Applied Biological Chemistry
- Volume 18 Issue 1
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- Pages.1-9
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- 1975
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- 2468-0834(pISSN)
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- 2468-0842(eISSN)
A Study on the Manufacturing of Soysauce by the Combined use of Aspergillus sojae and Bacillus subtilis
단백질분해세균(蛋白質分解細菌)을 병용(倂用)한 간장제조(製造)에 관(關)한 연구(硏究)
- Kim, Ze-Uook (College of Agriculture, Seoul National University) ;
- Cho, Sung-Hwan (College of Agriculture, Seoul National University)
- Published : 1975.03.31
Abstract
In order to study on the preparation of improved soysauce, Koji(soybean and wheat mash fermented by the strain Aspergillus sojae), Koji-Natto(mixed with the various proportion of Koji to Natto; 8 : 2, 6 : 4, 4 : 6, 2 : 8) and Natto (prepared using the strain: Bacillus subtilis) were prepared as soysauce materials. Sensory evaluation for the soysauces made from above-mentioned soysauce materials and the contents of total nitrogen, amino nitrogen, ammonia nitrogen, reducing sugar, total acid and enzyme activity were determined. The results were summarized as follows: 1. Protease activity of Natto was over twice higher than that of Koji and amylase activity of Koji was three times higher than that of Natto. Koji-Natto showed successive increase of amylase activity and successive decrease of protease activity as Koji proportion was increased to Natto. 2. The contents of total nitrogen and amino nitrogen in all the soysauce mashes displayed linear increases or no changes of these contents as aging. The contents of total nitrogen and amino nitrogen in the mahes were higher as Natto proportion increase to Koji during the aging period. 3. In Natto soysauce mash and Koji-Natto soysauce mashes the contents of ammonia nitrogen were gradually increased until
Aspergillus sojae를 사용(使用)하여 제조(製造)한 Koji와 Bacillus subtilis를 사용(使用)하여, 제조(製造)한 Natto의 배합비(配合比)를 달리하여, 그 효소역가(酵素力價)를 검토(檢討)하고 Koji와 Natto의 配合比를 10 : 0, 8 : 2, 6 : 4, 4 : 6, 2 : 8, 0 : 10으로 하여 담근 간장을 3개월간(個月間) 숙성(熟成)시키면서 숙성기간중(熟成期間中)의 화학성분변화(化學成分變化)를 조사(調査)하고 3개월간(個月間) 숙성(熟成)시킨 간장덧액(液)에 대하여 식미시험(食味試驗)을 행(行)하여 다음과 같은 결과(結果)를 얻었다. 1. Koji 제조중(製造中)의 pretense activity는 시간(時間)이 경과(經過)함에 따라 꾸준한 증가(增加)를 보여 60 시간(時間)에 가서 44 tyrosine
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