Pectins are demonstratet by staining with ruthenium red.

可以用钌红来鉴定果胶。

The pectic substances can be classed protopectins, pectins and pectin acids.

果胶物质分成原生质果胶，果胶和果胶酸。

Pectins are composed of a galactose derivative, chitin of a glucose derivative.

果胶是由半乳糖变异体和葡萄糖变异体角素构成。

Pectins we need maily depend on importation, which increases production cost and resource dependance.

我国各行业所需果胶基本上依靠进口，增加了生产成本和资源依赖性。

A monosaccharide, CH2OH (CHOH) 4cho, commonly occurring in lactose and in certain pectins, gums, and mucilages.

半乳糖一种单糖，CH2OH (CHOH) 4cho，一般产生于乳糖及特定的果酸、树胶及胶质物中。

The comprehensive utilization of pectins, volatile materials and various glucosides of citrus peels were recommended emphatically.

着重介绍了柑桔果皮中果胶、发性物质及各种配糖体的综合开发利用。