Method for extracting high-purity piperine with low pollution

The invention discloses a method for extracting piperine with low pollution, and in particular relates to a method for extracting and purifying piperine by using low-toxic organic solvents including ethanol and acetone. The method comprises the steps of extracting piperine by adopting a reflux metho...

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Bibliographic Details
Main Authors LU YI, LI XIN, CHEN LIANG, YANG MENGSHI, CAO HUARU
Format Patent
LanguageEnglish
Published 28.01.2015
Subjects
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Summary:The invention discloses a method for extracting piperine with low pollution, and in particular relates to a method for extracting and purifying piperine by using low-toxic organic solvents including ethanol and acetone. The method comprises the steps of extracting piperine by adopting a reflux method and using nontoxic ethanol as a solvent, adjusting the pH value through hydrochloric acid, removing piperic acid, neutralizing redundant acid by using sodium hydroxide, adding distilled water, sufficiently cooling to obtain crude piperine, performing re-crystallization purification by using low-toxic acetone as a solvent, and performing vacuum drying to obtain high-purity piperine. The method overcomes the defects of common toxic solvents such as methanol and chloroform in traditional extraction methods and the defect of pollution to a water environment in an acid extraction method. Moreover, the method has the advantages of high extraction rate, high purity, low production cost, low pollution, simple production process and the like, and the obtained piperine product is high in activity, purely natural and high in medical value.
Bibliography:Application Number: CN20141553065