Claims
- 1. A process for oxidation of a C.sub.1 and/or C.sub.2 and/or C.sub.3 and/or C.sub.4 and/or C.sub.5 and/or C.sub.6 hydroxy group of a sugar monomer of a starch, said process comprising contacting, in an aqueous medium, the starch with a laccase and an enhancing agent, under conditions in which said oxidation results in formation of a carbonyl or carboxylate group.
- 2. A process according to claim 1, wherein said oxidation is of the C.sub.6 hydroxy group.
- 3. A process according to claim 1, wherein the aqueous medium additionally comprises an enhancing agent selected from the group consisting of N-hydroxybenzotriazole, Violuric acid, N-hydroxyacetanilide and TEMPO.
- 4. The process according to claim 1, wherein the laccase is obtainable from Trametes, Coprinus, or Myceliophthora.
- 5. The process according to claim 1, wherein the concentration of the laccase corresponds to 0.01-100 mg of enzyme protein per g of starch.
- 6. The process according to claim 1, wherein the enhancing agent in the aqueous medium is present in concentrations of from 0.01 to 100 mmole per g starch.
Priority Claims (1)
Number |
Date |
Country |
Kind |
1997 01491 |
Dec 1997 |
DKX |
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CROSS-REFERENCE TO RELATED APPLICATIONS
This application is a continuation of application Ser. No. PCT/DK98/00563 filed on Dec. 18, 1998 and claims priority under 35 U.S.C. 119 of Danish application serial no. PA 1997 01491 filed Dec. 19, 1997 and U.S. provisional application serial No. 60/068,647 filed on Dec. 23, 1997, the contents of which are fully incorporated herein by reference.
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Continuations (1)
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Number |
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Parent |
PCTDK9800563 |
Dec 1998 |
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