Chinese yam polysaccharides extract and preparation method and application thereof
A technology for yam polysaccharide and extract is applied in the processing, extraction and separation of natural products, and in the food field, and can solve the problems of not disclosing the content of yam polysaccharide, difficult to realize industrialized production, high solvent toxicity, etc., and achieve immunity enhancement and production process simplification. , The effect of high production safety
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Embodiment 1
[0032]The yam slices are crushed into yam powder of more than 200 meshes; 250L of 80% ethanol aqueous solution is added to a 500L reaction pot, and 50kg of yam powder is added after stirring, heated and refluxed for 2 hours at a temperature of 50°C; centrifuged, the sediment is stirred with 250L of water, Use a colloid mill to make yam slurry; use a pump to input the yam slurry into the extraction tank, add 500L of water, start stirring, heat and reflux for extraction for 3 hours at a temperature of 50°C; centrifuge the water extract, and concentrate the supernatant under reduced pressure at 60°C. Prepare a liquid extract with a Baume degree of 7; add 2 to 10 times the volume of 95% ethanol to the liquid extract for ethanol precipitation, and centrifuge the ethanol precipitation solution; add 2 to 10 times the weight of water to the sediment, stir and dissolve, and centrifuge; The supernatant was vacuum freeze-dried to obtain 6.4 kg of yam polysaccharide extract; the product yi...
example 2
[0037] The yam slices are crushed into yam powder of more than 200 mesh; 500L of 85% ethanol aqueous solution is added to a 1000L reaction pot, and 100kg of yam powder is added after stirring, heated and refluxed for 4 hours at a temperature of 40°C; centrifuged, the sediment is stirred with 500L of water, Use a colloid mill to make yam slurry; use a pump to input the yam slurry into the extraction tank, add 1000L of water, start stirring, heat and reflux for extraction for 4 hours at a temperature of 40°C; centrifuge the water extract, and concentrate the supernatant under reduced pressure at 70°C. Prepare a fluid extract with a Baume degree of 20; add 2 to 10 times the volume of 95% ethanol to the fluid extract for ethanol precipitation, and centrifuge the ethanol precipitation solution; add 2 to 10 times the weight of water to the sediment, stir and dissolve, and centrifuge; The supernatant was spray-dried to obtain 10.8 kg of yam polysaccharide extract; calculated as dry ya...
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