| 摘要 |
PURPOSE:To immobilize lipase which catalyses important reactions in the oil and fat industry, e.g. hydrolysis, esterification, ester-exchange, etc., in high efficiency, by using a carrier composed of a porous solid and a chitosan derivative. CONSTITUTION:Lipase is immobilized to a carrier composed of a porous solid and a chitosan derivative and prepared by dispersing the porous solid in a gelled chitosan derivative and drying the dispersion. The porous solid is selected from florisil, diatomaceous earth, Celite, silica gel, China clay, corn cob, and sawdust or their mixture, and the chitosan derivative is selected from chitosan, N- acylchitosan, N-(mixed acyl)chitosan, N,O-acylchitosan, N-allylidenechitosan, N-alkylidenechitosan, a chitosan salt, their partial reaction product, or their mixture.
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