Fig. (1) A. Heat map of the L-asparaginase activity of seven Actinobacteria with different carbon sources. Each result is the mean with n = 3. The positive control is C+ (Glucose) and negative control is C- (without carbon source). B. Heat map of the L-asparaginase activity of seven Actinobacteria with different sources of nitrogen and lactose as a carbon source. Each result is the mean with n = 3. The positive control is C+ (L-asparagine) and negative control is C- (without nitrogen source).