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Hericium erinaceus polysaccharide is one of the main active ingredient Hericium has immunomodulatory , anti-tumor, anti-aging , lowering blood pressure, lowering blood sugar, anti-mutation , radiation and other effects . As raw material fruiting bodies of Hericium Hericium erinaceus polysaccharide extraction , removal of protein , bleaching and a series of physical and chemical properties of the polysaccharides were studied . This paper compares the Hericium erinaceus polysaccharide extracted several methods , experimental results show that the microwave extraction better . On the basis of single factor experiment , obtained by orthogonal experiment optimized experimental conditions were: liquid ratio of 10:1 , the microwave power 480W , microwave treatment for 5 min . The deproteinized Sevage law and TCA method , and found that the TCA removal by protein better , the experimental TCA deproteinized polysaccharide of Hericium the deproteinized TCA amount of 0.1 % ( a concentration of 1 % of the polysaccharide solution). Compared the effect of active carbon used and H2O2 bleaching , the results show that the active carbon used better , good experimental conditions were: carbon dosage of 1% ( polysaccharide solution with a concentration of 1% ) by single factor experiments , the bleaching temperature 30 ℃, bleaching time of 1h. Hericium polysaccharides were isolated and purified by Sephadex G - 75 column chromatography to obtain relatively pure Hericium polysaccharide , this polysaccharide relative molecular mass of 20996 to gas chromatographic analysis , the results showed that : Hericium erinaceus polysaccharide composed of glucose , D- galactose , L- arabinose and D- mannose . The Hericium polysaccharide solubility and viscosity characteristics . Polysaccharide solubility experiments show that , the Hericium polysaccharide solubility be affected by temperature , low temperature insoluble , dissolved by acid, alkali and salt . The viscosity characteristic of polysaccharides experiments show Hericium erinaceus polysaccharide solution viscosity increases with the increasing concentration decreases with its temperature rises , the heat treatment has a certain stability under acidic or basic conditions , a slight decrease in viscosity under shear viscosity decreased , the shear the effect disappeared viscosity recoverable . Hericium erinaceus polysaccharide with several other substances were dubbed mixed solution , the results show that the Hericium erinaceus polysaccharide interactions with other substances can produce thinning phenomenon can also produce thickening phenomenon .
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