Production, Purification, and Characterization of Thermostable α-Amylase Produced by Bacillus licheniformis Isolate AI20

Figure 2

The response surface of α-amylase activity by Bacillus licheniformis AI20 as a function of (a), starch and yeast extract, (b), CaCl₂ and starch and (c), yeast extract and CaCl₂ in the culture environment.

(a)

(b)

(c)