Amylase activity was assayed by measuring the
reducing sugar formed by the enzymatic hydrolysis of
soluble starch. The reaction mixture containing 1 ml
of1% (w/v) soluble starch in citrate phosphate buffer
(pH 6.5) and 1 ml culture extract enzyme was
incubated at 400 C for 30 min. The reaction was
stopped by addition of 2 ml of dinitrosalicylic acid
(DNS) reagents. The reaction mixture was heated for
5 min in boiling water bath and absorbance was read
at 540 nm to estimate reducing sugars released. The
activity of amylase enzyme was determined as IU/ ml
Enzyme activity was calculated from the amount of
reduced suga