone-journals/#update
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Dear friends;
What is the titratable acidity of plasma in butter?
How can I measure?
Thanks in advance.
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First you should determine fat content in butter. The rest is butter plasma. Example: fat content is 80% (butter plasma is 20%) and total acidity is 0.05%. The acidity of butter plasma is 100*0.05/20 = 0.25%
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I have written a review manuscript based on use of phytochemicals in cancer treatment. Please suggest journals in area of food science.
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nutrition and cancer with Turnaround Time of 3 months
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Hello Dears, would list Food Science and Nutrition related best journals with their publisher, please? Also their index?
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I am developing a biopolymer starch; and I need to determine the carbon content of each sample in which I will do the test (biopolymer, low-density polymer and cellulose) in order to calculate the theoretical amount of carbon dioxide; the problem is I do not know how to determine the carbon content on polymers. Thank you
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The norm ISO 17556 refers to the measurement of the BIODEGRADABLE fraction of C in your polymer. It is a respirometric test. You need the Gas Endeavour equipment: https://bpcinstruments.com/biodegradability-compostability/?gclid=CjwKCAjwquWVBhBrEiwAt1Kmwk-g8s-R_YkbXphn_RMwcc6592PGOo2BeENbMjmByY5bx19lRmw6jBoC7CIQAvD_BwE
Please contact Alberto Benavides for a quote: ab@bpcinstruments.com
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The 2023 ranking is available through the following link:
QS ranking is relatively familiar in scientific circles. It ranks universities based on the following criteria:
1- Academic Reputation
2- Employer Reputation
3- Citations per Faculty
4- Faculty Student Ratio
5- International Students Ratio
6- International Faculty Ratio
7- International Research Network
8- Employment Outcomes
- Are these parameters enough to measure the superiority of a university?
- What other factors should also be taken into account?
Please share your personal experience with these criteria.
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Cenk Tan; There are, of course, several websites that rank the universities worldwide. However, QS is the most famous of which.
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Can anyone suggest a SCIE/ Scopus indexed (IF 0.5 - 2.5 preferred) journal in Food Nutrition/ Functional Foods/ Clinical Nutrition categories that accept Reviews?
Especial requirement is the higher number of volumes per annum and lower review time.
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Dear Dr. Madhura Jayasinghe these two journals in food science, kindly check their links that may be useful to what you want.
Functional Foods in Health and Disease
Current Research in Nutrition and Food Science
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I'm looking for a PhD scholarship in Food Science and related areas, can anyone suggest me?
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Please search in Google and write your desired position... best wishes Belay Dereje
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It is rich in B vitamins, ascorbic acid and even contains chlorophyll which will degrade at high temperature. 
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I am also interested to know about this. How to preserve the color and quality of chlorophyll in wheat juice and preserve it for many days.
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I got an invitation that seems odd to me, perhaps this could be a scam but I'm not sure. I've learned that early carrier researchers are very prone to predators. One of my works in the field of computational chemistry was supposedly assessed as fitting for a food science conference. Do you happen to know anything about this conference and the organizer ScientexConference? Is this a scam?
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However, you may use your instinct to screen such unsolicited messages/invitations and follow the ones you may be interested in. It's part of learning
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Hi there!
I work with infrared spectroscopy (NIR & FTIR) in the field of food science/food chemistry. I'm looking for collaborators with experience in chemometrics (particularly PLS-R & PLS-DA, but other discriminant methods such as SVM or neural networks would also be great). In particular, I'm after people who would be interested in helping with data analysis & writing up some papers based on data I have collected.
If you are interested & have such experience, please contact me & I would love to discuss with you.
Joel
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you can contact me and Dr Silvio David Rodriguez for possible collaborations.
Regards,
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Hello,
I have visited the journal of gastronomy and food science on the elsevier website to check their citation style for journal articles and they do not state the name of the style to use but they do provide an example:
Van der Geer, J., Hanraads, J.A.J., Lupton, R.A., 2010. The art of writing a scientific article. J. Sci. Commun. 163, 51–59. https://doi.org/10.1016/j.Sc.2010.00372.
I am using endnote to enter my references but can someone please tell me the name of this citation style if it's available?
Thank you!
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https://libguides.usc.edu.au/c.php?g=508771&p=3478887- Please have a look if any kind of support you need .
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Models focus on multidisciplinary aspects, b/se focusing on only one subject matter without giving due emphasis to the others is finally just a failure. Crop models avoid the bad culture of focusing on only one subject matter, called one-eyed subjects. In previous times, e.g. crop breeders often focus on improving the genetic makeup of the crop without seeing the farmer's problems, demand, capacity, etc., and also without due knowledge of the newly formed crop for disease resistance, fertilizer, environment, health (GM crops), sustainability and many other issues.
All the other fields (e.g. agronomy, entomology, climatology, weed, food science, soil science, etc.) were too one-eyed subjects.
Now thanks to modelers, we had models that included all-subjects-in-one. So the problem with regard to models is "they need huge data" on agronomy, climate, soil, breeding, etc.
In today's science due to MDGs and sustainability issues, any agricultural practice, technology, innovation, or else is said to be sustainable, if and only if (IFF) it is:
  • socially acceptable
  • economically feasible
  • environmentally friendly
  • ecologically sound
  • yielding reasonably
So, could we really apply these sophisticated models in poor countries? Could these beautiful models reduce our ugly fact (the acute poverty we are facing in Africa or elsewhere)? Is there a scale to measure the applicability of models for solving farmers' problems? Which should come first, models or farmers' problems?
My context is SSA (Africa South of Sahara)
  • What is crop modeling?
  • Are models theory or practice?
  • Could crop models feed the world?
  • How can we make the application of models a reality?
  • Why do we have so many beautiful models but heartbreaking and ugly facts (e.g. poverty, hunger, malnutrition, etc.)?
  • Is there a scale to measure model applicability (e.g. poverty reduction)?
Many thanks to all RG members and scientists for your valuable contributions!
Alem
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Crop models can assist in preseason and in-season management decisions on cultural practices, fertilization, irrigation, and pesticide use. Crop models can assist policy makers by predicting soil erosion, leaching of agrichemicals, effects of climatic change, and large-area yield forecasts.
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Dear all,
Do you know any free to publish Q1 or Q2 journals in microbiology/ microbiome science or food science which publish the articles open access (OA)?
Thank you
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Dear Prof.
Brazilian Journal of microbiology is a good opportunity
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I am looking for journals related to food science and technology, i completed experiment with macrophage cell and mice model using flavonoid.
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Check Scopus list and Web of Science
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Clarivate analytics journal ranking for food science needed. I can only find Scimago ranking. Thanks
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I hope that you find this journal suitable
CURRENT RESEARCH IN NUTRITION AND FOOD SCIENCE
ISSN / eISSN: 2347-467X / 2322-0007
Web of Science Core Collection: Emerging Sources Citation Index
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Hi everyone,
I'm trying to improve the solubility of butylated hydroxytoluene (BHT) in common vegetable oils (soybean/sunflower) in an liquid product to be used at 298 K. So far I've tried the following:
1) Formulate an emulsion (unstable in time and you need specialized equipment)
2) Reduce viscosity of the solvent by adding a cosolvent like a fatty acid (C18, no luck)
Knowing that the solvent has to be a food-grade oil, could you please suggest any ideas or recommendations to choose a suitable solvent for this application?
Thanks
Andres
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I took XRD of dried mango slices and want to calculate the crystallinity index according to the formula X_c=((Icrystalline - Iamorphous)/Icrystalline) ×100 Icrystalline will be the highest peak intensity around 18o but how to find for the amorphous region.
but how to find degree for the amorphous region?
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Crystallinity index is the ratio of the crystalline peaks to the crystalline+amorphous peaks. Amorphous peaks are the noise in XRD data, while, from crystalline+amorphous, we mean the whole XRD profile. In the following 17 min video, I have explained in detail the crystallinity index and how to calculate it from XRD data. In the first 2.5 min, I have first explained 'what is meant by the crystallinity index'. In the rest of the video, I have taught 'how to calculate the crystallinity index from XRD data in origin for crystalline as well as amorphous materials. If you need anything further to ask, let me know. I'll appreciate your feedback on the video tutorial. I have attached the discussed files (Origin file and Excel template) here, as well as, they can be accessed from the description in the video. Thanks
How to calculate crystallinity index from XRD data using origin
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I am struggling with my food science lab report, and although I completed the experiment I am still clueless about the Maillard reaction.
I have found a positive correlation between glucose concentration and absorbance and can’t understand why and what this actually means. Any help will be appreciated
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There will be more reducing sugars readily interact with amino acids and give rise to Maillard reaction products, which lead to progressive browning and aroma formation. https://www.sciencedirect.com/topics/agricultural-and-biological-sciences/reducing-sugars
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I determined the beta carotene content of tomato by UV spectrophotometry and I want to convert the result to vitamin A. Is there any factor for the conversion?
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Can you explain to me how may i convert total carotenoids from vegetable source to μgRE, please?
Many thanks!
I am happy if you can also send me your answers via dagemmame@yahoo.com
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Do you have any information legislation about mycotoxin limitation acceptance in food for human and animals.
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I'll be conducting my thesis in Japan soon and I want to know what is the best method to personally bring viable microorganisms (specifically Lactobacillus spp.) in-flight.
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I recommend
Girish Korekar
answer
best wishes
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I am looking for a list of closed access journals in food sciences field for publication (In order to publish my research papers without costs).
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exclude open access journals
selest ypour category - there are two of these for the food science
get a list(s)
read them - there are possibility to reach every of them in the new window
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I would like to run a simple experiment that consists of hydrolyzing pea protein using a store-bought mix of digestive enzymes. The objective is to improve the texture and smoothness of pea protein powder. I have found some research on bromelain and its potential for improving pea protein functionality, including taste and solubility for food applications. I don't have access to a lab and cannot measure hydrolyzed protein, enzyme activity, or functionality. My only evaluations would be sensory and visual. The composition of this supplement is the following:
  • Alpha-amylase (Aspergillus oryzae)5000 FCC DU (156 mg)
  • Lipase (Triacylglycerol lipase / lipase triacylglycérole
  • Rhizopus oryzae) 1000 FCC LU (58 mg)
  • Protease 4.5 / Protéase 4.5 (Aspergillus oryzae) 10000 FCC HUT (20 mg)
  • Alpha-galactosidase (Aspergillus niger) 260 FCC GalU (20 mg)
  • Stem bromelain / Broméline de tige (Ananas comosus, pineapple stem/tige d’ananas) 500000 FCC PU (17 mg)
  • Protease 6.0 / Protéase 6.0 (Aspergillus oryzae) 8000 FCC HUT (16 mg)
  • Cellulase (Trichoderma longibrachiatum) 275 FCC CU (4 mg)
The method would be very basic. I would just run a set of trials in which different amounts of the enzyme powder with a solution of powdered pea protein and let it sit at 40°C for 30 min to 3 hours.
I would really appreciate some help/advice on this. What are your thoughts?
I have also been trying to understand the label. For example, it indicates 500 000 FCC PU (16 mg) for the bromelain enzyme. The definition of a papain unit (PU) is:
"One papain unit is defined as that quantity of enzyme that liberates the equivalent of 1μg of tyrosine per hour under the conditions of the assay (pH 6.0 and 40°C)." (https://www.deerland.com/wp-content/uploads/2015/04/EnzymeAssayUnits_Deerland.pdf)
I find this definition confusing. Does that mean 500 000 μg of the enzyme liberates 1 μg of tyrosine per hour under these conditions? Is it in μmol instead?
Thank you for your help!
Raphael
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I see. Thank you for your response!
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How many days Journal of Critical Reviews in Food Science and Nutrition takes to publish
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2-3 months
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Milk-loving people, let’s discuss this video! I'm for sustainable agriculture and I agree that Remilk is revolutionary but there were points in this video that got me thinking:
1. “Milk is not healthy” is a broad presumption. Sure, there have been researches that were for and against consuming milk. But I consider milk as a healthy food since it contains proper amounts of dietary fats, proteins, vitamins, and minerals needed by the body. It is a reason why dietary guidelines (such as issued by the United States Department of Agriculture) recommends consuming three daily servings of low-fat/non-fat milk, yogurt, or cheese.
2. Alright, milk may be bad for consumers who can’t tolerate lactose. But how about in fermented milk products? During fermentation, microorganisms utilize lactose and produce lactic acid. I can think a lot about how lactic acid production is important in fermented milk products.
3. Milk has cholesterol but a cup of whole milk only contains 0.01% of cholesterol. How much more in low-fat or non-fat milk? Also, milk consumption increases HDL (high-density lipoproteins) cholesterol which transports excess cholesterol from the bloodstream to the liver for bile production. Bile serves as an emulsifier in the digestion of dietary lipids.
4. Indeed, milk is predominantly comprised of saturated fats. However, these saturated fats can be converted to unsaturated fats by microorganisms (e.g. lactic acid bacteria) during fermentation.
5. I can agree that milk is not entirely sustainable in the sense that the dairy industry greatly contributes to greenhouse gas (GHG) emissions compared to other agricultural practices. But we can’t ignore that there has been a significant reduction in GHG emissions throughout the years primarily by changes in breeding, nutrition, and management practices.
6. I honestly don’t know what to feel about animal abuse in the dairy industry. Does continually breeding dairy animals and leaving them in a lifelong cycle of reproduction and lactation might be considered animal abuse? (In my mind, it's a sad yes.)
7. Let’s say that the microbes have the same machinery as the cow’s mammary epithelial cells in producing milk, is it certain that they will have the same physicochemical composition, property, and functionality?
8. What are the external nutrient sources of the microbes? Is it the same nutrients found in the cow’s blood?
9. It is contradicting that they want to produce milk from microbes with the same chemical composition as cow’s milk but with no lactose?
This video discussed valid points that can be considered problems in the dairy industry. As long as this microbially-produced milk does not sacrifice the wonders of milk; Remilk, why not?
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I agree with you why not.
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I am searching for background information on Peruvian food culture from the perspective of ethnobotany and health and nutrition.
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For some reason this just popped up on my RG - Flor Henderson -..- I do not have much direct help, but will suggest some ethnobotanical work by James Duke of the USDA who did some work in the Peruvian Amazon with a shaman (I met them near the Napo River in the mid 90's. I have been wanting to find out more about the shaman as I did get some info I want to follow up on.
Regarding food, you may want to focus on one of the regions of Peru. The coastal ceviche is some of the best in Latin America. The Lacuma fruit is prized by many in the mountains. And the amazonian 'catfish' were wonderful for eating (my students did not know they were eating fish). One of my favorite desserts are Alfajores, but those I bought Saturday did not even make it to Sunday with my boys being here. Hope your work is going well!
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I am looking for available databases for a standardized list of SOPs. More specifically, I am looking for a standardized SOP for anthocyanin extraction from deepwater rice. This SOP must be for industrial use.
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for detection of the meat adulteration by PCR methods
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It depends on your Kit protocol
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I'd like to know what is high oxygen MAP?
And what kind of food use it to prolong it storing time?
Thank you!
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Generally, red meat with a high level of myoglobin is packaged in HiOx-MAP .
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How much raw materials are required for producing 1 kg of final products for each of the following?
1. Orange jam 2. Orange Jelly 3. Orange Marmalade 4. Tomato sauce 5. green Chilli Sauce 6. Tomato puree 7. Ginger paste 8. Canned pineapple
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Hi there sadhan
search the product you wish and it will give you its composition.
good luck
isaac
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Hi all,
In the determination of Antioxidant capacity of fruit samples, I used DPPH assay and have a few questions regarding the DPPH assay
1) why is it necessary to vortex and incubate in dark the sample and DPPH solution? Is it so the sample and the DPPH can mix and allow the redox reaction to take place?
2) Why must DPPH be mixed with methanol to form methanolic DPPH? What is the purpose of methanol?
3) How did the equation %Inhibition= [(A0-A1)/A0] × 100 come about? Why is it not using beer-lambert law of calibration curve instead?
Please help! Thank you(:
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Dear Natasha,
It is based on reduction of the violet DPPH radical by the antioxidant via a hydrogen atom transfer mechanism to cause a change in the color to stable pale yellow DPPH molecules in the dark. This test provides useful information on the antioxidant capacity to donate hydrogen atoms. On the reactions reducing capacity and on mechanism between the free radical and the antioxidant.
The standard DPPH assay uses methanol or ethanol as solvents, or buffered alcoholic solutions to keep the hydrophobic hydrazyl radical soluble while offering sufficient buffering capacity.
The Beer-Lambert law states that there is a linear relationship between the concentration and the absorbance of the solution, which enables the concentration of a solution to be calculated by measuring its absorbance. This will be evaluated by % inhibition.
Regards,
Divya Jain
India
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In the protocol for the extraction of anthocyanins from plant material, the first step is the sample preparation. The sample is prepared by converting the plant material into a powdered form after mixing it with liquid nitrogen. Is it necessary to mix the plant material with liquid nitrogen or can we proceed without liquid nitrogen to convert plant material into powdered form?
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The liquid N2 is to keep it cold, make it brittle, and exclude O2. The success otherwise depends on the properties of the particular material.
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Can anyone help me how to increase the shelf life of suji (sooji). What are the factors affecting shelf life of suji?
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Rava get insect infestation fast .Insect is Tribolium ...we can see eggs...larvae...pupae and adults in Rava...if not properly stored..Any cannot have freezing technology.
Traders ...you get rid of that at your point. A machine I developed recently to crush eggs etc and remove adults..
Soon coming to market.
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FTIR technology is considered the most advance for the detection of adulterants in milk. Is there any mathematical relation that can describe the relationship between the amount of adulterants in milk using the absorbance from the FTIR? Please suggest any research articles that describe this or related areas.
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Relation between milk with adulterants . Many times urea is added in the milk as adulterant to increase the density. If you is isolated then in FTIR it shows the absorption for NH2(V NH = 3200-3350 cm-1) and C=O) at (v 1700 cmi1).
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I want a sample preparation method for lowry & biuret method for protein quantification from curd, cheese, paneer that I prepared from ground nut milk. Kjeldahl apparatus is not present in working conditions, so is it possible to quantify protein content by biuret/folin-lowry method?
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Total protein content from groundnut milk products like curd, paneer, cheese etc.lowry & biuret method for protein determination is used.
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Micro porous starch was prepared from potato starch by alpha amylase catalysis combined with ultrasonic treatment. Twenty milliliters of starch slurries (40, 60, and 80% w/w) were treated with 0.05% v/v alpha amylase (enzyme activity >100 000 U/g), or a combination of 0.05% v/v alpha amylase with ultrasound at 100 W (20% power), 200 W (40% power), and 300 W (60% power) for 10, 30, and 50 min concurrently or sequentially.
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Dear Syahriar Nur,
In general, control sample must contain every substances in the same volume and same concentration except the one (which may be substrate or product) that we want to measure it. In stead of the substance (substrate or product) we have to add buffer solution at the same volume. In enzyme assay, although the enzyme is inactivated at high temperature, but its volume and its turbidity will change the total volume of control sample and consequently its absorbance.
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Hello everyone ! One of the most crucial concerns about food science is the expectation of development for GM foods,after this pandemic is over. Each opinion is respected and received.
Your help will be informative to this important aspect !
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Hello, I thank that the GM food advanced needs some time to be clearance because it is dependent on multi interaction factors with COVID-19.
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At both very high and very low water activities, lipid oxidation rates are high compared to the rate at intermediate water activities. What can explain this trend?
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The relationship between rates of lipid oxidation and moisture is complex. The amount of water, the water activity and the state of water in a food, along with other factors, must all be considered.
For most fresh or tissue foods that have moisture contents between 60 - 95% have a water activity very close to 1.T he mode of deterioration at this water activity is generally microbial or enzymatic in nature. Direct lipid oxidation (i.e. not enzyme-mediated) is not an important source of deterioration at this high water activity since other modes of degradation will deteriorate the food first.
Concentration, freezing, and drying are mechanisms by which the water activity of food can be reduced. Such processes may bring the food into the intermediate moisture or low-moisture region where direct lipid oxidation becomes a more important mode of degradation. Also, during dehydration, free radicals can be formed which accelerates lipid oxidation. Freezing can also lead to the acceleration of lipid oxidation rates through the concentration of substrates and catalysts in the unfrozen portion of the system.
On the other hand, Chou et al. (1973) found that water activity primarily affects matrix swelling and thus substrate/reaction site availability as well as catalyst mobility.
Hereinbelow the tow common theories related to the relationship between water activity/content and lipid oxidation are briefly discussed:
Monolayer theory
Unlike most aqueous chemical reactions, the rate of lipid oxidation that takes place in the oil phase is observed to increase as water activity is decreased below the monolayer (i.e. water molecules that are bound tightly to the food surface). This can be explained by considering the role of water in this reaction. It has been suggested that the monolayer of water—or rather, the water saturation of polar groups in lipids—is necessary to cover the surface of the lipid, preventing it from direct exposure to air. This monolayer is essentially “bound” water with limited mobility and is assumed to not participate in chemical reactions. Several studies have found that a variety of foods are most stable to lipid oxidation at a relative humidity or aw consistent with the monolayer.
On the other hand, water can form a hydration sphere around metal catalysts such as Cu, Fe, Co, and Cd. In the dry state, the metal catalysts are most active. As water activity increases, the metals may hydrate which may reduce their catalytic action thus slowing the rate of lipid oxidation.
This monolayer theory, however, cannot be applied universally.
Glass transition theory
According to the glass transition theory, one important function of water is its ability to act as a plasticizing agent. The plasticization of a matrix involves swelling of the polymer matrix when moisture is increased. The resulting increase in free volume might allow for faster diffusion of substrates in the aqueous phase which may lead to faster reaction rates. Plasticization may also increase the contact of the absorbed aqueous phase with the lipid phase. The number of catalytic sites increases such that the rate of lipid oxidation increases.
The above discussion shows that water plays both protective and prooxidative roles in lipid oxidation. In some foods at low aw near the monolayer moisture content, water is protective, presumably because it provides a barrier between the lipid and oxygen.
While the classic food stability map proposed by Labuza et al. (1972) shows lipid oxidation having a U-shaped relationship to aw, no U-shape was also observed; lipid oxidation actually slowed as aw increased as the case of freeze-dried food.
Overall, monolayer and glass transition concepts might not effectively predict lipid oxidation reactions in some foods if oxidation is primarily occurring in the lipid phase and thus would not be significantly impacted by water and the physical state of proteins and carbohydrates. On the other hand, water can play a major role in lipid oxidation chemistry if reactions are primarily promoted by water-soluble prooxidants such as metals. Unfortunately, the causes of lipid oxidation in low-moisture foods are poorly understood, which could be why measurements of water activity, monolayers, and glass transitions do not consistently predict lipid oxidation kinetics.
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I would like to know what the highest possible percentage of Protein content within a Green Pea that can be extracted by manufacturing grade equipment? I would appreciate any research paper that can explain this.
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For any solute extraction in a single stage solid-liquid maceration the extraction yield (extracted solute/total solute in solid) depend on solvent/solid ratio (R). The yield tends to one when R tends to infinite. That is, in a single stage solid-liquid maceration increasing R increase yield but the solute extract concentration decrease. At lower R (as example 1) extract concentration may reach saturation but the yield is poor. It is possible to increase yield and extract concentration simultaneously with counter-current multiple extraction stages. All of these concepts are detailed in the paper
Other alternative is a column with a fixed bed of solids with a continuous flow of solvent. In this last case the outlet extract at the beginning of process (when yield is poor) is concentrated (may be saturated), but its concentration decrease continuously with time and solvent consumption increase drastically (yield tends to 1 when time tends to infinite).
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Hello,
I would like inquire on the process of extraction of protein contents from the green pea by means of decantation. What I know is that a decantation is a separation process in which leaching and washing occurs with end result being protein isolate. It takes in milled pea powder, mixes it with water to form a solution, and then processes it to get separate nutrients. Specifically, I would like to inquire about which chemicals and the amount of those chemicals added in this pea solution that can effectively extract the protein content from a pea in the decanter.
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Thank you Professor Li and Professor Niamah, this is very helpful. The study from Dr. Talab that is posted is very detailed. However, how would it be possible to apply this in an industrial scale using machinery? Would a decanter work for centrifugal separation or are there varying machines? Also, would it be possible to get similar studies that have more metrics such as the volumes of solvent to solute?
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Rice is the seed of the grass species Oryza sativa (Asian rice) or Oryza glaberrima (African rice). As a cereal grain, it is the most widely consumed staple food for a large part of the world's human population, especially in Asia. It is the agricultural commodity with the third-highest worldwide production (rice, 741.5 million tonnes in 2014), after sugarcane (1.9 billion tonnes) and maize (1.0 billion tonnes).
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Hey Mohammed Shaker Hossain; After conducting all the necessary trials which involve Stage I, Stage II, Preliminary Yield, advanced Yield Trials, Multi-location trials for the target traits of interests, You need data on DUS which is Distinctness, Uniformity and Stability for this variety and it is supposed to be different from the existing varieties that have been released before. You can even go further to genotype it to develop it's fingerprint for reference in case you want to do a QC/QA.
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I have submitted a Review paper to the Journal "Critical Reviews in Food Science and Nutrition" in November 2019 and still status is under review. What should I have to do for now? I have to wait or I have to withdraw my paper from this journal?
Kindly give me direction to take a right decission.
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It is your choice , opting for a high ranked journal and wait or go for the easier way in a lower ranked one.
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Can being vegetarian affect peoples behaviour? It is only an observation but several people I have met,who are vegetarian, can appear to be less patient and more short tempered. This appears to apply even though the individuals are usually very pleasant. Is there something in meat, as in chocolate, which somehow enhances the mood of the individual? I state again that this is an observation and no offence is intended.
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Yes, it is possible
According to the old heritage in heritage books
A person who refrains from eating for forty days will be ill-mannered
31106.
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Muhammad ibn Yaqoub, on the authority of Ali bin Ibrahim, on the authority of his father, on the authority of Ibn Abi Omair, on the authority of Hisham bin Salem, on the authority of Abu Abdullah (peace be upon him), he said: Flesh grows flesh, and whoever leaves it for forty days worsens his creation, and whoever worsens his creation, they give permission in his ear.
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Adequate 6: 309 | 1, the advantages: 465 | 433.
940 and 941 AD
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Based on whiteness, nutrition quality, & low water content in dry product. The dryed chips will be milled into flour.
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I think sun drying is best for reducing the cyanide levels in the chips
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I am currently conducting a study about the formation of free EPA in raw oysters treated with acidic sauces. For separating the polar and nonpolar lipids, I will be using Sep-pak C18 catridges. However, I am still a student and buying a large amount of cartridges (50) is out of my budget. Can you recommend any alternatives for this method?
Any answer or literature will be much appreciated, thank you!
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Silicium (though you change the elution mechanism), or LH-20, which come in bulk so you can pour your own columns.
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Dear colleagues
Currently I`m developing a book project called Handbook of Research on Food Science, Production, and Engineering which is scheduled to be published by IGI Global and I`m looking for possible contributions regarding the topic.
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Hii I would like to contribute as well. Email Id: jincy.fpe@gmail.com
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I found the decrease in FFA (%oleic acid) content of fish mince after a certain period of days during frozen storage. What may be the probable reason? In paper, FFA increased with the increased in storage. Is there any paper that given about the decrease in FFA? Thank you
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I would suggest the need to have changes in microbiological total viable count (TVC) and specific spoilage organisms (SSO) and physiochemical characteristics properties (total lipid, peroxide value (PV), thiobarbituric acid reactive substance (TBARS), free fatty acids (FFA), pH, aW, and moisture content of samples analyzed along the storage period. This is because, the quality of fish products is a complex event that required multiple analysis to define its stability. This is imperative for prediction of its quality. Further to this, temperature profile for the storage area must be recorded. During analysis, samples must be kept at low temperature through out possibly in ice. This will help to prevent deviations in your results.
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How can I find about highly cited and hot paper by my affiliation of Nutrition and Food Sciences research center in Scopus site?
I should search and find the number of citation since 3 years ago for my affiliation!
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Dear Dr Fahim Shaltout
How can we do that? please explain how not reporting your abilities, thank you so much!
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I am currently proposing a study about the formation of free PUFAs (EPA and DHA) in raw oysters treated with acidic sauces. Based on a study by Sajiki et al. (1994), free PUFA formation may be caused by the activation of lipolytic enzyme in the oysters treated with acetic acid. However, I am confused regarding this mechanism since the oysters are not alive. Can this explanation be used for dead oysters? Is there a better explanation for the formation of free PUFAs?
Here is Sajiki's study if you are interested:
Any answer or literature will be appreciated, thank you!
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I agree with C.A. (Kees) Kan
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I cannot find any specific reference to restrictions on it use but there seems to be a number of suggestions of toxic effects especially with regard to the juice derived from the whole leaf as opposed the gel due to its high aloin content.
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Interesting question, following the answers
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At above-freezing temperatures, I know RVP is a function of temperature and food composition. However, it becomes dependent on temperature when its sub-freezing temperatures and the kind and ratio of solute no longer matters. How is this related to the water activity? Is it because the water freezes and the ions of the dissolved solute no longer disrupt the structure since they're immobilized as well?
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Dear Alexandra
1- The initial freezing point of food was estimated from the mole fractions of individual solutes in the aqueous phase such as ions, sugars, acids and alcohol.
2- Moreover, every kind of foodstuff had on your own component that is different with another varieties.
3- foods are full of Vitamins, minsrals, soluble and insoluble fiber withe diffrent vapor and freezing point temperature.
Every part of these component had specific freezing point.
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Does it have something to do with its ketone group or a different property? Please explain.
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Dear Alexxandra,
very good thinking. In aqueous solution, fructose is an open-chain to a small extent and is present predominantly as α- or β-fructopyranose, which partially merge by mutarotation. In crystalline form, fructose exists as a closed pyran ring (fructopyranose). The keto group which is only present in fructose's open chain form has now turned into an OH- group by nucleophilic substitution during ring formation. Therefore, the keto group doesn't play any role in incorporating water into fructose's crystalline structure. Crystals of fructose exist as either anhydrous β-d-fructopyranose or as the dihydrate or hemihydrate (one molecule of water of crystallization per two molecules) of β-d-fructopyranose. Dihydrate fructose crystals can dissolve in their own water of hydration and must therefore be handled very careful. By the way, the water of crystallisation is not chemically bound, but only weakly bound by hydrogen bonds (electrostatic forces) and may normally be removed by heating.
Wishing you best of success,
Johannes
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we are some NE region state gemplams we want maintain
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The conservation of field crop like maize will require a need based protective structure especially during rainy season with temperature and humidity control with special care of irrigation so as to protect the flowering and pollination.
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Use of Spirulina in baby foods.
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The answer to your question is "Yes"! Please see the following RG link.
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Dear Scientists,
We doing research  ''Was Obesity Prevalent in Ancient Egypt''? In a time with no machinery, no sedentary life ( pyramids took about 30 years to be  built,  and no famous fast food resturants). Also plenty of fruits and vegetables, and bread high in fiber.  We have got little evidence of the presence of obesity in ancient Egypt even the mummy of Hatshepsut that claimed to have  obesity and diabetes was not the queen's but  it was KV20 ( a foster mother that hired  for breast feeding to babies). I would like to share your knowledge and experience with references.
Thank you for sharing
Aly R Abdel-Moemin
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Interesting discussion. Following
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thank you
i am narges heidari.
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You must contact to the prof before admission application.
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Thank you very much Carole C Tranchant for the information. Yes, it's very difficult to find the credibility of a research conference. It's very unfortunate that some people try to make money from the research works. As newcomers to the research world, we are at the highest risk for such predatory conferences. Appreciating of your public awareness.
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Some People reproduced my Article earlier published in African Journal of Food Science in 2016, in International Journal of Agriculture and Food Security in July 2017. I had complained to the Publishers through their help desk but no reply from them. The Authors modified my topic, inserted their names and left the affiliation as my own and lifted the entire article without any change in the Article.
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Dear Paul,
The International Journal of Agriculture and Food Security is part of the publishing house Advanced Scholars Journals.
Unfortunately they are listed as predatory (see for the issue of predatory journals and publishers elsewhere here in Researchgate, just type predatory and you will find numerous examples of discussions on this topic).
So I’m afraid you are dealing with a journal (and behind that a publishing organisation) with questionable ethics and practices.
All I can think of is that you contact African Journal of Food Science, the journal where you published your original paper and asked them if they can do something in this matter.
PS. The publisher behind the journal you used, academicjournal.org is unfortunately mentioned in the famous (but not flawless) predatory list of Beall as well. However I feel that this publisher is making serious attempts to do the right thing and even discuss this issue themselves:
So I think it is worthwhile to contact them and see if they can resolve the problem for you.
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Hi,
I made very thin, flat, crispy waffles and im wondering.,,,
how do you measure texture changes of the waffles using texture analyzer, like loss of crispiness or rubbery texture, followed by contact with humidified air?
It's been stored in moist atmosphere for three days, and I'd like to evaluate how much crispiness they lose... Any suggestion please?
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I would use the force (resistance) to break, or the force to shear, or one puncture test and measure one or more of these parameters. A Warner-Bratzler can tell you the resistance do shear, and the other may be measured in a texture analyser or similar equipment. You may also try to measure the crispness, the sound produced by the break in hands or in mouth, but I guess these sensory measurements may be difficult becasue the wafles are very thin.
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Is there any newer and more efficient or accurate equipment for measuring the Brix and pH of grape berries than a digital refractometer (Brix) and a pH meter (pH)?
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Interesting. I think no other better method is available.
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I'm a food science student that likes to try out with different recipes from time to time. So I have made a really odd wine reduction + plain yogurt panna cotta that taste awfully odd (and super low pH). After leaving in fridge for about one week with cling film wrapped on, I have encountered this mold.
It is very visible and large compare to normal bread mold. At first it was a thinner and shorter layer, I can totally take if off without destroying the surface of the jelly. And it is surprisingly fibrous, when its flushed with water, it has very similar texture to a cotton. The picture I provided here is kinda after a few weeks after, and it has growth so much. You can clearly see the fibre after its wet and I cnt find it on any image sources. Thankyou.
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Your slide shows it to be Rhizopus (unless it is contaminated with other fungi).AS you are expecting a species identification: it is not possible to do so by just seeing the morphology.
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Suggest some best journals which offer speedy publication of research articles covering physio-chemical, sensory and antioxidant analysis of a developed food product. The journals should be impacted.
Thanks in anticipation
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you can choose the journal according to your work from the below links
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Exercise benefits for health are well known, but what if we're looking for the best way to fat loss, it's really exercise as important as most people think or is kinda overrated??
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Physical exercise is for the health care which by regular walking , swimming , & gyms for Yoga , & systematic breathing steps play an important part for our health care .
In case of person under a heavy weight or a person under a thin body & appearance may take the recourse for reducing over weight or an improvement in the weight for the thin body .
This is my personal opinion
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Anyone knows about research-related or industrial applications of CNN for HSI data in the food science field? Unlike SVM, KNN, and other "shallow" machine learning algorithms, the CNN enables taking advantages of the spatial information of HSI data.
Most published papers deal with extraction of deep spatial features for architecture classification and other domains. But in the literature, I don't find applications of this deep learning technique on food/agricultural products!
Thank you !
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Hi,
I found this paper that maybe related with your research
”"Variety Identification of Single Rice Seed Using Hyperspectral Imaging Combined with Convolutional Neural Network"
There are also several papers that discuss about plant disease recognition using HSI and CNN.
"Explaining hyperspectral imaging based plant disease identification: 3D CNN and saliency maps "
"Classifying Wheat Hyperspectral Pixels of Healthy Heads and Fusarium Head Blight Disease Using a Deep Neural Network in the Wild Field "
Hope it helps your research.
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I want to make some testing kit-like formalin for fruits, vegetables, fish, milk etc or carbide for fruits etc.
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Formaldehyde may be detected using the following reagents:
1. Phenylhydrazine hydrochloride + acidic hexacyanoferrete (III) (pink or purple color, color intensity is proportional to formaldehyde amount).
2. Phenylhydrazine hydrochloride +acidic Potassium hexacyanoferrete(III)(pink or purple color, color intensity is proportional to formaldehyde amount).
3. Almost same as previous, addition is impregnation of Silica gel.
4. 3-methyl-2-benzothiazolone hydrazone (MBTH) + acidic Iron (III) Chloride (Blue). [Note: highly acidic condition; pH <1.0; UV-vis 630nm]
5. Chromotropic acid (2,4-Dichlorophenoxyacetic acid) (chromotropic acid in 75% sulfuric acid reacts with formaldehyde; peaking at 580nm wavelength).
6. Chromotropic acid + Bisulfite solution.
7. Chromotropic acid + 1% Sodium bisulfite solution.
8. J-acid (6-amino-1-napthol-3-sulphonic acid; 7-Amino-4-hydroxy-2-naphthalenesulfonic Acid; CAS No. 87-02-5; Sigma: 08800 FLUKA) (University of Cambridge; PhD Thesis: A new J-acid method for the detection of formaldehyde; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.599295) .
9. Phenyl J-acid.
10. Mixture of dichlorosulfitomercurate (II) complex and acid bleached parasoaniline hydrochloride.
11. Formaldehyde + Mixture of dichlorosulfitomercurate (II) complex and acid bleached parasoaniline hydrochloride. (Schiff’s test?!)
12. 5,5-dimethyl 1,3-cyclohexanedione (Dimedone, Methone) (Sigma 38490 FLUKA).
13. 2-hydrazinobenzothiazole (along with 1% ferricyanide and 10% sodium hydroxide; deep blue colour in presence of formaldehyde) Sawicki and Hauser (1960).
14. 2-Hydroxycarbazole Reagent: Yellowish to Dark Blue colour
15. Nash/Hantzsch Reagent (2M ammonium acetate, 0.05M acetic acid, 0.02M acetylacetone): gives yellow colour; can be measured using spectrophotometer at 412nm
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We are trying to determine the physical characteristics of cooked idli.
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Tie Idli with a knot. Weigh it on weighing balance. Place a jar full of water on weighing balance. Tare the weight . Make idli float with help of knot (Insignificant volume ) . Measure the weight . by dividing these two weights you can get density of Idli very quickly
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I need to prepare juice from frozen fruits for pasteurization and plasma studies and its effect on nutritional attributes. I use juice extractor and then centrifuge the extract to have a clear juice. The problem is the value of juice electrical conductivity using my method (around 0.27 S/m) is much higher than what is reported in the literature ( 0.1 S/m). What extra step is required to reduce the electrical conductivity ?
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