Coated enzyme-containing catalyst

Details Coated enzyme-containing catalyst Coated enzyme-containing catalyst

2007-07-24

2007-07-24

Naff, David M. (Department: 1657)

Chemistry: molecular biology and microbiology

Micro-organism, tissue cell culture or enzyme using process...

Preparing oxygen-containing organic compound

C435S176000, C435S182000, C435S187000, C435S188000, C435S455000

Reexamination Certificate

active

10311951

ABSTRACT:
An enzymatic catalyst in the granular form which is non-dispersible in water comprising an inner core provided with a coating which coating comprises an enzymatic material characterised in that the coating has a thickness of from 30 to 400 microns and the ratio of the size of the core to the thickness of the coating is from 2 to 20. A method for the preparation of the catalyst and the use of the catalyst in the conversion of 2-hydroxy-4-methylthio butyronitrile to ammonium 2-hydroxy-4-methylthio butanoate is also claimed.

REFERENCES:
patent: 6180359 (2001-01-01), Favre-Bulle et al.
patent: 6214592 (2001-04-01), Crouzet et al.

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