Staged extraction method for capsaicin

Abstract

The invention discloses a staged extraction technology for capsaicin. Naturally dried capsicum annuum is ground through a family-use grinder to form powder with the granularity about 100 micrometers, the powder is added with 96% ethanol, stirred, heated and extracted for 1-4 hours in a water bath of 40-80DEG C, extracting solution is obtained after the filtration, is evaporated and concentrated under the conditions of 40-80 DEG C and vacuum degree of 0.001-0.1 megapascals, is dissolved through 96% ethanol again, and is added with sodium hydroxide solution with the concentration of 1mol / L to alkalify until the pH value is between 8-16, n-hexane is used as a solvent to extract under the condition that the volume ratio is 1:1, the aqueous phase of the lower layer is separated out, hydrochloric acid is used to regulate the pH of the aqueous phase to be smaller than 11, and butyl acetate is used to extract when the volume ratio is 1:5, so that the extraction rate can reach 85%.

Description

technical field

[0001] The invention belongs to the technical field of deep processing of agricultural and sideline products, and more specifically relates to a staged extraction technology of capsaicin. Background technique

[0002] At present, the extraction methods of capsaicin mainly include solvent extraction, supercritical fluid extraction, and microwave-assisted solvent extraction. Among them, solvent extraction has the advantages of low equipment requirements and easy realization of large-scale production. The yield of extracting capsaicin is only 23%, and the economy is poor, which limits the large-scale application. Contents of the invention

[0003] The invention overcomes the disadvantages of the prior art, and provides a new capsaicin extraction process. By adopting the process technology, the extraction cost of capsaicin is low, the process is simple, and the extraction rate is high.

[0004] The present invention is achieved through the following technical ...