논문 상세보기
pp.449-455
키위와 무를 첨가하여 42에서 72시간동안 발효시킨 검정콩 청국장의 pH, 총산, 환원당, 질소화합물 및 무기질 함량을 조사하였다. 검정콩 청국장의 발효중 pH는 증가하였고, 총산은 감소하였으며, 키위를 첨가한 검정콩 청국장을 제외한 시료구 모두 24시간 이후로 급격한 변화를 나타내었다. 환원당은 24시간을 전후하여 증가하다가 감소하였고, 검정콩 청국장은 가장 함량이 많았으며, 나머지 청국장은 비슷하였다. 아미노태 질소는 발효 24시간 이후부터
Changes in pH, titratable acidity, reducing sugar, nitrogen compound and mineral of black bean chungkugjang(BBC)added with kiwi and radish during fermentation were investigated. During fermentation of BBC, pH was increased, while titratable acidity was decreased. The changes in pH and titratable acidity of all chungkugjangs other than BBC were very rapid after 24 hrs of fermentation. Reducing sugar content was highest in BBC and was increased by 24 hrs of fermentation and decreased thereafter. Amino-type nitrogen increased rapidly after 24 hrs of fermentation. The addition of kiwi and radish increased the content of amino-type nitrogen in BBC by enhancing proteolysis of black bean, being as much as in soybean chungkugjang. At 72 hrs of fermentation BBC was found to be lower in ammonia type nitrogen than soybean chungkugjang. Mineral content, in general, was higher in BBC than in soybean chungkugjang, showing highest in potassium followed by phosphorus, magnesium and calcium.
