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Method for extracting saponin from peltate yam
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A technology of saponin and turmeric, applied in chemical instruments and methods, preparation of steroids, steroids, etc., can solve problems such as environmental pollution, and achieve the effect of avoiding water resources and energy
Inactive Publication Date: 2006-06-21
WUHAN UNIV
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Problems solved by technology
Serious environmental pollution is a major problem that needs to be solved urgently
Method used
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Embodiment 1
[0009] Turmeric is washed with water, crushed, fermented and hydrolyzed with acid. After centrifugation, weigh 100 grams of the centrifuged hydrolyzate, put it in a 250 ml beaker, add 50 ml of butyl acetate, stir for 10 minutes, and use a Buchner funnel to Suction filtration to dryness, then put the hydrolyzate in the funnel back into the original beaker, add 50 ml of butyl acetate, stir for 10 minutes, and suction filtration. The same treatment was performed four times in total. Put the obtained filtrate in a 500ml separatory funnel, add 100ml 0.5mol / L sodium hydroxide solution, shake for 2 minutes, let it stand for 60-90 minutes, wait for the organic phase and the water phase to be clearly separated, and then separate the water phase , and then add 100 milliliters of 0.5mol / L sodium hydroxide solution, and then extract once more, after layering, separate the water phase. The extract of butyl acetate contains saponin, which is concentrated by distillation in a glass still, a...
Embodiment 2
[0011] Turmeric is washed with water, pulverized, fermented and hydrolyzed with acid. After centrifugation, weigh 500 grams of centrifuged solid hydrolyzate, put it in a 1000 ml beaker, add 200 ml of butyl acetate each time, and stir for 10 minutes. Suction filtration through a Schneider funnel, extract four times in total, concentrate the obtained filtrate in a 2000 ml separatory funnel, add 100 ml 1.0mol / L sodium hydroxide solution, shake for 2 minutes, let stand for 60-90 minutes and wait for the two phases to separate After clearing, the aqueous phase was separated. Do the same back extraction. The extracting solution of butyl acetate contains saponin, distills out most of butyl acetate with glass distiller, reuses, mother liquor is transferred in the 250 milliliter beaker, cooling, leave standstill, saponin promptly precipitates out, after precipitation is complete (about 10 hour), remove the upper solution, precipitate, and dry at a temperature of 90°C or 95°C or 105°C ...
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Abstract
The invention discloses a method for extracting saponin from yellow ginger. After the turmeric is washed with water, pulverized, fermented and hydrolyzed with acid, the solid matter (hydrolyzate) and the acidic aqueous solution are centrifuged to separate the solid matter (hydrolyzate) and the acidic aqueous solution, and the solid matter is extracted with an organic solvent, and the saponin is extracted into the organic phase. After composition, the organic solvent is recovered by distillation and reused. The precipitated product is saponin, and the product is obtained after drying. The method of the invention is simple, convenient and safe to operate, and the acid hydrolyzate does not need to be washed to neutral with a large amount of water before being dried when extracting the saponin, which saves water resources and energy, is pollution-free, and has good economic and environmental benefits.
Description
technical field [0001] The invention relates to extracting saponin from plants, more specifically to a method for extracting saponin from turmeric. Background technique [0002] Saponin is a light yellow amorphous powder that exists in the rhizomes of yam plants. It has a cardiotonic effect and is mainly used in the production of various hormone drugs. [0003] Turmeric is a plant of the genus Dioscorea, and its rhizome contains multiple components. In addition to saponin, it also contains about 40% starch, 50% fiber and other chemical components. my country's turmeric is mainly produced in Yunnan, northwestern Hubei, southern Shaanxi and other places. [0004] In 1957, Rothroch first hydrolyzed yam plants with acid to obtain saponin. In the 1970s, it was discovered that fermentation followed by acid hydrolysis could increase the yield of saponin, and it was used for production in 1982. At present, the production process for extracting saponin f...
Claims
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Application Information
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