Method for controlling air quantity during production of 1,3-propylene glycol

The invention discloses a method for controlling air quantity during the production of 1,3-propylene glycol, which is operated according to the following process steps of: (1) introducing the air quantity of 500 l/hour for about 8 hours of a primary fermentation stage to ensure thalli to be fast gro...

Full description

Saved in:
Bibliographic Details
Main Authors GE JIN, WANG QINGPEI, SUN PEIYONG, DU FENGGUANG, MA HUANXIN, HE CHENYANG
Format Patent
LanguageChinese
English
Published 31.10.2012
Subjects
BEER
BIOCHEMISTRY
CHEMISTRY
ENZYMOLOGY
FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIREDCHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERSFROM A RACEMIC MIXTURE
METALLURGY
MICROBIOLOGY
MUTATION OR GENETIC ENGINEERING
SPIRITS
VINEGAR
WINE
Online AccessGet full text

Cover

More Information
Summary:The invention discloses a method for controlling air quantity during the production of 1,3-propylene glycol, which is operated according to the following process steps of: (1) introducing the air quantity of 500 l/hour for about 8 hours of a primary fermentation stage to ensure thalli to be fast grown and achieve a higher bacterial concentration level of OD650=8; (2) then decreasing the air quantity to 200-300 l/hour, wherein the successive high yield of 3-hydroxy propanal is stimulated at the small air quantity time of 12 hours; and (3) increasing the air quantity again to 500 l/hour, wherein fermentation is completed at the large air quantity time of 16 hours. In the invention, the air quantity is duly regulated by adopting appropriate frequency according to different characteristics of stages in a fermentation process, thereby most effectively achieving the fermentation effect of much 3-hydroxy propanal and little lactic acid; convenience for separation and lower cost are achieved; and the yield of the 1,3
Bibliography:Application Number: CN20111195612