[논문]밑술 담금 방법을 달리한 탁주의 품질 특성

이대형; 서재순; 신복음; 이용선; 조창휘

doi:10.9721/kjfst.2021.53.5.640

밑술 담금 방법을 달리한 탁주의 품질 특성
Quality characteristics of takju by different method of rice pre-treated 원문보기

한국식품과학회지 = Korean journal of food science and technology, v.53 no.5, 2021년, pp.640 - 647

이대형 (경기도농업기술원 작물연구과) , 서재순 (경기도농업기술원 작물연구과) , 신복음 (경기도농업기술원 작물연구과) , 이용선 (경기도농업기술원 작물연구과) , 조창휘 (경기도농업기술원 작물연구과)

초록
AI-Helper

본 연구에서는 쌀 전처리 방법인 고두밥, 범벅, 죽으로 만드는 밑술 및 덧술의 발효 유형을 분석하여 품질이 향상된 다양한 탁주 개발의 기초 자료로 활용하고자 하였다. 밑술의 경우 알코올은 2일 후 고두밥에서 가장 높은 8.1%가 생성되었으며 다음으로 범벅, 죽 순이었다. 가용성 고형분(°Brix)는 발효 2일차에 죽, 고두밥, 범벅 순으로 15.3, 15.1, 1.4°Brix를 나타내었다. 고두밥의 glucose의 함량은 크게 변하지 않았으나 maltose 함량은 증가하였고 범벅의 경우 초기 0일차에는 maltose가 16.48 mg/mL에서 1.27 mg/mL로 감소하였다. 죽의 경우 0일에는 glucose와 maltose가 14.05, 11.49 mg/mL에서 2일차에는 31.39, 42.53 mg/mL로 증가하였다. 고두밥과 범벅 밑술에서 succinic acid가 증가하였으며 고두밥과 죽 밑술은 발효 초기에 검출이 안되었던 lactic acid가 분석된 반면 범벅 밑술에서는 lactic acid가 검출되지 않았다. 덧술 발효에서는 고두밥 밑술로 만든 탁주의 알코올이 9일에 18.0%로 가장 높았으며 범벅이 15.1%로 가장 낮았다. 산도는 범벅이 0.54%로 높았으며 죽은 0.41%, 고두밥은 0.39%를 나타내었다. 범벅의 총 유기산 증가가 가장 많았으며 고두밥의 총 유기산 증가가 가장 적었다. 향기에서는 고두밥의 경우 0일차에 높은 area %를 가졌던 ethyl caprate 및 ethyl caprylate가 9일 발효 완료시 감소하였으며 바나나향이 나는 isoamyl alcohol은 증가하였다. 죽의 경우도 유사하게 0일차에 높게 생성되었던 ethyl caprate, ethyl caprylate 등은 9일차에 감소하였으며 ethyl palmitate, ethyl linoleate 등의 향기 성분은 증가하였다.

Abstract ▼ AI-Helper

In this study, we analyzed three rice pre-treatment methods for the preparation of mit-sool (first mashing), with godubap (steamed rice), beombeok (undercooked porridge), and juk (porridge). The results can provide basic data for the development of takju with improved quality. In terms of the base alcohol, godubap produced the highest amount of alcohol (8.1%) after two days, followed by beombeok and juk. After two days of fermentation, soluble solids were measured at 15.3, 15.1, and 1.4°Brix in beombeok, juk, and godubap, respectively, The glucose content of godubap did not change significantly; however, the maltose content increased. In beombeok, maltose decreased from 16.48 mg/mL on the initial day 0 to 1.27 mg/mL on day 9. In juk, glucose and maltose increased from 14.05 and 11.49 mg/mL on day 0 to 31.39 and 42.53 mg/mL on day 2, respectively. Succinic acid levels increased in the godubap and beombeok mit-sool. However, succinic acid was not detected in godubap and juk during the initial stage of fermentation, and lactic acid was not detected in beombeok mit-sool. During the fermentation stage of deot-sool (second mashing), the highest alcohol content of takju made with godubap alcohol was 18.0% and the lowest alcohol content was 15.1% in beombeok on day 9. The total acidity was as high as 0.54% for beombeok, 0.41% for juk, and 0.39% for godubap. In the flavor analysis, ethyl caprate and ethyl caprylate, which were high on day 0 in godubap, decreased upon the completion of fermentation on day 9. Banana-flavored isoamyl alcohol content increased. For juk, ethyl caprate and ethyl caprylate, which were high on day 0, decreased on day 9. Flavor components, such as ethyl palmitate and ethyl linoleate were increased.

주제어

표/그림 (5)

표 Table 1. Change in alcohol content, soluble solid, reducing sugar, pH, and total acidity of different rice pre-treated during first mashing fermentation
표 Table 2. Change in free sugars and organic acids of different rice pre-treated during first mashing fermentation
표 Table 3. Change in free sugars and organic acids of different amount of water during second mashing fermentation
그림 Fig. 1. Changes of alcohol content, total acidity, soluble solid, and reducing sugar of different rice pre-treated during second mashing fermentation. ●: Godubap, ○: Beombeok, ▼: Juk. Each value is expressed as mean±SD (n=3).
표 Table 4. Volatile compounds obtained of different rice pre-treated during second mashing fermentation (unit: peak area %)

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