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33
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Introduction
Iman Katouzian currently works at the Department of Food Process Engineering, Gorgan University of Agricultural Sciences and Natural Resources. Iman does research in Food science and Chemical Engineering. Their current project is 'nanoencapsulation of food bioactive compounds'.
Publications
Publications (33)
In this study, the composition of amino acids, nutritional characteristics, degree of hydrolysis (DH), antioxidant properties, and antibacterial activity of proteins and hydrolysates of bellflower ( Campanula latifolia ), Persian willow ( Salix aegyptiaca ), and bitter orange ( Citrus aurantium L.) were investigated under the influence of different...
Nowadays, the use of lipid-based nanocarriers for the targeted and controlled delivery of a variety of hydrophobic and hydrophilic bioactive-compounds and drugs has increased significantly. However, challenges such as thermodynamic instability, oxidation, and degradation of lipid membranes, as well as the unintended release of loaded compounds, hav...
Saffron is the commercial name of the dried stigmas of Crocus sativus flower, commonly known as the “saffron crocus.” The colorful crimson stigma and styles (called threads) are collected and dried for use, generally as an aromatic seasoning and coloring agent in food. The main ingredients of saffron include crocin, safranal, picrocrocin, and croce...
Liposomes are microscale lipid bilayer vesicles, widely employed for solubilizing drugs and delivering them to the body with precise targeting and controlled release. The nanoscale version of liposomes is known as nanoliposome. These biocompatible and biodegradable drug delivery systems have several advantages, such as the ability to be loaded with...
There has been a growing tendency towards the development of healthier and more nutritious foods in this day and age. Correspondingly, these foods, frequently designated “functional,” contain bioactive ingredients, and interestingly, some agricultural and industrial residues have proven to be prominent choices for the production of bioactive compou...
Background
Nucleic acid aptamers, defined as small functional nucleic acids that can selectively bind to a specific target, have become one of the main bio-recognition elements in biosensing. Aptamers can selectively bind to specific targets, such as proteins, peptides, small organic molecules as well as metal ions in food samples.
Scope and appro...
: The last generation of Coronavirus named COVID-19 is responsible for the recent worldwide outbreak. Concerning the widespread and quick predominance, there is a critical requirement for designing appropriate vaccines to surmount this grave problem. Correspondingly, in this revision, COVID-19 vaccines (which are being developed until March 29th, 2...
Considerable amount of research is going on the role of plant species that exhibit anti-cancer properties. One such plant species is turmeric, which has been used in the human diet for centuries. The main active component/polyphenol in turmeric is curcumin. Recently, curcumin has been considered for cancer therapy. The initial challenge with curcum...
Olive leaf extract (OLE) as a rich source of phenolics has numerous health benefits for application in food formulations, nonetheless, it has limitations such as unfavorable sensory attributes, low stability and bioavailability. Correspondingly, in this work, OLE was loaded into reassembled casein micelles (r-CM) as natural nanocarriers. Based on R...
Catechins are polyphenolic compounds which abundantly occur in the plants, especially tea leaves. They are widely used in nutraceutical and pharmaceutical formulations due to their capability of lowering the risk of developing various diseases. Nevertheless, low stability, loss of antioxidant and antimicrobial activities hinder the direct applicati...
Nowadays, the application of nano/microencapsulated natural bioactives in food products has been an ever-growing platform in the realm of encapsulation strategy. Indeed, the forerunners in the food industry are grappling with the development of label-friendly food products, which are formulated by nature-inspired food components and can endow healt...
Herbal bioactive compounds have captured pronounced attention considering their health-promoting effects as well as their functional properties. In this study, the binding mechanism between milk protein bovine β-lactoglobulin (β-LG), oleuropein (OLE) and safranal (SAF) found in olive leaf extract and saffron, respectively via spectroscopic and in s...
Nanoliposomes are among the most important lipid-based nanocarriers for both hydrophilic and hydrophobic bioactives. In this study, saffron-loaded nanoliposomes were produced by evaluating the influence of lecithin (0.5, 1.0, 1.5% w/w), saffron extract (0.15, 0.33, 0.50% w/w), and sunflower oil (25, 30, 35% w/w) on encapsulation efficiency, creamin...
Oleuropein (OLE) is the major phenolic compound of olive leaves, known for its numerous health benefits. α-lactalbumin (ALA) is a milk protein constituting almost 20% of whey proteins with a high nutritional value owing to its essential amino acids. In this study, binding properties of OLE to ALA was explored by fourier transform infrared (FTIR) sp...
Application of food proteins as a tool to form nanostructures (especially nanotubular shapes)has been an interesting topic for both the food and pharmaceutical sectors. Organic and protein nanostructures have better biocompatibility and biodegradability compared to inorganic counterparts like carbon nanotubes; in addition, they can undergo surface...
Olive leaf extract is a rich source of phenolic compounds and oleuropein which is well-known regarding its antioxidant and antimicrobial attributes. However, the mentioned phenolic compounds will lose their beneficial properties during storage and induce undesirable aftertaste in food products. In this study, olive leaf extract-bearing nanoliposome...
Lipid nanoparticles are innovative delivery systems, which are similar to the prevalently used emulsions, with the differences in size and structure in which the water-insoluble core is dispersed in a combination of solid and liquid lipids stabilized by surfactants. Solid lipid nanoparticles (SLNs) plus nanostructured lipid carriers (NLCs) are nove...
Corrosion process in metallic cans is one of the most significant issues, which is of utmost importance in food packaging; meanwhile, it can be studied through both economical and hygienic aspects. Designing a method to determine this process in an acidic food like tomato paste might be a good standard to monitor this phenomenon in food products. A...
Nanotechnology has revolutionized almost all the fields of science and technology, particularly the food packaging industry. Accordingly, some nanoparticles can be used in food contact materials to preserve food products for longer periods. To date, many inorganic and metal nanoparticles have been implemented to synthesize active food packaging mat...
Electrospraying is a novel technique being applied in the area of food and nutraceuticals, which improves the overall quality of food products, as well as, providing health benefits for the consumers. This technique is also employed in food packaging industry so as to prevent food spoilage by applying active ingredients and edible coatings. It is a...
Nowadays, nanotechnology is being widely implemented in the food and nutraceutical industries; however it is not yet clear the direct or indirect impacts of nanocapsules on public health and their possible role in altering the normal physiological reactions. The field of nanoparticle toxicology determines the risk of nanomaterials and nanocapsules...
Controlled release is defined as the delivery of bioactvies in response to stimulant or
time, represented by the European Directive (3AQ19a). In order to make this process
possible, carriers should be engineered for the gradual release of a nutrient and to pro
vide exclusive benefits. A targeted delivery system can be natural or engineered lead
ing...
Questions
Questions (32)
Good day,
I want to use the Folin-Ciocalteu method to determine the total phenol content of Ginkgo biloba extract, however, I am not sure at which wavelength I should measure the absorption rate of the extract to determine the total phenol content. Regarding the HPLC method, there are studies, nevertheless, I could not find literature to measure the phenol content by UV-spectroscopy (absorption wavelength) using Folin-Ciocalteu reagent, I would appreciate it if someone could help me with this issue.
Many thanks
Good day,
I have run FTIR test for my nanoliposomes and as I send it to a journal one of my reviewers asked me the question below (the picture is attached).
Did you subtract the background? How?
I did not understand this meaning of this question. Can someone help me clarify this question?
Thanks
Good day,
I have a Raman spectra for 4 samples including Graphene oxide (GO) and its nanocomposites. According to the attached figure can sb tell me whether the different peak positions of the four samples are attributed to the uncertainty or the peak shift?
Thanks.
Good day,
I have recently downloaded the latest dssp version and with the mkdssp executable file as I type chmod +x dssp and run this code :
gmx do_dssp -f final.xtc -s md.tpr -n index.ndx -o ss.xpm -sc scount.xvg -tu ns
the process starts but no output is created after even 1 day !!!!
my Gormacs version is 2019.3 and even earlier versions of dssp does not work and give me the same result. Till now I have tested this process on 3 computers having GROMACS 2019.3 on them.
Can someone help me with this issue?
Many thanks.
Good day,
I have synthesized a composite comprising Active carbon-graphene oxide-zero valent iron oxide. in the attached micrograph, the active carbon has an ordered-rectangular shape in the nanocomposite. Can somebody help me with this that why this morphology has formed, after the formation of iron nanoparticles in the nanocomposite?
Thanks
Good day,
I have downloaded the latest version of DSSP from the site : https://swift.cmbi.umcn.nl/gv/dssp/ however as I downloaded and extract the package I see it is named hssp 1.3.4 and the codes are different from dssp that determines the secondary structures in gromacs using gmx do_dssp!
can somebody help me on this issue and send me the latest version of DSSP for gromacs 2019 so that I can make it executable and do my task.
Many thanks
Good day,
How can I calculate Young and shear modulus using GROMACS package?
Thanks.
Good day,
I am running a simulation of Sc2CF2 in order to obtain the band structure using the VASP package however I encounter this error:
ZBRENT: fatal error in bracketing
please rerun with smaller EDIFF, or copy CONTCAR
to POSCAR and continue
and even I try this for some times I face this error again.
The POSCAR file is attached that I think the problem is related to my POSCAR file.
Many thanks.
Hello,
I wonder if someone has the atomtypes and bonds of toluene solvent prepared for GROMACS so that I can add it to the amnioacids.rtp file as I need it for part of my MD simulations or that someone can guide me if there is a link which I can download the text file of this solvent to include it in my GROMACS solvents.
Thanks
Good day.
I got a .cif file from a supplementary file in a paper, related to cellulose molecule which I want to use in my simulations. I run this code to change the format to pdb file for input of pdb2gmx code -----> babel -icif ncellulose.cif -opdb ncelluose.pdb
However after getting the pdbfile and running pdb2gmx -f ncellulose.pdb I get error :
Error in user input:
Invalid command-line options
In command-line option -f
File 'ncellulose.pdb' does not exist or is not accessible.
The file could not be opened.
Reason: No such file or directory
(call to fopen() returned error code 2)
I also checked the online Automated Topology Builder (ATB) and Repository and again the topology file cannot be built and it says that the file is invalid.
Can somebody help on this issue I want to use this cellulose file for my simulations.
Please find attached the .cif and converted pdb files.
Thanks.
