摘要:
The present invention relates to a method for selectively producing ginsenoside F2, compound Mc or compound O, which is originally present in ginseng in a trace amount, from a saponin of ginseng, and more specifically to a method capable of obtaining desired target compounds, that is, ginsenoside F2, compound Mc and compound O, in high yields, by treating saponins, obtained from ginseng, with particular enzymes to structurally convert the saponins.
摘要:
A novel method of synthesis for the manufacture of upstream products for the production of compounds with general formulas 8, 10, and 12 is described. In this synthesis, compounds with general formula 4,B are produced in a microbiological reaction. The meanings of R7, R10, R11, R13, R17 and R17′ as well as of the grouping U—V—W—X—Y-Z are indicated in the claims.
摘要:
Disclosed are a composition for production of ginsenoside compound K using a high temperature-β-glycosidase and a high temperature-α-L-arabinofuranosidase, and a method for preparing ginsenoside compound k. The composition for producing ginsenoside compound k and the method for preparing ginsenoside compound k according to one aspect of the present invention allow high temperature-βglycosidase and high temperature-a-L-arabinofuranosidase to exhibit stable activity even at high temperatures, thereby increasing a reaction rate. The composition for producing ginsenoside compound k and the method for preparing ginsenoside compound k according to one aspect of the present invention allow a large quantity of ginsenoside compound k to be produced in a short time, thereby exhibiting an effect of producing a high yield, and thus can be utilized industrially.
摘要:
The invention relates to optimised micro-organism strains for the biotransformation production of molecules having NADPH-consuming biosynthetic pathways. The inventive strains can be used in NADPH-consuming biotransformation methods. Said strains are characterised in that one or more NADPH-oxidising activities are limited.
摘要:
The present invention relates to a method for selectively producing compound K and compound Y, which are originally present in ginseng in a trace amount, from saponins of ginseng, and more specifically to a method capable of obtaining desired target compounds, that is, compound K and compound Y, in high yields, by treating saponins, obtained from ginseng, with particular enzymes to structurally convert the saponins.
摘要:
One embodiment of the present invention discloses a method for continuous biotransformation. The method is continuously supplying viable biocatalyst cells or biocatalyst biomolecules to a bioreactor containing substrate mediums, so as to mediate the substrate mediums to be converted into the desired bioproducts.
摘要:
A novel method of synthesis for the manufacture of upstream products for the production of compounds with general formulas 8, 10, and 12 is described. In this synthesis, compounds with general formula 4,B are produced in a microbiological reaction. The meanings of R7, R10, R11, R13, R17 and R17′ as well as of the grouping U-V-W-X-Y-Z are indicated in the claims.
摘要:
The present invention relates to a method for selectively producing ginsenoside Rd, which is originally present in ginseng in a trace amount, from panaxadiol-type saponins of ginseng, and more specifically to a method capable of obtaining a desired target compound, that is, ginsenoside Rd, in high yields, by treating a panaxadiol-type saponin obtained from ginseng, with particular enzymes to structurally convert the saponins.
摘要:
A process for the enantioselective enzymatic reduction of compounds which comprise a steroid structure (ABCD) including one or several heteroatoms, one or several double bonds and/or one aromatic component in the ring structure and have at least one oxo group at position 3, 7, 11, 12 or 17 in the steroid ring system or in the α-position at any carbon moiety on the steroid skeleton (=oxosteroid compound), wherein the oxosteroid compound is reduced with a hydroxysteroid dehydrogenase in the presence of a cofactor NADH or NADPH, is characterized in that a) the oxosteroid compound is provided in the reaction at a concentration of ≧50 g/l, b) the oxidized cofactor NAD or NADP formed by the hydroxysteroid dehydrogenase is regenerated continuously by oxidation of a secondary alcohol of general formula RXRYCHOH, wherein RX, RY independently represent hydrogen, a branched or unbranched C1-C8-alkyl and Ctotal≧3, or by oxidation of a C4-C6-cycloalkanol, and c) an additional oxidoreductase/alcohol dehydrogenase is used for the oxidation of the secondary alcohol of general formula RXRYCHOH or of the cycloalkanol, respectively.
摘要:
A novel method of synthesis for the manufacture of upstream products for the production of compounds with general formulas 8, 10, and 12 is described. In this synthesis, compounds with general formula 4,B are produced in a microbiological reaction. The meanings of R7, R10, R11, R13, R17 and R17′ as well as of the grouping U—V—W—X—Y—Z are indicated in the claims