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http://dx.doi.org/10.3746/jkfn.2007.36.9.1198

Monitoring on Extraction Conditions for Physicochemical Qualities of Ethanol Extract from Garlic  

Cha, Tae-Yang (R&D Center, Kim Jeong Moon Aloe Co. LTD.)
Kim, Seong-Ho (Dept. of Bio-food Science, Kyungbuk College of Science)
Kwon, Taeg-Kyu (School of Medicine, Keimyung University)
Kwon, Joong-Ho (Dept. of Food Science and Biotechnology, Kyungpook National University)
Lee, Sang-Han (Dept. of Food Science and Biotechnology, Kyungpook National University)
Lee, Jin-Man (Dept. of Food and Biotechnology, Hoseo University, Center for Food Function and Safety, Hoseo University)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.36, no.9, 2007 , pp. 1198-1204 More about this Journal
Abstract
This study was carried out to find the optimal conditions for the extraction of the effective ingredients based on central composite by monitoring the extraction characteristics of each ingredient with a response surface methodology. The optimal condition for the effective component alliin was extract temperature of $60.86^{\circ}C$, extract time of 3.77 hr, and ethanol concentration of 50.68%, and that for allicin was $65.11^{\circ}C$, 2.79 hr, and 13.62%, respectively, with the maximum extraction of 16.72 mg%. The maximum value of extracted total phenolics was 16.72 mg%, the optimal condition for electron donating ability was $93.35^{\circ}C$, 3.22 hr and 10.38%. The optimal conditions for pH 1.2 and 3.0 nitrite-scavenging ability was extract temperature of $79.77^{\circ}C$ and $76.46^{\circ}C$, extract time of 3.22 hr and 3.31 hr, and the ethanol concentration of 10.38% and 1.12%, respectively. With this optimal condition, the obtained maximum values for nitrite-scavenging activities at pH 1.2 and 3.0 were 94.85% and 63.22%, respectively.
Keywords
garlic; response surface methodology; effective ingredients; antioxidant; ethanol extract;
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