果胶酸（pectic acid）是组成果胶质的物质成分之一，是以钙盐或镁盐的形态构成细胞壁中胶层的主要成分。
果胶物质分成原生质果胶，果胶和果胶酸。
The pectic substances can be classed protopectins, pectins and pectin acids.
近年来又发现了果胶酸裂解酶还可用于植物病毒的纯化、纸浆漂白和以纺织品的生物精炼等。
It was also found recently that the pectate lyase could be used for the purification of plant virus, bleaching of paper pulp and the bio-refining of textiles etc.
吃完柿子记得刷牙漱口，以免柿子中的单宁酸、果胶和糖分，侵蚀牙齿。
Gargle and clean your teeth after eating persimmon lest the tannic acid, pectin and sugar damage your teeth.
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