甲壳质的特性及生理作用（The characteristics and physiological functions of chitin）.docVIP

下载本文档

3
0
约9.79千字
约 8页
2017-09-02 发布于河南
举报
版权申诉

甲壳质的特性及生理作用（The characteristics and physiological functions of chitin）.doc

1、有哪些信誉好的足球投注网站（book118）网站文档一经付费（服务费），不意味着购买了该文档的版权，仅供个人/单位学习、研究之用，不得用于商业用途，未经授权，严禁复制、发行、汇编、翻译或者网络传播等，侵权必究。。
2、本站所有内容均由合作方或网友上传，本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺！文档内容仅供研究参考，付费前请自行鉴别。如您付费，意味着您自己接受本站规则且自行承担风险，本站不退款、不进行额外附加服务；查看《如何避免下载的几个坑》。如果您已付费下载过本站文档，您可以点击这里二次下载。
3、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等，请点击“版权申诉”（推荐），也可以打举报电话：400-050-0827(电话支持时间：9:00-18:30)。
4、该文档为VIP文档，如果想要下载，成为VIP会员后，下载免费。
5、成为VIP后，下载本文档将扣除1次下载权益。下载后，不支持退款、换文档。如有疑问请联系我们。
6、成为VIP后，您将拥有八大权益，权益包括：VIP文档下载权益、阅读免打扰、文档格式转换、高级专利检索、专属身份标志、高级客服、多端互通、版权登记。
7、VIP文档为合作方或网友上传，每下载1次，网站将根据用户上传文档的质量评分、类型等，对文档贡献者给予高额补贴、流量扶持。如果你也想贡献VIP文档。上传文档

甲壳质的特性及生理作用（The characteristics and physiological functions of chitin）

甲壳质的特性及生理作用（The characteristics and physiological functions of chitin） What is chitin? Chitin (chitin) also called chitin. It is a substance in the outer shell of insects and crustaceans. It not only exists in the crab and shrimp shell, and mushrooms, fungus, algae, shellfish, animal software (such as squid, cuttlefish) software and animal skins, arthropods (insects) and cell wall of fungi also widely exists in. The crab after a series of acid-base reaction, can get chitin (Ji Dingzhi) and chitosan (chitosan) mixture. But the complete separation of these two substances in the production process is very difficult, so generally and become chitin. Chitin is a kind of edible animal cellulose, the study found that in recent years, cellulose has special function and status can not be replaced in nutrition, mainly has the following five functions: 1. keep the bowels clear and reduce the absorption of harmful substances in the intestine 2. inhibit the development of intestinal cancer 3. beneficial cardiovascular system 4., to lose weight effect 5. maintain intestinal ecology Because it has such an important role in the international academic meeting on 1991, the United States and Europe and many other countries scientists to parallel with the protein, fat and carbohydrate, vitamins, minerals, known as the sixth major elements of human life. Chitin mainly has the following properties: 1) soluble in acidic solutions to form positively charged cationic groups. Pure chitosan is a crystalline powder whose basic composition is glucosamine, which is alkaline and reacts with acids to form salts. In this way, a positively charged cation is formed, and the entire chitosan molecule dissolves in the acid and forms a positively charged cationic group. This is only present in the universe are positively charged cationic food fiber, pharmacological effects on some aspects and negatively charged anion fiber food is completely different, for example, can reduce blood pressure, and other foo