Method for extracting tea polysaccharide from tailings with tea polyphenols being extracted

Abstract

A process for extracting tea polyase from the leftover generated by extracting tea polyphenol includes extracting toxic theocin and most of protein by chloroform and drying. Its advantage is high extracting rate (40% or more).

Description

technical field [0001] The invention relates to a method for extracting tea polysaccharides from leftovers of extracted tea polyphenols. Background technique [0002] Tea polysaccharide is a natural polymer compound composed of glucose, arabinose, ribose xylose, galactose, fucose and other monosaccharides, with an average molecular weight of about 4×10 4 Dalton, tea polysaccharides should also include a variety of small molecule oligosaccharides. Tea polysaccharides have the functions of lowering blood sugar, lowering blood fat, enhancing immunity, anti-atherosclerosis, anti-coagulation, and anti-thrombosis. Although there are various techniques for extracting tea polysaccharides from tea leaves, most of them have the following main steps: [0003] Tea powder—→dissolve in hot water—→centrifuge to remove insoluble impurities—→obtain polysaccharide-containing supernatant—→use Sevag method or other methods to remove protein—→add 3-5 times the volume ...

AI Technical Summary

Problems solved by technology

[0004] The traditional method is used to extract tea polysaccharides. Although the source of raw materials is rich, the extraction rate is low, because alcohol precipitation only works on macromolecular polysaccharides, and there are still a large number of small molecule oligopolysaccharides with medicinal effects that have not been precipitated. In solution

At the same time, it consumes a lot of energy and alcohol, which increases the production cost