Consistent 1,3-propanediol production from glycerol in mixed culture fermentation over a wide range of pH.

ABSTRACT:

Background

Glycerol is currently an over-produced chemical that can be used as substrate for the production of high value products such as 1,3-propanediol (1,3-PDO) in fermentation processes. The aim of this study was to investigate the effect of initial pH on a batch mixed culture fermentation of glycerol, considering both the bacterial community composition and the fermentation patterns.

Results

For pH values between 5 and 9, 1,3-PDO production yields ranged from 0.52 ± 0.01 to 0.64 ± 0.00 [Formula: see text], with the highest values obtained at pH 7 and 8. An Enterobacteriaceae member closely related to Citrobacter freundii was strongly enriched at all pH values. Within the less dominant bacterial species, two different microbial community structures were found, one at ac

SUBMITTER: Moscoviz R 

PROVIDER: S-EPMC4744455 | biostudies-literature | 2016

REPOSITORIES: biostudies-literature