Journal of the Korean Society of Food Science and Nutrition (한국식품영양과학회지)

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Optimization of Extraction Conditions of Pleurotus cornucopiae by Response Surface Methodology

반응표면분석에 의한 노랑느타리버섯 추출물의 추출조건 최적화

  • Received : 2014.06.25
  • Accepted : 2014.07.16
  • Published : 2014.10.31
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Abstract

Response surface methodology (RSM) was used to optimize extraction conditions of Pleurotus cornocopiae. Coefficients of determination (R2) for dependent variables ranged from 0.86 at 0.91. Maximum extraction yield was 40.81% under the following conditions: microwave power of 60.08 watts, ethanolic concentration of 12.33%, and extraction time of 6.86 min. Maximum extraction electron donating ability was 35.72% at 44.13 watts, 19.30%, and 4.21 min. Maximum extraction superoxide dismutase (SOD)-like activity was 34.87% at 114.01 watts, 65.88%, and 1.56 min. Maximum extraction total polyphenol content was 31.77 mg/g at 50.52 watts, 23.00% and 2.90 min. Based on the superimposition of four dimensional RSM with respect to extraction yield, electron donating ability, SOD-like activity, and total polyphenol content obtained under various extraction conditions, the optimum ranges of extraction conditions were as follows: microwave power of 71.48~92.84 watts, ethanol concentration of 55.01~71.66%, and extraction time of 3~9 min.

노랑느타리버섯의 항산화 활성을 측정하여 효율적 추출조건을 예측하기 위해 마이크로웨이브 에너지, 에탄올 농도, 추출시간의 요인변수를 중심합성법에 따라 설정하여 반응 표면분석을 통해 최적화 조건을 설정하였다. 노랑느타리버섯 추출물의 수율, 전자공여작용, SOD 유사 활성, 총 폴리페놀 함량에 대한 반응표면의 회귀식 $R^2$ 값이 각각 0.91, 0.87, 0.86 및 0.87로 분석되었고, 수율은 P<0.01, 항산화 활성이 P<0.05에서 유의적 수준을 나타냈다. 노랑느타리버섯은 요인변수에 따라 수율, 전자공여작용, 총 폴리페놀 함량의 경우 마이크로웨이브 에너지의 영향을 가장 많이 받았고, SOD 유사 활성의 경우 에탄올 농도에 따른 유의적 차이를 보였다. 추출물의 각 특성을 모두 만족시키는 최적의 추출조건의 범위는 superimposing 하여 마이크로웨이브 에너지 71.48~92.84 watts, 에탄올 농도 55.01~71.66%, 추출시간 3~9분으로 예측되었다.

Keywords

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