9.2 Monitoring the reaction 153
Figure 1. Silver-ion HPLC chromatogram of the 12–h reaction mixture [see Equation (1)] by two
different lipases (Han et al., 1999a). (a) Reaction mixture by Lipozyme; (b) Reaction mixture by Lipo-
sam. Peak number is identical to that shown in Table 2. Molecular ion and fragmentation of peaks 3 and 4
analyzed by HPLC-APCI/MS are also shown.