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Monitoring on Alcohol Fermentation Properties of Red Ginseng Extracts.

홍삼액의 알코올 발효 특성 모니터링

  • Kim, Seong-Ho (Department of Bio and Food Science, Kyongbuk College of Science) ;
  • Kang, Bok-Hee (Center for Food Function and Safety, Hoseo University) ;
  • Noh, Sang-Gyun (Department of Chemical Engineering, Dong Yang University) ;
  • Kim, Jong-Guk (Department of Microbiology, Kyungpook National University) ;
  • Lee, Sang-Han (Department of Food Science and Technology, Kyungpook National University) ;
  • Lee, Jin-Man (Center for Food Function and Safety, Hoseo University, Department of Food and Biotechnology & Basic Science Institute, Hoseo University)
  • 김성호 (경북과학대학 바이오식품과) ;
  • 강복희 (호서대학교 식품기능안전연구센터) ;
  • 노상균 (동양대학교 생명화학공학과) ;
  • 김종국 (경북대학교 미생물학과) ;
  • 이상한 (경북대학교 식품공학과) ;
  • 이진만 (호서대학교 식품기능안전연구센터, 호서대학교 식품생물공학과 및 기초과학연구소)
  • Published : 2008.04.30

Abstract

This study focused on alcohol fermentation properties of red ginseng extracts using Saccharomyces cerevisiae JF-Y3. Central composite design was employed to investigate the influence of red ginseng extract content ($10{\sim}50%$, v/v) and yeast extract ($0.5{\sim}2.5%$, w/v) on the properties of alcohol fermentation added with red ginseng extracts. Yeast cell growth was affected both by red ginseng extract content and yeast extract content, and red ginseng extract content had a greater effect on yeast cell number than yeast extract content. Yeast cell number increased along with decrease of the red ginseng extract content and with increase of yeast extract content. Alcohol content was maximal at 30% red ginseng extracts and 0.50% yeast extract and the predicted maximum value of alcohol content was 12.45%. Brix degree and total sugar content were significant within 1% level (p<0.01), and brix degree was affected both by red ginseng extract and yeast extract content. Total sugar content was significantly affected by red ginseng content.

홍삼액의 첨가에 따른 발효가능성을 알아보기 위하여 홍삼액의 첨가량을 달리하여 발효특성을 조사하였다. 본 실험에서는 Saccharomyces cerevisiae JF-Y3을 이용하여 발효를 실시하였으며, 홍삼액($20\;^{\circ}brix$) 함량 $10{\sim}50%$, yeast extract $0.5{\sim}2.5%$의 범위로 중심합성계획법에 의하여 10개의 구간으로 홍삼액의 알코올 발효특성을 살펴보았다. 효모수는 홍삼액 및 yeast extract 농도 모두에 영향을 받고 있었으며, 홍삼액 농도에 더 많은 영향을 받는 것으로 나타났다. 홍삼액 농도가 감소하고, yeast extract 농도가 증가할수록 효모수가 증가하는 것으로 나타났다. 알코올 함량이 가장 높게 나타난 발효조건은 홍삼액 함량 30%, yeast extract 함량 0.50%이었으며, 이때의 최대값은 12.45%로 예측되었다. 당도 및 총당 함량의 경우 각각 1%이내의 유의수준에서 유의성이 인정되었고, 당도의 경우 홍삼액 및 yeast extract 함량 두 조건에 모두 영향을 받는 것으로 나타났으며, 총당 함량의 경우 주로 홍삼액 농도에 영향을 받는 것으로 나타났다. 홍삼액 $20\;^{\circ}brix$의 함량을 $10{\sim}50%$까지 증가하여도 발효액의 알코올 함량이 모두 10% 이상이었으며, 전반적으로 홍삼액 첨가에 따른 발효의 저해는 크게 일어나지 않는 것으로 나타나 홍삼의 유효한 성분을 이용한 기능성 주류 개발 시 홍삼농축액을 효율적으로 활용할 수 있을 것이다. 또한, 앞으로 홍삼액 발효 시의 알코올 성분에 대한 분석, 발효액에 대한 관능적 특성, 유효성분 등에 대한 특성 변화 등을 통한 고품질 홍삼주 제조와 관련하여 추가적인 연구가 필요할 것으로 생각된다.

Keywords

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