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Nutritional Biology - Science topic

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Food matrix refer to other components in the food that could synergic effect with macronutrient or micronutrient in food. One review had shown that whole milk had more effect than low fat milk or iso-milk protein for muscle protein synthesis regardless of reach to leucine threshold after exercise. This effect was without reaching to leucine threshold, due to exist of food matrix in whole milk. So I would like to plan this discuss about coffee component. The one of component in coffee that very application in exercise is caffeine and many research discussed about of different dose of caffeine for effectiveness during exercise. But many researches used the caffeine individually and in form of supplement (for example: pills, gum, and etc). Now I want to express this issue, does all of coffee component with together had more synergic effect than individually form of each component? Does synergic effect of coffee component more important than quantities of each components in individually form? For example maybe food matrix of coffee for effectiveness of caffeine more important than dose of caffeine? What’s your idea about food matrix for exercise performance?
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Thank you, Henry Wolfe for the excellent references. So many ways to improve performance and recovery inexpensively. Too many products developed for the bottom line, not necessarily the the elite athlete or the regular exercise Joe.
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The methods for determination of glycemic index of foods, which measure the glucose levels released after consumption of foods, are in vivo methods that require use of human subjects. It is often a challenge to find volunteers for the exercise.
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Hi,
glycemic index of food is measure of glycose in blood after eating food. There is no posibility to measure in vitro. Metabolism of glucose is different in every person, and the easiest way to determine disorder.
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I recently have taken gastrointestinal nutrition and biology and i want to know how they make fortified foods and the reason for this negative method in addressing the lack of nutrient availability. 
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I think the GMO's are fine as long as there is no tangible evidence showing their bad effects. The bad thing that came with it was the idea of developing"terminator seeds or sterile seeds", seeds that give only one generation of yield and that cannot be planted again. Certain companies wanted to patent such seeds and this wanted all farmers to buy seeds every year, but cannot save any seeds. This was as no body could not be sure of what will happen to the land races. There started condemnation of GMOs. I feel it was abused and some group(s) might wanted to benefit a lot. 
There is now so many crops that are GMOs. For instance over 90% of Soybeans (Glycine max) varieties in the US are GMOs. There is no reported problem associated to their consumption. People in Africa and Asia need more foods to survive. We need to produce more foods with all the potentials we have. Technically GM is one option we have to improve crop yields and increase target nutrients like proteins, minerals and vitamins. We need to use the same to increase the levels of functional nutrients like Plant polyphenols and other phytochemicals to meet the health demand of the population in developed world too.
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my sample is a fruit sample
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see the following link and the cross-references:
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How can we make zein protein isolate soluble in beverages in order to improve protein content of beverage?
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If the problem is on solubility, try to use hydrocolloids. However, you do need optimization. Take care.
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I am in the process of estimation of nutritional value of some rice land races from Indica rice (Oryza Sativa L.) grain. I found HPLC method and Titrimetric methods for Vitamin B Complex analysis. But I want to know if there are any available protocols and methods for estimation of Vitamin B Complex (separately B1,B2,B3&B6).
Thank you!
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Dear colleague,
I hope below files  was useful for you
J Assoc Off Anal Chem. 1985 Jan-Feb;68(1):83-5.
J AOAC Int. 2008 Sep-Oct;91(5):1059-69.
J Assoc Off Anal Chem. 1983 Jan;66(1):158-60.
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Is there any evidence at all for probiotic use in the management of gastroparesis?
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Thankyou so much for this help. I shall work my way through the articles.
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I am particularly interested in controlled experiments where 15N is measured and papers that review the 15N enrichment across trophic levels. I have a cool study in mind and want to make sure I cite all relevant studies. Cheers-
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You may know or have read them already, but Stéphane Caut's recent-ish papers on fractionation or discrimination factors and diet quality might be of interest (2009 Journal of Applied Ecology; 2008 Functional Ecology; 2010 Journal of Applied Ecology; etc.)
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In one of my experiment,  I am observing that the animals (Balb/c mice) feeding on high-fat diet are having goosebumps along with a increase in their body weights as compared to control diet-fed animals. What could be the possible reason for it?
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Dr Blum, Dr Springer, Dr Clemens..Thank you so much for your invaluable responses.
These days, the mice are not showing as much piloerection as they were showing previously. I think the mice have now been adapted to high fat diet.
Dr Clemens, Please see the following answers to your queries.
It was appeared after about one week of putting them on high-fat diet.
The mice were 8-9 weeks old at that time.
They are kept in groups.
They have nesting material.
Housing is changed almost weekly.
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I am looking for research on nutritional absorption in the GI tract and how this may interact with chronic illnesses such as IBD or autoimmune disorders. Specifically if there are any engineering models of nutritional absorption or any data sets that could use some engineering analysis. 
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See this paper:
Gretchen J. Mahler, Mandy B. Esch, Elad Tako, Teresa L. Southard, Shivaun D. Archer, Raymond P. Glahn and Michael L. Shuler. Oral exposure to polystyrene nanoparticles affects iron absorption. Nature Nanotechnology (2012). 12;7(4):264-71. doi:10.1038/nnano.2012.3.
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Magnesium has a laxative effect which helps to retain water in the colon.
How does this work?
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There is a significant correlation between stool PGE2 excretion and stool water consistent with a causative relationship. However, the concentration of stool prostaglandin is lower than the concentration found to alter intestinal electrolyte transport in vitro. In summary, the laxative effect of Mg(OH)2 is associated with increased output of stool PGE2. The contribution of the stool PGE2 to the laxative effect of Mg(OH)2 is unknown.
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Through agronomical, cultural, physiological, genetical or molecular approaches?
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hi,
1. Application of Organic manures is most important way to enhance micro nutrient content in any crop.
2. Application of ZnSo4 and FeSo4
3. through biofortification (adding ZnSo4 and FeSo4 while composting)
4. Through addition of biofertilizers like Azospirillum and VAM helps in uptake of nutirents particularly Zn and application of PSB not only helpful in uptake of Phosphorus and also helpful in uptake of Fe through siderophors.
Thank you
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I currently live in Thailand, Bangkok and my colleague is planning to check gastric emptying in conscious rats with the method of Noninvasive Breath Testing Using 13C-Acetic Acid (as mentioned in the attached paper called "Simple and Noninvasive Breath Test Using 13C-Acetic Acid to Evaluate Gastric Emptying in Conscious Rats and Its Validation by Metoclopramide".
In the Breath-test system, she needs to buy the infrared spectrometer (UBiT-IR300) and automatic sampler (UBiT-AS10) from Otsuka Electronics, Co., Ltd. Osaka, Japan. She already wrote several e-mails to the company but still there is no reply, and she can not find the branch of the Otsuka Electronics company or distributors in Thailand. Can anyone give me any suggestion or tell me of where to contact?
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