The Korean Journal of Food And Nutrition (한국식품영양학회지)

The Korean Society of Food and Nutrition (한국식품영양학회)
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Optimization of Extraction Conditions for Garlic Oleoresin and Changes in the Quality Characteristics of Oleoresin during Storage

마늘 Oleoresin 추출조건의 최적화 및 저장 중 품질변화

  • Kim You-Pung (Department of Food Science and Technology, Sejong University) ;
  • Lee Gil-Woo (Department of Food Science and Technology, Sejong University) ;
  • Oh Hoon-Il (Department of Food Science and Technology, Sejong University)
  • 김유풍 (세종대학교 식품공학과) ;
  • 이길우 (세종대학교 식품공학과) ;
  • 오훈일 (세종대학교 식품공학과)
  • Published : 2006.06.01
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Abstract

This study was carried out to optimize the extraction conditions of oleoresin from garlic and to investigate its physicochemical changes during storage at $4^{\circ}C\;and\;25^{\circ}C$. Ethanol was used as solvent for extraction of oleoresin from garlic. On the basis of yield and thiosulfinate contents, the optimum mixing ratio of garlic to ethanol, extraction temperature, time, and number of extraction repeats were found to be 1 to 2(w/v), $30^{\circ}C$, 3 hours, and three extraction repeats, respectively. The yield and thiosulfinate contents of garlic oleoresin under the above condition were 14.52% and $209.93{\mu}mol/g$, respectively. Five volatile sulfide compounds were identified by GC/MS of garlic oleoresin, i.e., diallyl disulfide, methyl allyl trisulfide, 3,4-dihydro-3-vinyl-1,2-dithiin, 2-vinyl-4H-1,3-dithiin and diallyl trisulfide. After 30 days of storage at $4^{\circ}C$, the thiosulfinate content of garlic oleoresin was $32.37{\mu}mol/g$, while there was no detectable amount of thiosulfinate in the oleoresin stored at $25^{\circ}C$. Brown color and turbidity increased significantly during the storage of garlic oleoresin at $25^{\circ}C$ as compared to storage at $4^{\circ}C$, while relatively little change in acidity was observed in the oleoresin regardless of storage temperature.

마늘의 일시 대량 처리가 가능하고, 맛과 향미의 임의 조절이 가능하여 향신료의 품질을 균일화 및 표준화 시킬 수 있으며 유효 성분을 함유하고 있는 가공형태인 oleoresin을 제조하기 위하여 마늘의 ethanol 추출 조건에 의한 oleoresin의 최적 수율 및 thiosulfmate의 함량에 대하여 조사한 결과 시료 중량에 대한 용매의 적정 혼합 비율은 1:2(w/v)이었으며, 추출 온도와 시간은 각각 $30^{\circ}C$, 3 시간으로 조사되었으며 추출 횟수는 3번씩 추출하였을 때 oleoresin의 최적 수율 및 thiosulfinate의 함량은 각각 14.52%와 $209.93{\mu}mol/g$였다. 또한 위 조건 하에서 제조된 oleoresin의 향기 성분 분석 결과 diallyl disulfide, methyl allyl trisulfide, 3,4-dihydro-3vinyl-1,2-dithiin, 2-vinyl-4H-1,3-dithiin, diallyl trisulfide 등의 5종류의 마늘의 주요 향기 성분인 휘발성 황화합물이 검출되었다. Oleoresin의 저장시 품질 특성 변화를 조사하기 위하여 $4^{\circ}C$ 및 $25^{\circ}C$에서 30 일간 저장한 결과 thiosulfinate 함량이 $4^{\circ}C$에서는 $32.37{\mu}mol/g$으로 측정되었으나 $25^{\circ}C$ 저장시에는 거의 측정되지 않았다. 갈색도 및 탁도는 $25^{\circ}C$에서 저장하였을 경우 $4^{\circ}C$ 저장에 비해 현저히 증가하였으며, 산도의 경우 저장 온도에 관계없이 큰 변화를 보이지 않아 $4^{\circ}C$에서 저장시 마늘 oleoresin의 품질 특성이 좋게 나타났다.

Keywords

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