Food Science and Preservation (한국식품저장유통학회지)

The Korean Society of Food Preservation (한국식품저장유통학회)
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Quality characteristics of whey Makgeolli by Kluyveromyces marxianus

Kluyveromyces marxianus에 의한 유청막걸리 품질특성

  • Kim, Su-Hwan (Department of Food Science and Technology, Sunchon National University) ;
  • Huh, Chang-Ki (Imsil Institute of Cheese Science) ;
  • Kim, So-Mang (Department of Food Science and Technology, Sunchon National University) ;
  • Cho, In-Kyung (Department of Food and Nutrition, Nambu University) ;
  • Kim, Yong-Doo (Department of Food Science and Technology, Sunchon National University)
  • Received : 2015.03.09
  • Accepted : 2015.07.24
  • Published : 2015.08.30
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Abstract

This study was performed to analyze the processing and quality characteristics of whey Makgeolli prepared with different types of yeast and ratio of the whey content. Lactose content of yeast culture medium containing S. cerevisiae. was 1.36% whereas lactose content of yeast culture containing K. marxianus KCCM 12015 was very little. Yeast culture of both K. marxianus KCCM 35455 and K. marxianus KCCM 50700 did not produce lactose. Until the 10th day, ethanol production ability of S. cerevisiae, K. marxianus KCCM 12015, K. marxianus KCCM 35455, and K. marxianus KCCM were 0.31%, 2.51%, 2.53%, and 2.59%, respectively. Total acids content increased rapidly with the increase in the addition of whey content in the initial 2 days and then decreased during 4~10 days of fermentation. In the aspect of pH, the pH was rapidly decreased in the initial 2 days and then increased until 10th day of fermentation with the increase in whey content. Ethanol content of whey Makgeollis at 10th day of fermentation was the highest in yeast culture containing K. marxianus. From the sensory evaluation, the flavor score of whey Makgeollisin was higher than that of control. The color and taste scores were increased as the increase in the addition of whey. The comprehensive preference indicated that Makgeolli prepared with 100% whey was the best among other samples.

유청을 막걸리 제조시 용수로 사용하기 위해 효모에 따른 유당 분해능과 ethanol 생성능력을 측정하고, 유청 첨가 비율에 따른 막걸리를 제조하여 총산, pH, 환원당, ethanol 및 관능평가 등 품질특성을 확인한 결과는 다음과 같다. 유당 분해능은 K. marxianus KCCM 35455과 K. marxianus KCCM 50700이 가장 뛰어난 유당 분해능을 보였으며, ethanol 생성능력은 K. marxianus KCCM 50700 균주의 ethanol 함량이 가장 높은 것으로 나타났다. 따라서 유당분해능과 ethanol 생성능이 우수했던 K. marxianus KCCM 50700의 효모를 선정하여 유청 막걸리 제조 연구를 진행하였다. 유청 첨가비율에 따른 막걸리의 발효과정 중 총산은 K. marxianus KCCM 50700으로 담금한 시료구의 경우 S. cerevisiae로 담금한 막걸리의 산도보다 비교적 낮은 경향을 보였으며, pH는K. marxianus KCCM 50700로 담금한 시료구의 경우 S. cerevisiae로 담금한 막걸리의 pH보다 비교적 높은 경향을 보였다. 환원당 함량은S. cerevisiae 시료구에서는 유청 첨가비율이 높아짐에 따라 환원당 함량이 높아졌으며, K. marxianus KCCM 50700 시료구에서는 큰 함량차이가 나타내지 않았다. ethanol 함량 변화는K. marxianus KCCM 50700로 담금한 시료구가 S. cerevisiae로 담금한 시료구 보다 높게 나타났다. 관능평가는 향, 색, 맛 및 종합기호도면에서 K. marxianus KCCM 50700로 담금한 유청 100% 첨가 시료구가 높은 기호도를 보였다.

Keywords

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