Effect of media sterilization and enrichment on ethanol production from carob extract in a biofilm reactor

Germec M., TURHAN İ., Demirci A., KARHAN M.

ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS, vol.38, no.21, pp.3268-3272, 2016 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 38 Issue: 21
  • Publication Date: 2016
  • Doi Number: 10.1080/15567036.2015.1138004
  • Journal Name: ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.3268-3272
  • Keywords: Biofilm reactor, enrichment, ethanol fermentation, kinetic parameters, non-sterile carob extract, SACCHAROMYCES-CEREVISIAE CELLS, ZYMOMONAS-MOBILIS, POD EXTRACT, KINETICS
  • Akdeniz University Affiliated: Yes

Abstract

In this study, repeated-batch fermentations in a biofilm reactor were evaluated for ethanol production from non-sterile enriched (NSE) and non-sterile non-enriched (NSNE) carob extracts by using Saccharomyces cerevisiae. For the NSE medium, the ethanol production (P) and yield (Y-P/S) were 18.46 g/L and 33.76%, respectively. However, for the NSNE medium, P and Y-P/S were 19.57 g/L and 38.14%, respectively. Results indicated that cost-effective ethanol production from non-sterile carob extract (NSCE) can be successfully applied in a biofilm reactor regarding both energy cost and recovery time.