Davis P E, Cohen D L, Whitaker A
Antonie Van Leeuwenhoek. 1980;46(4):391-8. doi: 10.1007/BF00421985.
The production of alpha-amylase (alpha-1,4-glucan 4-glucanohydrolase; EC 3.2.1.1) by a strain of Bacillus stearothermophilus isolated from leaf litter was investigated in a tryptone-maltose medium at 55 degrees C in batch and chemostat culture. Amylase production was growth-limited and restricted to the exponential phase in batch culture. The enzyme yield was reduced by 40% when the culture pH was maintained at pH 7.2. Amylase production in chemostat culture was influenced by the growth rate throughout the dilution rate range used.
对从落叶层分离出的嗜热脂肪芽孢杆菌菌株在胰蛋白胨-麦芽糖培养基中于55℃进行分批培养和恒化器培养时α-淀粉酶（α-1,4-葡聚糖4-葡聚糖水解酶；EC 3.2.1.1）的产生情况进行了研究。在分批培养中，淀粉酶的产生受生长限制，且仅限于指数生长期。当培养物pH维持在7.2时，酶产量降低了40%。在整个使用的稀释率范围内，恒化器培养中的淀粉酶产生受生长速率的影响。
