Author
Maher Z. Elsabee
Other affiliations: Carnegie Mellon University
Bio: Maher Z. Elsabee is an academic researcher from Cairo University. The author has contributed to research in topics: Copolymer & Chitosan. The author has an hindex of 25, co-authored 102 publications receiving 3901 citations. Previous affiliations of Maher Z. Elsabee include Carnegie Mellon University.
Topics: Copolymer, Chitosan, Radical polymerization, Monomer, Grafting
Papers published on a yearly basis
Papers
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TL;DR: This review discusses the application of chitosan and its blends with other natural polymers such as starch and other ingredients for example essential oils, and clay in the field of edible films for food protection.
886 citations
TL;DR: Chitin from squid pens did not require steeping in sodium hydroxide solution and showed much higher reactivity towards deacetylation in the autoclave that even after 15 min of heating a degree of deacetyation of 90% was achieved.
529 citations
TL;DR: In this paper, the authors extracted chitin in the α and the β forms from different marine crustacean from the Arabian Gulf, and the contents of the various exoskeletons have been analyzed and the percent of the inorganic salt (including the various elements present), protein and the chitins was determined.
501 citations
TL;DR: Several polymer blends of chitin/chitosan with many commercial polymers were found to be amenable for electrospinning producing uniform beads free fibers.
283 citations
TL;DR: In the current review, the advancements made in the last 5-7 years in the field of chitosan film technology for its application in the food industry are summarized.
267 citations
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TL;DR: Chitin is the second most important natural polymer in the world as mentioned in this paper, and the main sources of chitin are two marine crustaceans, shrimp and crabs, which are used for food, cosmetics, biomedical and pharmaceutical applications.
6,365 citations
TL;DR: The paper reviews the current trend of investigation on antimicrobial activities of chitosan and its mode of action and different physical states are comparatively discussed.
2,260 citations
TL;DR: Three possible and accepted antimicrobial mechanisms for chitosan are presented and the activity dependence on polymeric molecular weight and degree of acetylation are described.
Abstract: Chitosan, a versatile hydrophilic polysaccharide derived from chitin, has a broad antimicrobial spectrum to which gram-negative, gram-positive bacteria and fungi are highly susceptible. In the current review, three possible and accepted antimicrobial mechanisms for chitosan are presented and briefly discussed. The activity dependence on polymeric molecular weight (MW) and degree of acetylation (DA) are described. The chitosan minimum inhibitory concentrations (MIC) are summarized according to recent data found in the literature. The potential to improve inhibitory growth of bacteria by using water soluble chitosan derivatives is also discussed. The data indicate that the effectiveness of chitosan varies and is dependent on species of target microorganisms.
1,048 citations
TL;DR: This review discusses the application of chitosan and its blends with other natural polymers such as starch and other ingredients for example essential oils, and clay in the field of edible films for food protection.
886 citations
TL;DR: The main polysaccharides currently used in the biomedical and pharmaceutical domains are chitin and its derivative chitosan, hyaluronan, and alginates.
Abstract: This review concerns the applications of some polysaccharides in the domain of biomaterials and bioactive polymers. Natural polysaccharides from different sources have been studied for a long time, and their main properties are summarized in this paper; some of their derivatives obtained by chemical modification are also described. The main polysaccharides currently used in the biomedical and pharmaceutical domains are chitin and its derivative chitosan, hyaluronan and alginates. Alginates are well known for their property of forming a physical gel in the presence of divalent counterions (Ca, Ba, Sr) whereas carrageenans form a thermoreversible gel; these seaweed polysaccharides are mainly used to encapsulate different materials (cells, bacteria, fungi). Other promising systems are the electrostatic complexes formed when an anionic polysaccharide is mixed with a cationic polysaccharide (e.g. alginate/chitosan or hyaluronan/chitosan). An important development of the applications of polysaccharides can be predicted for the next few years in relation to their intrinsic properties such as biocompatibility and biodegradability in the human body for some of them; they are also renewable and have interesting physical properties (film-forming, gelling and thickening properties). In addition, they are easily processed in different forms such as beads, films, capsules and fibres. Copyright © 2007 Society of Chemical Industry
866 citations