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首页> 外文期刊>Journal of Applied Polymer Science >Valorization of chitins extracted from North Morocco shrimps: Comparison of chitin reactivity and characteristics
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Valorization of chitins extracted from North Morocco shrimps: Comparison of chitin reactivity and characteristics

机译：北摩洛哥虾提取的龟丝的估值：几丁质反应性和特征的比较

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摘要

Huge quantities of waste discharged by the gray and pink shrimp decortication units in the North of Morocco can be valorized by producing about 950 tons of pure chitin, which can be transformed into 700 tons of highly to totally deacetylated chitosan. During the preparation of chitin and chitosan from gray and pink shrimps, differences in reaction behavior were observed even though these are taxonomically close species. The presented results concern several chitinous sources, and they show that the progress in the N-deacetylation reactions of chitin would be linked to the crystallinity index of the starting chitin. Following the kinetic study of the polymer hydrolysis during N-deacetylation, the difference in the molecular weights of the chitosan samples obtained under identical reaction conditions was related to the differences between molecular weights of the native chitin, 478 000 g.mol(-1) for pink shrimp and 562 000 for gray shrimp. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47804.
机译：摩洛哥北部的灰色和粉红色虾脱落装置排放的巨大废物可以通过生产约950吨纯丁蛋白来储存，这可以转化为700吨至完全脱乙酰壳聚糖。在从灰色和粉红色虾的丁蛋白和壳聚糖制备期间，即使这些是分类学闭合物种，也观察到反应行为的差异。呈现的结果涉及几种肾小序源，并且他们表明邻丁蛋白的N-脱乙酰化反应的进展将与起始甲壳素的结晶性指数相关联。在N-脱乙酰化期间聚合物水解的动力学研究之后，在相同的反应条件下获得的壳聚糖样品的分子量的差异与天然甲壳素的分子量之间的差异有关，478000g.mol（-1）粉红色虾和562 000用于灰虾。 （c）2019 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2019,136,47804。

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