Efficient extraction method of curcumin

An extraction method and technology of curcumin, which is applied in the field of efficient extraction of curcumin, can solve problems such as inapplicable curcumin extraction, achieve excellent solubility, easy separation and recovery, and improve the extraction rate

Pending Publication Date: 2020-11-06
福州福德恩生物科技有限公司
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Problems solved by technology

[0007] But this ionic liquid is not suitable for the extraction of curcumin, the present inventor studies and obtains a kind of extraction method that is suitable for curcumin for the character of curcumin, and take curcumin yield as investigation index, has studied extracting turmeric The optimal process parameters of the prime method determined the optimal purification process conditions

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  • Efficient extraction method of curcumin
  • Efficient extraction method of curcumin
  • Efficient extraction method of curcumin

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Embodiment Construction

[0031] one. Material preparation

[0032] Reagents: Hexafluoroacetylacetone (HFAC, ≥99%), copper chloride dihydrate (≥99%), ammonia water (25-28%), acetonitrile (≥99%), ethanol (≥99%), allyl chloride ( analytically pure), 1-vinylimidazole (analytical pure), N-methylimidazole (99%), formic acid (analytical pure), 1,3-propane sultone (analytical pure), acetone (analytical pure), Ethyl acetate (analytical grade), concentrated sulfuric acid (≥99%), deionized water, etc.

[0033] 2. Experimental method

[0034] 1. Preparation of solvent a

[0035] Weigh N-methylimidazole (82.1g / mol) and allyl chloride (76.5g / mol) at a ratio of 1:1 and add them to a 250ml round bottom flask accordingly, and pass the mixture under a water bath at 75°C Electromagnetic stirring was refluxed for 24 hours to stop the reaction, the mixture was transferred into a separatory funnel, and stood for a period of time. The solution was divided into upper and lower layers, and the lower layer was collected. T...

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Abstract

The invention relates to an efficient extraction method of curcumin. The method comprises the following steps of: 1, adding an extracting agent A into crushed curcuma longa powder, and performing filtering to obtain a solid material I; 2, adding an extracting agent B into the obtained solid material I, and performing filtering to remove slag to obtain an extracting solution II; 3, centrifuging theextracting solution II, and performing filtering to obtain a solid material III; and 4, cleaning and drying the solid material III to obtain curcumin; specifically, the extracting agent A comprises asolvent a, and the solvent a contains the following structure shown as formula (1) in the specification, in the formula (1), Y<-> is one of Cl<->, Br<->, N(CN)2<->, HCOO<-> and CH3COO<->; and the extracting agent B contains a solvent b, and the solvent b contains the following structure shown as formula (2), in the formula (2), B<-> is a metal chelating anion. According to the characteristics ofcurcumin, a method for extracting the curcumin by combining the extracting agent A and the extracting agent B is designed, so that the yield of the curcumin is relatively high, the use of organic reagents is greatly reduced, and the green and environment-friendly requirements are met.

Description

technical field [0001] The invention belongs to the technical field of plant extraction and separation, and in particular relates to a high-efficiency extraction method of curcumin. Background technique [0002] Turmeric (Curcuma longa L.) is a perennial herb belonging to Zingiberaceae. The medicinal value of turmeric refers to its dry rhizome, which is widely cultivated in tropical and subtropical regions, especially in Southeast Asia and northern Australia, and is mainly distributed in China, Africa, the United States, Japan and other countries. There are many areas where turmeric is grown in my country, mainly in Sichuan, Fujian, Hunan, Guangdong, Yunnan, Tibet, Guizhou and Taiwan. [0003] Turmeric is pungent, bitter, and mild in nature and taste, enters the heart, liver and spleen, and has the effects of breaking blood and promoting qi, dredging menstruation and stopping bleeding. Turmeric has a long history of medicinal use. In ancient Chinese medicine, it is often us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C49/255C07C45/79C07C45/78
CPCC07C45/79C07C45/78C07C49/255
Inventor 郑秋芳方丽金颜才健
Owner 福州福德恩生物科技有限公司
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