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Effect of Cooking Methods on S-Allyl-L-Cysteine Content of Garlic

마늘의 조리방법에 따른 S-Allyl-L-Cysteine 함량 변화

  • Lee, Sang Hoon (Department of Agrofood Resources, National Academy of Agricultural Sciences, Rural Development Administration) ;
  • Jeong, Yun Sook (Department of Agrofood Resources, National Academy of Agricultural Sciences, Rural Development Administration) ;
  • Hwang, Kyung-A (Department of Agrofood Resources, National Academy of Agricultural Sciences, Rural Development Administration) ;
  • Song, Jin (Department of Agrofood Resources, National Academy of Agricultural Sciences, Rural Development Administration) ;
  • Noh, Geon Min (Department of Agrofood Resources, National Academy of Agricultural Sciences, Rural Development Administration) ;
  • Hwang, In Guk (Department of Agrofood Resources, National Academy of Agricultural Sciences, Rural Development Administration)
  • 이상훈 (농촌진흥청 국립농업과학원 농식품자원부) ;
  • 정윤숙 (농촌진흥청 국립농업과학원 농식품자원부) ;
  • 황경아 (농촌진흥청 국립농업과학원 농식품자원부) ;
  • 송진 (농촌진흥청 국립농업과학원 농식품자원부) ;
  • 노건민 (농촌진흥청 국립농업과학원 농식품자원부) ;
  • 황인국 (농촌진흥청 국립농업과학원 농식품자원부)
  • Received : 2016.04.12
  • Accepted : 2016.06.24
  • Published : 2016.08.31

Abstract

This study investigated changes in the S-allyl-L-cysteine (SAC) content of garlic using different cooking methods. Methods for determining SAC were validated by determining specificity, linearity, limit of detection (LOD), limit of quantification (LOQ), precision, and accuracy using an high-performance liquid chromatography-fluorescence detection system. Results showed high linearity in the calibration curve with a coefficient of correlation ($R^2$) of 0.9999. The LOD and LOQ values for SAC were 0.15 and $0.47{\mu}g/mL$, respectively. The relative standard deviations for intra- and inter-day precision of SAC were less than 5%. The recovery rate of SAC was in the range from 97.35% to 97.47%. The SAC content of raw garlic was 2.77 mg/g, and there was no significant difference in SAC content according to blanching and microwave treatment. However, SAC content upon boiling and autoclaving at $110^{\circ}C$ and $121^{\circ}C$ increased from 3.50~9.16 mg/g, 6.52~16.21 mg/g, and 14.15~50.24 mg/g with increasing cooking temperature and time, respectively.

본 연구에서는 마늘의 기능성분인 S-allyl-L-cysteine(SAC) 분석법을 검증하고 조리방법에 따른 마늘의 SAC 함량을 분석하였다. SAC 분석법의 유효성을 검증하기 위하여 특이성, 직선성, 검출한계, 정량한계, 정밀성 및 정확성을 평가하였다. SAC 표준물질과 마늘 추출물을 유도체화시킨 후 fluorescence detector로 분석한 결과 동일한 머무름 시간을 갖는 단일 피크를 확인하였다. 직선성은 상관계수 값이 0.9999였으며, 검출한계는 $0.15{\mu}g/mL$, 정량한계는 $0.47{\mu}g/mL$, 정밀성의 상대표준편차는 5% 이하, 정확성인 회수율은 95% 이상으로 우수하였다. 생마늘의 SAC 함량은 2.77 mg/g이었으며, 데치기와 전자레인지 처리는 조리 수준에 따라 SAC 함량에 차이를 보이지 않았다. 삶기와 고압멸균처리 시 조리시간이 증가함에 따라 SAC 함량은 증가하였고, 특히 $121^{\circ}C$에서 60분 고온고압처리 할 경우 50.24 mg/g으로 증가하였다.

Keywords

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