Journal
BIORESOURCE TECHNOLOGY
Volume 207, Issue -, Pages 346-352Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2016.02.007
Keywords
D-Lactic acid; Sporolactobacillus inulinus; Cottonseed meal; Corncob residue
Funding
- National Basic Research Program of People's Republic of China [2011CB707405]
- Specialized Research Fund for Doctoral Program of Higher Education of China [20123221120004]
- Natural Science Foundation of Jiangsu [BK20141456]
Ask authors/readers for more resources
D-Lactic acid, is an important organic acid produced from agro-industrial wastes by Sporolactobacillus inulinus YBS1-5 was investigated to reduce the raw material cost of fermentation. The YBS1-5 strain could produce D-lactic acid by using cottonseed meal as the sole nitrogen source. For efficient utilization, the cottonseed meal was enzymatically hydrolyzed and simultaneously utilized during D-lactic acid fermentation. Corncob residues are rich in cellulose and can be enzymatically hydrolyzed without pretreatment. The hydrolysate of this lignocellulosic waste could be utilized by strain YBS1-5 as a carbon source for D-lactic acid production. Under optimal conditions, a high D-lactic acid concentration (107.2 g/L) was obtained in 7-L fed-batch fermenter, with an average productivity of 1.19 g/L/h and a yield of 0.85 g/g glucose. The optical purity of D-lactic acid in the broth was 99.2%. This study presented a new approach for low-cost production of D-lactic acid for an industrial application. (C) 2016 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available