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Yeast Selection for Quality Optimization of Distilled Spirits

증류주의 품질 최적화를 위한 효모선발 연구

  • Choi, Sung-Inn (Dept. of Convergence Industry, Seoul Venture University) ;
  • Kang, Soon Ah (Dept. of Conversing Technology, Graduate School of Venture, Hoseo University) ;
  • Cheong, Chul (Dept. of Convergence Industry, Seoul Venture University)
  • Received : 2013.06.24
  • Accepted : 2013.08.07
  • Published : 2013.08.31

Abstract

The aim of this study was to select yeast strain for quality optimization of distilled spirit which is prepared using rice. Five yeasts strains were compared for their brewing characteristics and showed normal fermentation pattern, but songcheon yeast(Y1) and distillery yeast(Y5) revealed higher fermentation ability than other samples tested. The analyzed results of fermented mashing showed that the distillery yeasts(Y4, Y5) had significantly much higher alcohol content, and songcheon yeast(Y1), distillery yeasts(Y4, Y5) had significantly higher ester content than other samples tested respectively, while the distillery yeasts(Y3, Y4, Y5) had significantly higher organic acid content than other samples tested. The analyzed results of distilled spirits which were distilled using copper distillery apparatus showed that the songcheon yeast(Y1) and distillery yeast(Y5) had a higher yield compared to other samples tested. In addition, the results of the aroma compounds such as ester and higher alcohol of distilled spirits among the five yeasts tested were similar to the analyzed results of fermented mashing. Siha aktivhefe 6 brennereihefe(Y5) indicated the highest overall preference including sensory evaluation and was selected as best yeast strain for quality optimization of distilled spirit which is prepared using rice.

본 연구의 목적은 쌀을 원료로 하여 증류주 제조시 쌀 특성에 적합한 최적의 증류주 효모를 선발하는데 있다. 사용된 5종류의 효모는 전반적으로 정상적인 발효패턴을 보였으나 송천효모(Y1)와 증류주 효모(Y5)가 다른 효모에 비해 우수한 발효력을 보였다. 또한 발효후 술덧을 분석한 결과 고급알코올은 증류주 효모(Y4, Y5)에서, 에스터는 송천효모(Y1)와 증류주효모(Y4, Y5)에서 유의적으로 높게 검출된 반면, 유기산 함량은 증류주 효모(Y3, Y4, Y5)에서 유의적으로 높게 나타났다. 발효술덧을 동증류기를 이용한 상압증류한 증류주 분석 결과 송천효모(Y1)와 증류주 효모(Y5)가 최종 알코올 농도가 높아 제조수율에 유리한 것으로 판단되며, 고급알코올과 에스터 등 향기 성분은 발효술덧 분석 결과와 같이 고급알코올은 증류주 효모(Y4, Y5)에서, 에스터는 송천효모(Y1)와 증류주 효모(Y4, Y5)에서 유의적으로 높게 나타나 발효술덧의 향기 패턴이 증류주에 대부분 전이되는 것으로 판단된다. 효모별 발효특성과 발효술덧 및 증류주의 물리화학적 특성, 관능평가를 종합한 결과 증류주 효모인 siha aktivehefe 6 brennereihefe(Y5)가 쌀을 이용한 증류주 품질 최적화에 가장 적합한 효모로 선발되었다.

Keywords

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