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Laccase (E.C. 1.10.3.2) from Trametes versicolor was immobilized (adsorbed) by drying on various supports (glass, glass powder, silica gel, and Nylon 66 membrane). The enzyme activity and stability were determined in diethyl ether, ethyl acetate, and methylene chloride. The initial rate for the oxidation of syringaldazine varied up to 245-fold depending on the solvent and support, the best results...
Methyl β-cyclodextrin (MβCD) increased the activity and enantioselectivity of lyophilized subtilisin suspended in dry THF and acetonitrile in two transesterification model reactions. These beneficial improvements were diminished by the addition of water, in contrast to the observation that water activates subtilisin lyophilized from buffer alone. For example, the initial rate for the S enantiomer...
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