Method for preparing 1, 3-propylene glycol through biotransformation
The invention relates to a method for preparing 1, 3-propylene glycol through biotransformation, which is characterized in that the fermentation process is divided into an initial fermentation stage, a fermentation adjustment stage and a later fermentation stage, the initial fermentation stage refer...
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| creator | FAN YACHAO SHI WENJING ZHANG LIN |
| description | The invention relates to a method for preparing 1, 3-propylene glycol through biotransformation, which is characterized in that the fermentation process is divided into an initial fermentation stage, a fermentation adjustment stage and a later fermentation stage, the initial fermentation stage refers to inoculating a zymophyte seed solution into a fermentation culture medium, and fermentation culture is started under a micro-aerobic condition; the fermentation adjustment period refers to adding yeast liquid when the production rate of the 1, 3-propylene glycol is lower than 1g. L . H along with fermentation, and switching back to the culture mode of the initial fermentation period after the concentration of the symbolic by-product is reduced to a certain degree, and the time is the later fermentation period until the fermentation is finished. According to the method disclosed by the invention, the problem of by-product inhibition in a micro-aerobic mode is solved by utilizing exogenous substrate le |
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L <-1 >. H <-1 > along with fermentation, and switching back to the culture mode of the initial fermentation period after the concentration of the symbolic by-product is reduced to a certain degree, and the time is the later fermentation period until the fermentation is finished. 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L <-1 >. H <-1 > along with fermentation, and switching back to the culture mode of the initial fermentation period after the concentration of the symbolic by-product is reduced to a certain degree, and the time is the later fermentation period until the fermentation is finished. 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L <-1 >. H <-1 > along with fermentation, and switching back to the culture mode of the initial fermentation period after the concentration of the symbolic by-product is reduced to a certain degree, and the time is the later fermentation period until the fermentation is finished. According to the method disclosed by the invention, the problem of by-product inhibition in a micro-aerobic mode is solved by utilizing exogenous substrate le</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | BEER BIOCHEMISTRY CHEMISTRY COMPOSITIONS THEREOF CULTURE MEDIA ENZYMOLOGY FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIREDCHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERSFROM A RACEMIC MIXTURE METALLURGY MICROBIOLOGY MICROORGANISMS OR ENZYMES MUTATION OR GENETIC ENGINEERING PROCESSES USING MICROORGANISMS PROPAGATING, PRESERVING OR MAINTAINING MICROORGANISMS SPIRITS VINEGAR WINE |
| title | Method for preparing 1, 3-propylene glycol through biotransformation |
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