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Effect of Soaking of Sub-ingredients on Odor and Fermentation Characteristics of Kimchi

부재료 침지처리가 김치의 냄새 및 발효 특성에 미치는 영향

  • Choi, A-Reum (Dept. of Food and Biotechnology, and Center for Food Function and Safety, Hoseo University) ;
  • Park, Dong-Il (Dept. of Food and Biotechnology, and Center for Food Function and Safety, Hoseo University) ;
  • Yoo, Gui-Jae (Dept. of Food and Biotechnology, and Center for Food Function and Safety, Hoseo University) ;
  • Kim, So-Young (Dept. of Food and Biotechnology, and Center for Food Function and Safety, Hoseo University) ;
  • Jang, Jae-Bum (Regional Innovation Center, Hoseo University) ;
  • Chae, Hee-Jeong (Dept. of Food and Biotechnology, and Center for Food Function and Safety, Hoseo University)
  • 최아름 (호서대학교 식품생물공학과 및 식품기능안전연구센터) ;
  • 박동일 (호서대학교 식품생물공학과 및 식품기능안전연구센터) ;
  • 유귀재 (호서대학교 식품생물공학과 및 식품기능안전연구센터) ;
  • 김소영 (호서대학교 식품생물공학과 및 식품기능안전연구센터) ;
  • 장재범 (호서대학교 지역혁신센터) ;
  • 채희정 (호서대학교 식품생물공학과 및 식품기능안전연구센터)
  • Published : 2009.11.30

Abstract

The volatile flavor compounds of kimchi and its sub-ingredients were analyzed using GC/MS. The major volatile compounds of kimchi were identified as sulfide compounds, organic acids and alcohols. It was confirmed that the major volatile flavor compounds of kimchi originated from sub-ingredients such as garlic, ginger, onion and reek. To reduce the characteristic odor of kimchi, the sub-ingredients (garlic, ginger, onion and reek) were chopped into a length of 5 mm and a thickness of 0.3 mm, blanched at 100${^{\circ}C}$ for 2 min, and then soaked in water at 4${^{\circ}C}$ for 12 hr. The effects of soaking of the sub-ingredients on sensory evaluation with regard to characteristic odor of kimchi such as sour and moldy odor were investigated. The sour and moldy odors of kimchi were significantly reduced by the soaking of sub-ingredients. Additionally the addition of soaked sub-ingredients in kimchi had influences on the change of pH, total acidity and lactic acid bacterial count of kimchi during fermentation.

김치와 각각의 부재료들의 향기 성분을 비교하기 위하여 GC/MS로 정성 분석한 결과, 김치의 향기 성분은 sulfide 계열의 황 화합물과 유기산, 알코올류 등으로 나타났고, 김치의 냄새를 구성하는 물질들은 김치의 냄새를 각각의 부재료에서 검출된 향기 성분들로부터 유래한 것으로 확인되었다. 김치 특유의 이취를 저감시키기 위하여 김치의 부재료인 마늘, 생강, 양파 및 파를 각각 5 mm의 길이와 0.3 mm의 두께로 세절하고 100$^{\circ}C$ 에서 2분간 데친 후, 정수된 물 4$^{\circ}C$ 에서 12시간 동안 침지처리 하였다. 부재료 침지처리가 김치의 군덕내(moldy odor)와 신내(sour odor)에 미치는 영향을 관능검사로 평가한 결과, 세절침지처리김치에서 일반김치에 비하여 신내와 군덕내가 크게 감소한 것으로 나타났다. 또한 부재료의 침지처리가 숙성 중 김치에서 pH, 산도, 유산균수에 영향을 미치는 것으로 나타났다.

Keywords

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