BioChem - DOS

Biorefinery development through utilization of biodiesel industry by-products as sole fermentation feedstock for 1,3-propanediol production

Bioresource technology : biomass, bioenergy, biowastes, conversion technologies, biotransformations, production technologies

Chatzifragkou, A.; Papanikolaou, S.; Kopsahelis, N.; Kachrimanidou, V.; Dorado, M.P.; Koutinas, A.A.

Rapeseed meal (RSM) hydrolysate was evaluated as substitute for commercial nutrient supplements in 1,3-propanediol (PDO) fermentation using the strain Clostridium butyricum VPI 1718. RSM was enzymatically converted into a generic fermentation feedstock, enriched in amino acids, peptides and various micro-nutrients, using crude enzyme consortia produced via solid state fermentation by a fungal strain of Aspergillus oryzae. Initial free amino nitrogen concentration influenced PDO production in batch cultures. RSM hydrolysates were compared with commercial nutrient supplements regarding PDO production in fed-batch cultures carried out in a bench-scale bioreactor. The utilization of RSM hydrolysates in repeated batch cultivation resulted in a PDO concentration of 65.5g/L with an overall productivity of 1.15g/L/h that was almost 2 times higher than the productivity achieved when yeast extract was used as nutrient supplement.

2014

Elsevier Applied Science

0960-8524

159

pp.167-175

10.1016/j.biortech.2014.02.021

http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=05787966&target=NART&cn=NART68981431

Biorefineries; Rapeseed meal hydrolysate; Crude glycerol; 1,3-Propanediol; Clostridium butyricum