Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
권호 표지

Physicochemical Characteristics of Korean Traditional Wine Fermented from Foxtail Millet (Setaria italica Beauvios) and Nuruk at Different Addition Rates

누룩 및 조 첨가량에 따른 전통발효주의 이화학적 특성

  • Woo, Koan-Sik (Department of Functional Crop, National Institute of Crop Science, Rural Development Administration) ;
  • Lee, Jae-Saeng (Department of Functional Crop, National Institute of Crop Science, Rural Development Administration) ;
  • Ko, Jee-Yeon (Department of Functional Crop, National Institute of Crop Science, Rural Development Administration) ;
  • Song, Seuk-Bo (Department of Functional Crop, National Institute of Crop Science, Rural Development Administration) ;
  • Oh, Byeong-Geun (Department of Functional Crop, National Institute of Crop Science, Rural Development Administration) ;
  • Kang, Jong-Rae (Department of Functional Crop, National Institute of Crop Science, Rural Development Administration) ;
  • Nam, Min-Hee (Department of Functional Crop, National Institute of Crop Science, Rural Development Administration) ;
  • Ryu, In-Soo (Guardian of Korea's Traditional Wines and Spirits) ;
  • Seo, Myung-Chul (Department of Functional Crop, National Institute of Crop Science, Rural Development Administration)
  • 우관식 (농촌진흥청 국립식량과학원 기능성작물부) ;
  • 이재생 (농촌진흥청 국립식량과학원 기능성작물부) ;
  • 고지연 (농촌진흥청 국립식량과학원 기능성작물부) ;
  • 송석보 (농촌진흥청 국립식량과학원 기능성작물부) ;
  • 오병근 (농촌진흥청 국립식량과학원 기능성작물부) ;
  • 강종래 (농촌진흥청 국립식량과학원 기능성작물부) ;
  • 남민희 (농촌진흥청 국립식량과학원 기능성작물부) ;
  • 류인수 (사단법인 한국가양주협회) ;
  • 서명철 (농촌진흥청 국립식량과학원 기능성작물부)
  • Received : 2009.12.31
  • Accepted : 2010.02.17
  • Published : 2010.06.30
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Abstract

This study was carried out to compare the physicochemical characteristics of Korean traditional wine fermented from foxtail millet and nuruk at different mixing rates. The alcohol contents of fermented wine ranged from 12.70 to 13.38%. Two kinds of commercial nuruks, SH and BS nuruk, were used. The brix degrees of foxtail millet wine fermented by SH and BS nuruks were 21.6 and $22.4^{\circ}Bx$, respectively. The pH, total acidity, and turbidity of the wines fermented by SH and BS nuruks were 3.74 and 3.40, 1.40 and 1.51%, and 0.441 and 0.149, respectively. With an increase in the amount of foxtail millet, brix degree, pH, turbidity, b-value and L-value decreased, and total acidity and a-value increased. Total color difference (${\Delta}Eab$) parameter of the wine fermented by SH nuruk were 8.58, 22.59 and 22.55, while those by BS nuruk were 0.35, 4.08 and 7.16 in 30, 70 and 100% addition rates of foxtail millet, respectively. With an increase in the amount added of foxtail millet, glucose content decreased. The organic acids such as lactic acid and acetic acid were predominantly detected in the fermented wine. Finally, based on sensory evaluations, the wine fermented by BS nuruk showed the best overall quality at the 30% addition rate of foxtail millet.

대표적인 잡곡 중에 하나인 조의 이용성 제고를 위하여 누룩 및 조 첨가량을 달리하여 제조한 발효주의 이화학적 특성을 검토한 결과 알코올 함량은 처리구간에 유의적인 차이를 보이지 않았다. 당도는 조 첨가량이 증가함에 따라 감소하는 경향을 보였다. 발효주 특유의 단맛을 위해 30% 정도의 조를 첨가하는 것이 양호할 것으로 여겨졌다. pH는 조 첨가량이 증가함에 따라 SH 업체 누룩을 이용한 발효주는 약간 감소하는 경향을 보였고 BS 업체 누룩은 증가하는 것으로 나타났으며, 산도는 pH와 반대의 경향을 보였다. 탁도는 조 첨가량이 증가함에 따라 감소하는 경향을 보여 맑아지는 것을 확인할 수 있었다. 조 첨가량에 따라 L 및 b-value는 감소하는 경향을 보였으며, a-value는 증가하는 경향을 보였고 색차(${\Delta}Eab$)는 증가하는 것으로 나타났다. 발효주의 유기산은 oxalic acid, lactic acid 및 acetic acid가 주를 이루었고 유리당은 glucose만이 검출되었고 조 첨가량이 증가함에 따라 대체적으로 감소하는 경향을 보였다. 관능검사결과 조를 첨가할 경우 선호도가 감소하는 것으로 나타났으나, BS업체 누룩을 이용하여 조를 70% 첨가한 발효주가 가장 양호한 관능적 특성을 보였다.

Keywords

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