2008•Heilongjiang yiyao kexueRequires access

Supercritical CO_2 extraction of onion oil

Xiaoyan Tan

Abstract

Objective:To determine the optimal technology conditions for the extraction of onion oil.Methods:Supercritical CO2 extraction was used with absolute alcohol as entrainer,and the L9(33)orthogonal experiment was designed,and the effects of extraction pressure,temperature and material-entrainer ratio on the extraction rate were investigated.Results:The optimal extraction conditions were as follows:pressure 30 MPa,temperature 40℃ and ratio of entrainer to material-liquid 1:1.Conclusion:Both the onion oil quality and the extraction rate are higher by supercritical CO2 extraction.

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Key concepts: Extraction (chemistry), Supercritical fluid, Chromatography, Supercritical carbon dioxide, Supercritical fluid extraction, Chemistry, Alcohol, Materials science