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Extraction of Glycyrrhizic Acid from Licorice using Supercritical Carbon Dioxide/Aqueous Ethanol  

김현석 (수원대학교 화학공학과, 경희대학교 식품공학과)
김병용 (경희대학교 식품공학과)
이상윤 (수원대학교 화학공학과, 연세대학교 화학공학과)
김우식 (연세대학교 화학공학과)
이은규 (한양대학교 화학공학과)
유종훈 (수원대학교 화학공학과)
임교빈 (수원대학교 화학공학과)
Publication Information
KSBB Journal / v.18, no.5, 2003 , pp. 347-351 More about this Journal
Abstract
The extraction of glycyrrhizic acid from licorice using supercritical carbon dioxide (SCCO$_2$) was investigated with respect to the effects of extraction parameters such as the kind and amount of modifier, temperature, pressure, and extraction time. The conventional organic solvent extraction was also conducted for a quantitative comparison. The content of glycyrrhizic acid in crude extracts was analyzed by HPLC and the yield of glycyrrhizic acid was computed as a weight percent recovery. The optimal pressure and temperature for SCCO$_2$ extraction were found to be 40 MPa and 80$^{\circ}C$, respectively, when SCCO$_2$ was modified with 70% aqueous ethanol. Under the same pressure and temperature, the highest recovery was attained to be 104.57% in the first 60 min when the concentration of 60%, aqueous ethanol in SCCO$_2$ was 15%.
Keywords
Supercritical carbon dioxide; modifier; glycyrrizic acid; licorice;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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