Claims
- 1. An immobilized water-insoluble biocatalyst in particulate form consisting essentially of living cells in a gelling agent comprising gelatin which is cross-linked with a cross-linking agent, the biocatalyst being further characterized in that at least part of the water is removed from the cross-linked particles to give a dry matter content of at least 15%.
- 2. A biocatalyst according to claim 1 wherein the living cells are selected from the group consisting of yeasts, bacteria and plant cells, or mixtures thereof.
- 3. A biocatalyst according to claim 1 wherein the living cells are dispersed in conjunction with one or more enzymes which are compatible with the living cells and the gelling agent.
- 4. A biocatalyst according to claim 3 wherein the enzymes are selected from the group consisting of amyloglucosidase, lactase, maltase, amylase, glucose isomerase, pullulanase, invertase, lipase, esterase, glucose oxidase, glucose dehydrogenase, cellulase, hemicellulase and xylanase.
- 5. A biocatalyst according to claim 1 wherein the living cells are an ethanol sensitive strain of S. cerevisiae having a D-value (the time required to kill 90% of the living cells at 58.degree. C.) of more than 25 seconds.
- 6. A biocatalyst according to claim 1 which comprises viable S. cerevisiae cells optionally in conjunction with amyloglucosidase dispersed in cross-linked gelatin.
- 7. A biocatalyst according to claim 1 wherein the living cells are a thermophilic strain of S. cerevisiae capable of sustained growth in yeast extract/peptone/glucose at a temperature in excess of 40.degree. C.
- 8. A biocatalyst according to claim 7 wherein the thermotolerant strain is S. cerevisiae CBS 252.86.
- 9. A biocatalyst according to claim 6 wherein the viable cells are of the strain S. cerevisiae CBS 253.86.
Priority Claims (2)
Number |
Date |
Country |
Kind |
85-201883.7 |
Nov 1985 |
EPX |
|
86-304578.7 |
Jun 1986 |
EPX |
|
PRIOR APPLICATION
This application is a continuation-in-part of U.S. patent application Ser. No. 088,849 filed Jul. 8, 1987, now abandoned.
US Referenced Citations (11)
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
88849 |
Jul 1987 |
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