Journal of Food Hygiene and Safety (한국식품위생안전성학회지)

The Korean Society of Food Hygiene and Safety (한국식품위생안전성학회)
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Quality Properties of Ginger (Zingiber officinale Roscoe) Oleoresin by Supercritical Fluid Extraction

초임계유체 추출에 의한 생가 (Zingiber officinale Roscoe) Oleoresin의 품질특성

  • Lee, Myung-Hee (Region Food Industry Research Group, Korea Food Research Institute) ;
  • Lee, Kyoung-Hae (Dept. of Food Science & Biotechnology, Dongnam Health College) ;
  • Choi, Sang-Yoon (Region Food Industry Research Group, Korea Food Research Institute) ;
  • Kim, Kyung-Tack (Region Food Industry Research Group, Korea Food Research Institute)
  • 이명희 (한국식품연구원 지역특화산업연구단) ;
  • 이경혜 (동남보건대학 식품생명과학과) ;
  • 최상윤 (한국식품연구원 지역특화산업연구단) ;
  • 김경탁 (한국식품연구원 지역특화산업연구단)
  • Received : 2011.01.06
  • Accepted : 2011.02.26
  • Published : 2011.03.31
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Abstract

In order to optimize the supercritical fluid extraction (SFE) conditions of ginger oleoresin (GO), we conducted an evaluation of quality properties such as yield (%), color, volatile flavor compounds and gingerol components. The extraction yield gained by SFE increased as extraction pressure and temperature increased. The highest yield was $8.96{\pm}0.68%$ at 500 bar $65^{\circ}C$ extraction condition. The total color difference (${\Delta}E$) values decreased at high pressure. In case of the 100 bar pressure conditions, ${\Delta}E$-values increased as the temperature went up. The analysis of the 6-gingerol, 8-gingerol, 10-gingerol, 6-shogaol and curcumin contents decreased at high temperature conditions of identical pressure and increased at high pressure conditions. The volatile flavor compounds were detected in zingiberene, ${\beta}$-sesquiphellandre, ${\beta}$-phellandre, ${\alpha}{\gamma}$-curcumene, 2,3-butandiol, ${\beta}$-bisabolene and so on. Also volatile component contents showed difference in each of extraction conditions.

본 연구에서는 압력(100 bar, 250 bar, 500 bar)과 온도($35^{\circ}C$, $50^{\circ}C$, $60^{\circ}C$)조건을 달리 하여 초임계 유체 추출한 생강 oleoresin의 각 추출조건에 대한 수율, 색도, 향기성분 및 유용성분을 살펴보았다. 초임계 유체 추출한 생강 oleoresin의 수율은 추출압력이 증가할수록 그리고 추출온도가 높을수록 추출수율이 높게 나타났고, 가장 높은 추출 수율을 보인 조건은 500 bar $65^{\circ}C$ 조건에서 추출한 추출물로 수율이 8.96%로 나타났다. 생강 oleoresin의 색도를 측정한 결과 추출압력이 높을수록 전반적인 색도(${\Delta}E$)값이 감소하였고, 추출압력 100 bar 조건의 경우에는 추출온도가 높을수록 전반적인 색도(${\Delta}E$)값이 증가하는 경향을 보였다. 초임계 유체 추출한 생강 oleoresin 중의 6-gingerol, 8-gingerol, 10-gingerol, 6-shogaol 및 curcumin을 분석한 결과 동일 압력 조건에서는 추출온도가 높을수록 유용성분이 다소 감소하는 경향을 나타냈고 추출압력이 높을수록 유용성분의 함량이 높은 경향을 나타내었다. 생강 oleoresin 중의 향기성분을 분석한 결과 주요 성분으로 zingiberene, ${\beta}$-sesquiphellandre, ${\beta}$-phellandrene, ${\alpha}{\gamma}$-curcumene, 2,3-butanediol 및 ${\beta}$-bisabolene 등이 검출되었고, 각 추출조건에 따라 향기성분 함량의 차이를 나타내었다.

Keywords

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