Changes in pH, Acidity, Organic Acid and Sugar Content of Dough for Jeungpyun During Fermentation

발효과정 중 증편 반죽의 pH, 산도, 유기산 및 당함량의 변화

Physicochemical Properties of dough for Jeungpyun(Korean steamed rice cake) were analyzed during fermentation in the ranges of 0 to 10 hours. As fermentation time went by, pH of Jeungpyun dough was decreased while its titratable acidity and lactic acid content were increased continuously. Total sugar content was decreased continuously during fermentation. Reducing sugar content was increased greatly at the early stage of fermentation, reaching maximum value, 101 mg/g-dry matter at 4 hours, but it was decreased thereafter.

발효시간을 $0{\sim}10$시간으로 달리한 증편 반죽에서 발효시간에 따른 이화학적 성질 변화를 검토하였다. 발효경과에 따라 pH는 감소하였으나 적정산도와 젖산은 계속적으로 증가하였다. 발효 중 총당은 계속적으로 감소하였으나 환원당은 발효초기 크게 증가하여 발효 4시간에 건물 기준으로 최대 101 mg/g에까지 도달한 다음 다시 감소하였다.