Variability in the production of amylase by three isolates ofMyrothecium roridum |
| |
Authors: | P B Reddy S M Reddy |
| |
Institution: | (1) Department of Botany, Kakatiya University, 506 009 Warangal, India |
| |
Abstract: | Amylase production by three isolates ofMyrothecium roridum under different cultural conditions was studied. Starch followed by dextrin induced maximum amylase production (dextrinizing
and saccharifying) by all the three isolates. Glucose was a poor substrate for the production of amylases. Bitter gourd isolate
was a comparatively more efficient producer of amylases than the other two isolates. Addition of glucose to the starch medium
resulted in a repression of amylases. Urea was a good source of nitrogen for induction of dextrinizing amylase in bitter gourd
and pearl millet isolates.l-Asparagine,l-tyrosine were good sources of nitrogen for induction of saccharifying amylase in bitter gourd, water melon and pearl millet
isolate, respectively. With a few exceptions, dextrinizing amylase production was inhibited by gibberellic acid, cycocel,
calcium chloride and calcium sulfate, while these substances stimulated saccharifying-amylase production. No correlation could
be observed between amylase production and vegetative growth. Amylases of all the three isolates ofM. roridum were characterized. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|