Optimization of Microwave-Assisted Extraction under Atmospheric Pressure Condition for Soluble Ginseng Components

상압조건의 마이크로웨이브 추출공정에서 가용성 인삼성분의 추출조건 최적화

  • Kwon, Joong-Ho (Department of Food Science and Technology, Kyungpook National University) ;
  • Kim, Kyung-Eun (Department of Food Science and Technology, Kyungpook National University) ;
  • Lee, Gee-Dong (Department of Traditional Fermented Food, Kyongbuk College of Science)
  • 권중호 (경북대학교 식품공학과) ;
  • 김경은 (경북대학교 식품공학과) ;
  • 이기동 (경북과학대학 전통발효식품과)
  • Published : 2000.02.28

Abstract

Considering the thermal unstableness of ginseng components, microwave-assisted extraction(MAE) was performed under the atmospheric pressure condition. The monitoring of extraction characteristics and the optimization of extraction conditions were made by response surface methodology. The extraction efficiency of soluble ginseng components was high at lower ethanol concentration and at higher microwave power, while crude saponin content was easily extracted at higher ethanol concentration. Estimated conditions for the maximized extraction of soluble components including crude saponin, total phenolics and electron donating ability were $54{\sim}60%$ in ethanol concentration, $41{\sim}90$ W in microwave power, and within 4 min in extraction time. Predicted values at the optimum condition(60% ethanol, 80 W microwave power and 4 min extraction time) were in good agreement with observed values.

Keywords

ginseng;microwave-assisted extraction;atmospheric condition;optimization