Food Science and Preservation (한국식품저장유통학회지)

The Korean Society of Food Preservation (한국식품저장유통학회)
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Optimization of Ethanol Extraction Conditions from Glasswort (Salicornia herbacea) Using Response Surface Methodology

반응표면분석법을 이용한 퉁퉁마디 에탄올 추출조건의 최적화

  • 박정욱 (전라남도 해양바이오연구원) ;
  • 김해섭 (전라남도 해양바이오연구원) ;
  • 박인배 (전라남도 해양바이오연구원) ;
  • 신궁원 (전라남도 해양바이오연구원) ;
  • 이영재 (전라남도 해양바이오연구원) ;
  • 조영철 (전라남도 해양바이오연구원)
  • Published : 2009.06.30
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Abstract

Response surface methodology (RSM) was used to monitor the characteristics of ethanol extracts from glasswort (Salicornia herbacea). A central composite design was used to investigate the effects of the independent variables of sample ratio, extraction temperature, and ethanol concentration on the dependent variables color, sugar, salinity, yield, electron donating ability, and total polyphenol content of extracts. The maximum $^{\circ}Brix$ (8.46) was obtained under specific extraction conditions, with a sample ratio of 7.04 g/100 mL, an extraction temperature of $89.01^{\circ}C$, and an ethanol concentration of 34.29% v/v. At a sample ratio, extraction temperature, and ethanol concentration of 7.00 g/100 mL, $89.15^{\circ}C$, and 34.14% v/v, respectively, the salinity was 7.35%. When the sample ratio, extraction temperature, and ethanol concentration were 5.56 g/100 mL, $68.61^{\circ}C$, and 99.14% v/v, respectively, the maximum electron donating ability was 86.10%. A maximized total polyphenol content of 1,140.15 mg/100 g was found with the following conditions: sample ratio of 8.6 g/100 mL, extraction temperature of $64.19^{\circ}C$, and ethanol concentration of 71.74% v/v. Overall, the optimal ranges of extraction conditions for effective components of glasswort were 3.38.5.33 g/100 mL sample ratio, $55.87-76.96^{\circ}C$, and 25.00.67.31% v/v ethanol.

본 실험은 퉁퉁마디의 에탄올 추출조건에 따른 당도, 수율, 전자공여작용 및 총 페놀화합물 함량에 대해 반응표면 분석법을 이용하여 추출조건을 최적화하였다. 중심합성계획에 따라 용매에 대한 시료비($1{\sim}9\;g$/100 mL), 추출온도($35{\sim}95^{\circ}C$) 및 에탄올 농도($0{\sim}100%$)를 달리하였을 때 반응표면 회귀식의 R2는 당도, 수율, 전자공여작용 및 총 페놀화합물 함량에서 각각 0.7866(p<0.1), 0.8370(p<0.05), 0.9037(p<0.01) 및 0.9263(p<0.01)로 나타났다. 추출조건별 당도, 수율, 전자공여작용 및 총 페놀화합물 함량에 대한 반응표면을 superimposing하여 얻은 최적 추출조건 범위는 용매에 대한 시료비 $3.38{\sim}5.33\;g$/100 mL, 추출온도 $55.87{\sim}76.96^{\circ}C$, 에탄올 농도 $25{\sim}67.31%$로 나타났다. 최적 추출조건범위내의 임의의 조건인 용매에 대한 시료비 5 g/100 mL, 추출온도 $65^{\circ}C$ 및 에탄올 농도 60%를 회귀식에 대입하여 얻은 예측값은 당도 $6.36^{\circ}Brix$, 염도 5.08%, 수율 35.40%, 전자공여작용 61.24% 및 총 페놀성 화합물 917.22 mg/100 g으로 예측되었으며, 실제 실험을 통해 얻어진 값은 당도 $6.50^{\circ}Brix$, 염도 5.10%, 수율 33.84%, 전자공여작용 63.23% 및 총 페놀성 화합물 921.42 mg/100 g으로 매우 유사하게 나타났다.

Keywords

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