Method for extracting and purifying Chinese date polysaccharide and application of Chinese date polysaccharide serving as tobacco humectant
A technology of jujube polysaccharide and purification method, applied in tobacco, application, treatment of tobacco and other directions, to achieve the effects of reducing impurities, significant industrial application value, and broad application prospects
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Embodiment 1
[0018] A method for extracting and purifying jujube polysaccharide, comprising the following steps: extracting 300 g of pulverized dry jujube with 1800 ml of diethyl ether Soxhlet for 2 hours to remove grease, and volatilizing the residue to dryness. The residue after volatilization was extracted 3 times with 750ml of boiling water, the boiling water extracts obtained for 3 times were combined, concentrated, centrifuged, the supernatant was taken, added with 3 times the volume of absolute ethanol for alcohol precipitation, and allowed to stand overnight (12h), again. The precipitate was washed 3 times with 300ml ethanol and 300ml acetone in turn, and then dissolved in distilled water. Then, papain with a weight of 1‰ of the precipitate was added and placed in a 50°C water bath for 2h, and the protein was removed by the Sevage method. Add 8g of activated carbon and place it in a 70°C water bath and heat for 3h, filter to remove the activated carbon, concentrate under reduced pr...
Embodiment 2
[0021] A method for extracting and purifying jujube polysaccharide, comprising the following steps: extracting 300 g of pulverized dry jujube with 2000 ml of diethyl ether Soxhlet for 4 hours to remove grease, and volatilizing the residue to dryness. The residue after volatilization was extracted three times with 750ml of boiling water, and the boiling water extracts obtained from the three times were combined, concentrated, centrifuged, the supernatant was taken, and the supernatant was added with 3 times the volume of absolute ethanol for alcohol precipitation, and allowed to stand for 12h. , and centrifuge again to collect the precipitate. The precipitate was washed three times with 300ml ethanol and 300ml acetone in turn, dissolved in distilled water, and then added papain with a weight of 2‰ of the precipitate and placed in a 50°C water bath for 4h, and the protein was removed by the Sevage method. Add 8g of activated carbon and place it in a 70°C water bath for 4 hours, ...
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