Abstract
A new approach in biotechnological processes is to use lipase modified with polyethylene glycol(PEG) which has both hydrophilic and hydrophobic properties. The PEG-lipase is soluble in organic solvents such as benzene and chlorinated hydrocarbons and exhibits high enzymic activity in organic solvents. The PEG-lipase catalyses the reverse reaction of hydrolysis in organic solvents; ester synthesis and ester exchange reactions. The PEG-lipase can also be conjugated to magnetite (Fe3O4). The magnetic lipase catalyses ester synthesis in organic solvents and can be readily recovered by magnetic force without loss of enzymic activity.
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