Food Science and Preservation (한국식품저장유통학회지)

The Korean Society of Food Preservation (한국식품저장유통학회)
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Characteristics of Alcohol Fermentation in Oriental Melon by Different Yeast

효모 종류에 따른 참외의 알코올발효 특성

  • Jo, Yong-Jun (Department of Food Science and Technology, Keimyung University) ;
  • Park, Chan-Woo (Department of Food Science and Technology, Keimyung University) ;
  • Jang, Se-Young (Department of Food Science and Technology, Keimyung University, KMF Co, Ltd.) ;
  • Kim, Ok-Mi (Faculty of Hotel Culinary Arts, Taekyeung College) ;
  • Jeong, Yong-Jin (Department of Food Science and Technology, Keimyung University)
  • 조용준 (계명대학교 식품가공학과) ;
  • 박찬우 (계명대학교 식품가공학과) ;
  • 장세영 (계명대학교 식품가공학과 및 (주)KMF) ;
  • 김옥미 (대경대학교 호텔조리계열) ;
  • 정용진 (계명대학교 식품가공학과)
  • Received : 2011.04.08
  • Accepted : 2011.09.23
  • Published : 2011.10.30
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Abstract

This study was conducted to investigate and compare the characteristics of alcohol fermentation in oriental melon by different yeast. As a result, no significant difference in pH, total acidity and sugar content was found in alcohol fermentation of oriental melon by different yeast. The pH was shown to be constantly maintained but the total acidity was shown to increase during fermentation process. The sugar content was rapidly decrease starting from 3 day of fermentation, and it was reduced to be approximately 7 oBrix after fermentation. For organic acid content, lactic and citric acid contents were shown to be the highest in all periods of fermentation, which revealed that lactic and citric acid were major organic acids. Free sugar content were shown to gradually decrease during the fermentation and to be rarely detected at 9 days of fermentation. Alcohol content was shown to be 14.20% at (C) S. cerevisiae RC-212, which was the highest content. It was shown to be more than 12% at other periods, which showed that no significant difference in alcohol content was found according to different yeast. For alcohol components, acetaldehyde content was shown to be the highest at (E) S. cerevisiae K1-V1116, and methanol content was shown to be relatively higher at (C) S. cerevisiae RC-212 and (D) S. bayanus EC-1118. N-propanol, 2-methyl-1-propanol and isoamyl alcohol, which belong to fusel oil, were shown to be produced at 3 day of fermentation and gradually increase. These results, no significant difference in physicochemical properties of alcohol fermentation in oriental melon by different yeast.

본 연구에서는 참외를 이용한 알코올 발효과정에서 효모에 따른 발효 특성을 비교 조사하였다. 그 결과 pH, 총산도 및 당도는 효모에 따른 큰 차이를 보이지 않았으며 발효과정에서 pH는 일정하게 유지되었으나 총산도는 증가하는 경향으로 나타났다. 당도는 발효 3일째부터 급격하게 감소하여 발효 후 약 7 $^{\circ}Brix$로 감소하였다. 유기산 함량은 모든 구간에서 lactic 및 citric acid의 함량이 가장 높게 나타나주요 유기산으로 나타났다. 유리당 함량은 발효가 진행됨에 따라 서서히 감소하여 발효 9일째는 대부분 검출되지 않았다. 알코올함량은 (C) S. cerevisiae RC-212에서 14.20%로 가장 높았으며 나머지 구간에서도 12%이상의 알코올이 생성되어 효모 종류에 따른 알코올 함량은 큰 차이가 없었다. 알코올 성분에서 acetaldehyde의 함량은 (E) S. cerevisiae K1-V1116에서 가장 높았으며 methanol함량은 (C) S. cerevisiae RC-212와 (D) S. bayanus EC-1118에서 비교적 높았다. Fusel oil류인 n-propanol, 2-methyl-1-propanol 및 isoamyl alcohol은 발효 3일째부터 대부분 생성되어 점차 증가하였다. 이상의 결과 참외 알코올 발효에서 효모에 따른 이화학적 품질특성에는 큰 차이가 나타나지 않았다.

Keywords

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