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Optimization of Supercritical CO_2 Extraction of Allicin from Garlic Cloves

Ningping Tao

Abstract

We optimized the supercritical CO2 extraction of allcin from garlic cloves to obtain the highest extraction yield by single-factor and orthogonal array methods.The optimal conditions for the improved supercritical CO2 extraction of allicin were determined as follows:extraction press 15 MPa,extraction temperature 40 ℃,static extraction time 30 min and dynamic extraction time 105 min.Under these conditions,the extraction yield could reach 76.70%,which was higher than 63.16% by traditional solvent extraction and 68.12% by ultrasonic-assisted extraction.

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Key concepts: Allicin, Extraction (chemistry), Supercritical fluid, Supercritical carbon dioxide, Yield (engineering), Chromatography, Supercritical fluid extraction, Solvent