Claims
- 1. A method of enhancing the yield of L-glucose from an aqueous mixture containing at lest about 40 percent by weight L-mannose on a dry solids basis and containing molybdate epimerization inhibitors, said mixture containing inhibitors arising from the hydrocyanation of L-arabinose, where the method comprises catalyzing the epimerization of L-mannose to L-glucose with a solution of a molybdate containing up to about 1500 parts per million molybdenum at a pH below 3.0 and at a temperature between about 75 and about 100.degree. C. for a time sufficient to give a ratio of L-glucose to L-mannose of at least 1.
- 2. The method of claim 1 where the aqueous mixture contains up to about 50% by weight dry solids.
- 3. The method of claim 1 where the aqueous mixture contains from about 40 to about 80% by weight mannose.
- 4. The method of claim 1 further characterized in that the aqueous mixture contains from about 2 to about 10% by weight arabinose.
- 5. The method of claim 1 where the epimerization is catalyzed by said molybdate at a concentration giving between about 200 and about 1,000 ppm molybdenum.
- 6. The method of claim 1 where the pH of epimerization is between about 1.3 and about 2.7.
CROSS-REFERENCE TO RELATED APPLICATION
This application is a continuation-in-part of our copending application Ser. No. 889,154, filed Jul. 25, 1986, now abandoned, all of which is incorporated by reference.
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3785864 |
Lauer et al. |
Jan 1974 |
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4471114 |
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
889154 |
Jul 1986 |
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