植物单宁对微生物的抑制作用及其机制

通过植物单宁对植物病原和非病原物的作用机制的综述,单宁对微生物的抑制作用主要是因为单宁能与主要蛋白质如酶等形成氢键作用;其中单宁聚合体的分子大小是决定单宁对微生物毒性的重要因子,因为低聚体的体积足够以蛋白质形成氢键,又能够插入微生物的敏感部位,所以,低聚体对微生物有最强的抑制作用,而在实践中单宁的毒性是动态过程,单体的聚合作用也可以产生毒性,而低聚体的聚合使得单宁的毒性反而降低。

Antimicrobial Activity of Tannic Compounds

The view that tannic compounds have the main function against the microbes including plant pathogenic microbes and non pathogenic microbes,The important factors that influence that ability of tannic compounds to microor-ganisms is the tannin polymer size.In practice,the toxicity of tannins is always dynamic.The tannin monomers polymer-ization can improve the toxification,while the tannin oligomers polymerization can lead to the detoxification.