Fermentation medium for extracting astragalus polysaccharides

Abstract

The invention discloses a fermentation medium for exracting astragalus polysaccharides. The fermentation medium is prepared from the following compositions in parts by weight: 3.908-6.408 parts of whey powder, 0.445-0.467 parts of peptone, 0.04-0.2 parts of glucose, 0.102-0.522 parts of yeast powder, 0.142-0.246 parts of inorganic salt, 12.54-19.46 parts of astragalus powder and 200 parts of water, wherein the inorganic salt comprises potassium dihydrogen phosphate and dipotassium hydrogen phosphate. The fermentation medium for exracting astragalus polysaccharides, disclosed by the invention, can be used for obviously and stably improving the extraction ratio of astragalus polysaccharides and ensuring that the content of astragalus polysaccharides in extraction products is obviously improved.

Description

technical field [0001] The invention relates to a bacterial culture medium, in particular to a fermentation medium for extracting astragalus polysaccharide. Background technique [0002] Astragalus polysaccharide is the active ingredient of traditional Chinese medicine Astragalus. It is a plant polysaccharide with a molecular weight of about 37,500 connected by α-glucoside bonds. After hydrolysis, glucose, lactose and arabinose can be detected. The molar ratio of the three sugars is: 1:0.95 :0.70. Astragalus polysaccharide is an effective immune enhancer, and can induce the proliferation of probiotics in the body and promote the micro-ecological balance of the body. Research reports have shown that astragalus polysaccharides also have health benefits such as enhancing cell metabolism, promoting blood circulation, anti-virus, anti-tumor, and anti-stress, and have been widely used as functional ingredients or taken directly. [0003] At present, the astragalus polysaccharide...

AI Technical Summary

Problems solved by technology

The traditional water extraction and alcohol precipitation method is the most commonly used extraction method at present, and the extraction rate of astragalus polysaccharide is about 5.34% on average; the ultrafine pulverization method, the extraction rate of astragalus polysaccharide in the superfine powder is about 4.69%, and the extraction rate of astragalus polysaccharide in the coarse powder is about 4.69%. The extraction rate is only about 2.16%; the extraction rate of astragalus polysaccharide by ultrasonic cell crushing method is about 7.6%; the extraction rate of astragalus polysaccharide by microwave extraction method is about 6.55%; the extraction rate of astragalus polysaccharide by ultrafiltration is lower than that by water extraction and alcohol precipitation method , but the polysaccharide content in the product is high; the extraction rate of astragalus polysaccharide obtained by alkaline water extraction is between 4.7-19.2%, and the stability is poor; the extraction rate of astragalus polysaccharide obtained by alcohol-alkaline extraction can reach up to 19.15%; cellulase The extraction rate of astragalus polysaccharides by this method is higher than that by water extraction and alcohol precipitation method, and the content of polysaccharides in the extract is high, but there is no scientific reference data for the extraction rate due to unstable extraction

[0004] Usually, the amount of raw medicinal materials consumed in the preparation of Astragalus polysaccharides is relatively large, and the utilization rate of Chinese medicinal materials is not high