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논문 상세정보

반응표면 분석법을 이용한 치아씨 항산화 활성 추출의 최적화 조건

Optimization for Chia Seed Antioxidative Activity of Solvent Extraction Using the Response Surface Methodology

초록

본 연구에서는 치아씨의 항산화 활성을 증가시키기 위하여 추출용매 종류와 용매농도, 추출시간과 추출온도를 달리하여 총 폴리페놀 함량과 DPPH 라디칼 소거능을 측정한 후 반응표면분석을 이용하여 최적조건을 수립하였다. 치아씨 추출조건은 에탄올과 메탄올용매 모두에서 추출용매 60%, 추출시간 130분과 추출온도 $20^{\circ}C$에서 총 폴리페놀 871.00mg%($R^2=0.9507$), 557.70mg%($R^2=0.9784$)로 가장 함량이 많았고, DPPH 라디칼 소거능은 72.14%($R^2=0.9675$), 52.79%($R^2=0.9524$)의 항산화력을 보였다. 용매종류에서는 에탄올 추출용매가 메탄올 추출용매보다 같은 조건에서는 월등히 높은 항산화력을 보여 에탄올이 치아씨 추출용매로 더 우수한 용매로 선정되었다. 또한 반응표면분석 결과, 용매추출 조건에서는 에탄올 용매에서는 용매추출 시간이나 온도보다는 용매농도에 가장 큰 영향을 받았고, 메탄올 추출조건에서는 용매추출 시간에서 가장 큰 영향력을 주었다. 반응표면분석 후 용매 농도, 시간과 온도의 최적 추출조건의 범위는 에탄올 추출조건은 에탄올농도 63%, 추출시간 100분과 추출온도 $18^{\circ}C$가 최적조건이고, 메탄올 추출조건에서는 추출농도 65%, 추출시간 120분과 추출온도 $16^{\circ}C$를 보였다.

Abstract

The purpose of this study was to determine the optimum conditions of solvent extraction type and solvent concentration (60, 70, 80%, v/v), extraction time (30, 80, 130 mins) and extraction temperature (10, 15, $20^{\circ}C$) in order to increase the antioxidant activity of the chia seed. The total polyphenol content and DPPH radical scavenging activity was measured by using response surface methodology (RSM) to establish the optimal conditions. Using ethanol and methanol extractions at extraction concentrations of 60%, and time and temperature of 130 mins and $20^{\circ}C$, the maximum total polyphenol content was 871.00 mg% ($R^2=0.9507$) and 557.70 mg% ($R^2=0.9784$) for ethanol and methanol extraction respectively. Using the same extraction conditions, the maximum level of DPPH radical scavenging activity was 72.14% ($R^2=0.9675$) and 52.79% ($R^2=0.9524$) for ethanol and methanol extraction respectively. The results indicate that ethanol extracts showed a higher antioxidant activity than methanol extracts. The ethanol extraction conditions of response surface analysis (RSA) were affected more by ethanol concentration than by extraction time or temperature. In contrast, the methanol extraction conditions of response surface analysis (RSA) were affected more by extraction time. Based on the RSM, the optimum ethanol extraction conditions were the following: extraction concentration, 63%: time, 100 mins: and temperature, $18^{\circ}C$. The optimum methanol extraction conditions were the following: extraction concentration, 65%; time, 120 mins; and temperature, $16^{\circ}C$.

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