In this paper, we report the reactions of esterification and transesterification catalyzed by the following lipase adducts in organic solvents: (1) glass-adsorbed; (2) acetone precipitated on porous glass, kieselghur-adsorbed; (3) Al2O3-adsorbed; and (4) agar bead-adsorbed. The optimal water content varied for different forms of the enzymes. Under the most favorable conditions, kieselguhr-adsorbed and agar bead-adsorbed lipases, which have higher catalytic activities in organic solvents, are the best of all forms of lipases.