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Optimization for the Post-Harvest Induction of trans-Resveratrol by Soaking Treatment in Raw Peanuts

침지조작에 의한 레스베라트롤 증가조건의 최적화

  • Lee, Seon-Sook (Dept. of Food Science and Technology, Chungbuk National University) ;
  • Seo, Sun-Jung (Dept. of Food Science and Technology, Chungbuk National University) ;
  • Lee, Boo-Yong (Graduate School of Complementary Alternative Medicine, Pochun CHA University) ;
  • Lee, Hee-Bong (Dept. of Food Science and Technology, Chungbuk National University) ;
  • Lee, Junsoo (Dept. of Food Science and Technology, Chungbuk National University)
  • 이선숙 (충북대학교 식품공학과) ;
  • 서선정 (충북대학교 식품공학과) ;
  • 이부용 (포천중문의과대학교 대체의학대학원) ;
  • 이희봉 (충북대학교 식품공학과) ;
  • 이준수 (충북대학교 식품공학과)
  • Published : 2005.04.01

Abstract

In this study, the effects of varying the amount of water, soaking time at $25^{\circ}C$ and drying time after soaking at $45^{\circ}C$ on the induction of resveratrol were evaluated to optimize the soaking treatment by response surface methodology (RSM). After response surface regression (RSREG), the second-order polynomial equation was fitted to the experimental data. The analysis of variance showed that the model appeared to be adequate $(R^2=0.9547)$ with no significant lack of fit (p>0.1). From statistical analysis, amount of water and soaking time were found to be significant factors. On the other hand, drying time was not significant. Ridge analysis showed that the optimized parameters were $67.15\%$ for amount of water, 19.58 hr for soaking time, 65.56 hr for drying time. It was confirmed that resveratrol content was increased from $0.1\;{\mu}g/g$ to $4.55\;{\mu}g/g$ under the optimized conditions. In addition, the experimental values at the optimized condition agreed with values predicted by ridge analysis. The analytical method validation parameters such as accuracy, precision, and specificity were calculated to ensure the method's validity.

레스베라트롤은 항암작용, 항혈전작용, 항산화작용 및 심혈관계질환의 발병을 낮추는작용이 있다고 보고되어 있다. 본 실험에서는 땅콩에 함유되어 있는 레스베라트롤의 함량을 증가시키기 위한 침지조건을 반응표면분석법을 이용하여 최적화하였다. 레스베라트롤의 함량에 영향을 미치는 요인으로는 침지 시 물의 양(농도), 침지시간 그리고 침지 후 건조시간을 검토하였으며, 실험결과 침지 시 물의 양(농도)은 $67.15\%$, 침지시간은 19.57 hr, 침지 후 건조시간은 65.56 hr으로 나타났다. 이 조건하에서 레스베라트롤은 $0.1\;{\mu}g/g$에서 $4.55\;{\mu}g/g$으로 약 45배 정도 증가함을 확인할 수 있었다. 레스베라트롤의 증가에 가장 큰 영향을 주는 요인으로는 침지시간이었으며 그 다음으로 침지 시 물의 양(농도)이 영향을 주었으며, 침지 후 건조시간은 별 영향을 주지 않았다. 본 실험의 이차 다항 회귀 곡선식에 대한 적합도를 결정 계수로 조사한 결과 높은 적합도를 나타내었으며, 분석 방법에 대한 검증에서도 그 결과가 우수하였다.

Keywords

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