Process for extracting curcumin and curcuma oil from turmeric

Abstract

The invention discloses a process for extracting curcumin and curcuma oil from turmeric and belongs to the field of biotechnologies. The extraction process comprises the following steps: directly removing impurities from turmeric, removing stones, grinding and granulating; respectively taking n-butane and dimethyl ether in a fluid state as an extraction agent, extracting the curcumin or curcuma oil from the turmeric, filtering the extracting solution, performing reduced pressure gasification in an evaporation tank so as to obtain the curcumin or curcuma oil, and compressing, cooling and liquefying n-butane or dimethyl ether distilled off from the turmeric residues in the extracting tank for recycling. According to the process, the adopted n-butane or dimethyl ether is in a subcritical fluid state, and the curcumin and curcuma oil in the turmeric is extracted. Compared with the traditional extraction method, the process disclosed by the invention is high in extraction rate and high in quality, and the effective content of total tanshinone in the extract is 50% or higher.

Description

technical field [0001] The invention relates to a process for extracting curcumin and turmeric oil, in particular to a process for extracting curcumin and turmeric oil from turmeric, belonging to the technical field of plant extraction. Background technique [0002] Turmeric is a plant of the genus Curcuma longa in the ginger family. It has the functions of lowering blood fat, anti-tumor, anti-inflammatory, choleretic, anti-pathogenic microorganisms, termination of pregnancy, etc. It also has a good preventive effect on cardiovascular system diseases. [0003] Turmeric is usually used as a traditional Chinese medicine. Curcumin and turmeric oil are natural pigments and natural spices extracted from turmeric, and are high-quality food additives. [0004] At present, in the public reports of extracting curcumin and turmeric oil from turmeric at home and abroad, there are roughly two existing technologies. The first method is to evaporate the turmeric oil in turmeric by steam d...

AI Technical Summary

Problems solved by technology

[0011] Aiming at the problems of long production cycle, low output rate, high cost, and a certain gap with market products in the current extraction process of curcumin and turmeric oil, the present invention provides a process for extracting curcumin and turmeric oil from turmeric , the purpose of which is to simplify the production process, shorten the extraction time, increase the product output rate, reduce production costs, and realize large-scale production

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