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4757012 |
Ascorbic acid intermediates and process enzymes
Recombinant plasmids containing the gene encoding 2,5-diketogluconic acid reductase are prepared and used to transform microorganisms. 2,5,DKG reductase is expressed by the microorganisms.
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4748122 |
2,5-diketo-D-gluconic acid reductase
A novel reductase is produced from a microorganism which belongs to genus Corynebacterium and is useful as a catalyst which catalizes, in the presence of NADPH, reduction of 2, 5-diketo-D-gluconic...
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4696897 |
Process for preparing 2-keto-L-gulonic acid
2-Keto-L-gulonic acid is prepared directly from D-glucose by microbial conversion utilizing mixed culturing on a medium containing D-glucose, employing two kinds of microorganisms; the first, a...
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4595659 |
Fermentation production of ascorbic acid from L-galactonic substrate
Processes for the fermentation production of L-ascorbic acid (Vitamin C), and to microorganisms (e.g., Candida Norvegensis MF-56, ATCC 20686) and fermentation media which are specifically adapted...
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4543331 |
Fermentative or enzymatic production of 2-keto-L-gulonic acid
Fermentative or enzymatic production of 2-keto-L-gulonic acid from 2,5-diketo-D-gluconic acid using living or processed mutants, being defective in metabolizing 5-keto-D-gluconic acid and incapable...
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4490467 |
Polysaccharide production using novel strains of Pseudomonas mendocina
A process for producing polysaccharide consisting of a partially acetylated variable block copolymer of D-mannuronic and L-guluronic acid residues comprises growing a biologically pure culture of a...
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4423149 |
Process for the production of D-glucosone
A process is described for the production of D-glucosone from glucose. An aqueous solution of glucose is converted substantially completely to D-glucosone by an enzymatic oxidation while removing...
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RE30872 |
Process for producing 2-keto-L-gulonic acid
2-Keto-L-gulonic acid is prepared from 2,5-diketo-D-gluconic acid through microbial conversion. The 2-keto-L-gulonic acid producing microorganism used for this microbial conversion includes strains...
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4259443 |
Synthesis of ascorbic acid from lactose
A method of synthesizing vitamin C (ascorbic acid) directly from the hydrolysis products of lactose. Lactose, economically obtained from whey, undergoes hydrolysis with a warm aqueous slurry of...
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4245049 |
Preparation of 2-keto-L-gulonic acid
2-Keto-L-gulonic acid, an ascorbic acid intermediate, is prepared by cultivating a microorganism of the genus Citrobacter in an aqueous nutrient medium in the presence of 2,5-diketo-D-gluconic acid.
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4155812 |
Fermentation process for converting L-gulonic acid to 2-keto-L-gulonic acid
L-gulonic acid as the calcium or sodium salt is converted to 2-keto-L-gulonate in high yield by means of a growing culture of selected strains of species of the genus Xanthomonas.
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3907639 |
Method for producing 2-keto-L-gulonic acid
The present invention relates to a microbiological method for producing 2-keto-L-gulonic acid, an important intermediate in the production of vitamin C, from L-sorbosone.
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3381027 |
Preparation and recovery of methyl 2-ketogluconate
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3282795 |
Production of 2-ketogluconic acid by serratia marcescens
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3255093 |
Conversion of glucose to 2-ketogluconic acid
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3234105 |
Method for producing 2-keto-lgulonic acid
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3043749 |
Preparation of 2-keto-l-gulonic acid
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2948659 |
Synthesis of 2-keto-l-gulonic acid
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2918492 |
Method of preparing methyl 2-ketogluconate
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2917435 |
Preparation of 2-keto-1-gulonic acid by pseudomonas aeruginosa
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