Evaluation of biobutanol production from non-pretreated rice straw hydrolysate under non-sterile environmental conditions.

Published Date

Bioresour Technol. 2013 May;135:262-8. doi: 10.1016/j.biortech.2012.10.140. Epub 2012 Nov 5.

Title 

Evaluation of biobutanol production from non-pretreated rice straw hydrolysate under non-sterile environmental conditions.

Author Information 

Chen WH1, Chen YC, Lin JG.

Abstract

The study aims to investigate a cost-effective approach to convert non-pretreated rice straw hydrolysate into biobutanol. The influences of the initial cell concentration and incubation temperature on biobutanol production were evaluated under both sterile and non-sterile conditions. Results indicate that 100% glucose utilization could be achieved for initial cell concentrations greater than 2100 mg/L under both sterile and non-sterile conditions. Regression analyses resolve that under the sterile condition, the maximum butanol productivity of 1.45 g/L/d was projected at 1.96 g/L of cells and 32.3 °C, while the maximum butanol yield of 0.22 g/g was predicted at 2.01 g/L of cells and 26.3 °C. These two maximum values could not be projected by the regression analyses for the non-sterile condition. However, this study confirms that a high initial cell concentration of Clostridium saccharoperbutylacetonicum N1-4 can minimize interference from other microbes so that non-sterile biobutanol production is comparable to sterile biobutanol production.

For further details log on website :
http://www.ncbi.nlm.nih.gov/pubmed/23186674