Department of Microbiology, University of Nigeria, Nsukka, Nigeria.
World J Microbiol Biotechnol. 1996 Nov;12(6):637-8. doi: 10.1007/BF00327728.
Thermoactinomyces thalpophilus produced a raw-starch digesting amylase (RSDA) when grown on both cereal and tuber starches. Glucose, maltose and glycerol repressed enzyme production. Highest activity was recorded on rice starch (39 U ml(-1)). Considerable variability existed in the effectiveness of nitrogenous nutrients to stimulate expression of RSDA. Multiple pH optima for RSDA production and activity suggests enzyme heterogeneity.
嗜热放线菌在谷物淀粉和薯类淀粉上生长时会产生一种生淀粉消化酶（RSDA）。葡萄糖、麦芽糖和甘油会抑制酶的产生。在大米淀粉上（39 U/ml(-1))记录到的酶活性最高。含氮营养物质对 RSDA 表达的刺激效果存在很大差异。RSDA 产生和活性的多个 pH 最佳值表明酶的异质性。
