Green and economical production of propionic acid by Propionibacterium freudenreichii CCTCC M207015 in plant fibrous-bed bioreactor

An economical biorefinery process for propionic acid production from glycerol and potato juice using high cell density fermentation

“…The fermentation was started with an initial cell density of 8.8 g CDW L -1 . In the initial two batches, 50 g L -1 glycerol was consumed as described in Most industrial and agricultural by-products that have been utilized as N-source were considered to be poor growth media, and required pre-treatment, either chemically or enzymatically, and/or supplementation with other N-additives for enhancing fermentation kinetics (Colomban et al, 1993;Feng et al, 2011). In the process proposed here, the heattreated potato juice alone was sufficient for the whole process.…”

<b>Inoculum concentration and inoculation time for propionic acid production from whey using mixed culture of <i>Lactobacillus helveticus</i> and <i>Propionibacterium freudenreichii</i> PS-1

“…) was lower than the best results published in the literature (Feng et al, 2010, Feng et al, 2011, Liu, Zhang, Zhang, Zhang, & Zhu, 2011, Zhu et al, 2012 with the use of other substrates, the results can motivate the use of skimmed whey as a low-cost substrate for the purpose of propionic acid production, using a pH control strategy.…”

Bio-produced Propionic Acid: A Review

“…The highest value for final propionic acid production was 91.89 g*L -1 , which was achieved over 254 hours. The propionic acid yield was 0.46 g*g -1 and productivity 0.36 g*L -1 *h -1 [45].…”

“…The long fermentation time resulted in low propionic acid productivity (0.04 g*L -1 *h -1 ) contrary to the highest propionic acid titre (106 g*L -1 ) [3]. The second highest propionic acid titre in Table 2 was 91.89 g*L -1 [45]. In this study Propionibacterium freudenreichii CCTCC M207015 was used.…”