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Hydrolysis of different starch sources by PH-Gra1 amylase. A crude enzyme of PH-Gra1 was incubated with 0.5% starch from potato, corn, and wheat at 37 °C and 55 °C for 1 h. Amylolytic activity was presented by the mean and standard deviation of three biological replicates. “*” indicates differences that are statistically significant (p < .05) by t-test between 37 °C and 55 °C.
