Binomium Chitin-Chitinase: Recent Issues by Salvatore Musumeci, Maurizio G. Paoletti

By Salvatore Musumeci, Maurizio G. Paoletti

This ebook deals a suite of articles on binomial chitin/chitinase from authors who've all in my opinion contributed to the improvement and elevated acknowledgement of this subject. The ebook will represents a milestone for destiny researchers via taking into consideration the recognized archaic functionality of chitinases and the recent description of chitin and chitinases roles in innate immunity. This lately came upon position has most probably been important within the strategy of genetic choice.

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Those from shrimp shell and squid pen show the same degree of digestibility by lysozyme in spite of a difference in the crystal structure of the original chitins. The crystal structure of chitin and the degree of N-acetyl group aggregation affect the enzymatic digestibility of chitins and deacetylated chitins. Bacterial chitinases play a role in the digestion of chitin for utilization as a carbon and energy source and recycling chitin in nature (Bhattacharya et al. 2007): for example, the intestinal bacteria Vibrio scophthalmi, ichthyonenteri and fischeri harboured in the Japanese flounder Paralichtys olivaceus can digest chitin, but V.

Minagawa T, Okamura Y, Shigemasa Y, Minami S, Okamoto Y. Effects of molecular weight and deacetylation degree of chitin/chitosan on wound healing. Carbohydrate Polymers. 2007; 67: 640-644. Minke R, Blackwell J. The structure of alpha chitin. Journal of Molecular Biology. 1978; 120: 167-181. Miserez A, Li YL, Waite JH, Zok F. Jumbo squid beaks: Inspiration for design of robust organic composites. Acta Biomaterialia. 2007; 3: 139-149. Morin A, Dufresne A. Nanocomposites of chitin whiskers from Riftia tubes and poly(caprolactone).

The total glucosamine content in mushroom stalks increased from 7% dry weight at harvest to 11% and 19% after 15 days of storage at 4°C and 5 days of storage at 25°C, respectively. The yield of crude chitin isolated from stalks stored at 25°C for 5 days was 27% dry weight and consisted of 46% glucosamine and 21% neutral polysaccharides associated to chitin. 88 (Wu et al. 2004). The chitin contents of pileus and stipes of fruit bodies of common varieties of the cultivated mushrooms A. bisporus, Pleurotus ostreatus and Lentinula edodes from Hungarian and German large-scale farming activities were determined and compared.

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