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Method for extracting curcumin from peltate yam

A technology of curcumin and turmeric, applied in chemical instruments and methods, organic chemistry, azo dyes, etc., can solve problems such as environmental pollution and waste of resources, and achieve the effects of energy saving, low cost and wide economic value.

Inactive Publication Date: 2004-12-15
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It wastes resources and pollutes the environment

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0010] Turmeric is washed with water, crushed, fermented and hydrolyzed with acid. After centrifugation, weigh 100 grams of 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 separating funnel, add 100ml of 0.5mol / L sodium hydroxide solution, shake for 2 minutes, let it stand for 60-90 minutes, wait for the organic phase and the aqueous phase to separate clearly, and then separate the aqueous phase , then add 100 milliliters of 0.5mol / L sodium hydroxide solution, and then extract once more, after layering, separate the water phase, combine the two water phases and put them in a 500 milliliter beaker, neutralize with 6mol / L hydrochloric acid...

Embodiment 2

[0013] 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, stir for 10 minutes, and wash with a cloth. Suction filtration through a 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. Combine the water phase separated twice and put it in a 500ml beaker, neutralize it to PH6 with 6mol / L hydrochloric acid, remove most of the water by evaporation, cool it, extract it four times with 400ml 95% ethanol, and use qualitative filter paper for the last time Filtration, the filtrate and the previous ethanol extract were combined and placed in a glass still, most ...

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Abstract

The process of extracting curcumin from peltate yam includes washing of peltate yam, crushing, fermentation, acid adding hydrolysis, centrifugal separation of solid matter as hydrolysis product from acid water solution, ethyl acetate extraction of curcumin from the water solution, butyl acetate extraction of curcumin from the solid matter, and back extraction to separation curcumin. The separated curcumin is further processed to obtain curcumin product. The said process is simple, convenient in operation, safe, low in cost and low in power consumption.

Description

technical field [0001] The invention relates to extracting curcumin from plants, more specifically to a method for extracting curcumin from turmeric. Background technique [0002] Curcumin is a natural pigment commonly used in candy, ice cream, carbonated drinks, pastries, etc. It is mainly extracted from the rhizome of Curcuma longa. [0003] Turmeric is a plant of the genus Dioscorea, and its rhizome 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] At present, people mainly extract saponin from turmeric, and other useful ingredients such as curcumin are not utilized, but instead are treated as waste and discharged into the environment along with the waste water of saponin production. Not only a waste of resources, but also pollute the environment. Contents of the invention [0005]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L5/40C07C49/255C09B61/00
Inventor 韦进宝
Owner WUHAN UNIV
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