*3.8. Optimization of DHEA Converted to 7β-OH-DHEA by Absidia Coerulea CICC 41050* 3.8.1. Effect of the Type and Concentration of Cosolvent on Transformation Rate

Take 1 mL ethanol, acetone, ethyl acetate, dimethyl sulfoxide, and chloroform as cosolvent, respectively; dissolve 50 mg DHEA in the cosolvent, add the transformation medium, and use no cosolvent in the control group to calculate the transformation rate.
