从啤酒酵母的凝集特性、作用机理及主要影响因素，分析了啤酒酵母凝集性对啤酒生产工艺过程及啤酒质量的影响，介绍了啤酒酵母凝集性的测定方法。
According to the characteristics, mechanism and the effect factors of beer yeast flocculation, the effects of beer yeast flocculation on beer technological process and beer quality are analyzed.
菜豆凝集素(PHA)是一种能使动物红细胞凝集的蛋白质，是菜豆引起食物中毒主要的致毒物。
The hemagglutinin in kidney bean (PHA) is one kind of protein which can agglutinate animal's erythrocyte.
目前已知的防御化合物主要包括植物次生代谢物质、昆虫消化酶(蛋白)抑制剂、蛋白酶、凝集素、氨基酸脱氨酶和氧化酶。
Major known defense chemicals include plant secondary metabolites, protein inhibitors of insect digestive enzymes, proteases, lectins, amino acid deaminases and oxidases.
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