Gc. Uguru et al., THE USE OF SORGHUM FOR THERMOSTABLE AMYLASE PRODUCTION FROM THERMOACTINOMYCES-THALPOPHILUS, Letters in applied microbiology, 25(1), 1997, pp. 13-16
Thermoactinomyces thalpophilus isolated from flour mill wastes was fou
nd to produce extracellular amylase in shake flask cultures using sorg
hum as carbon source. Sorghum in mineral salts medium significantly su
pported a higher rate of amylase synthesis by the organism than solubl
e starch, giving peak amylase activity at the stationary phase. The op
timum temperature and pH of the enzyme was 90 degrees C and 5.0, respe
ctively, with more than 50% enzyme activity retained at 100 degrees C
(30 min).