The thermotolerant yeast strain isolated from sugarcane juice through enrichment technique was identified as a strain of Pichiakudriavzevii (Issatchenkiaorientalis) through molecular characterization. The P. kudriavzevii cells adapted to galactose medium produced about 30% more ethanol from sugarcane juice than the non-adapted cells. The recycled cells could be used for four successive cycles without a significant drop in ethanol production. Fermentation in a laboratory fermenter with galactose adapted P. kudriavzevii cells at 40°C resulted in an ethanol concentration and productivity of 71.9 g L(-1) and 4.0 g L(-1)h(-1), respectively from sugarcane juice composed of about 14% (w/v) sucrose, 2% (w/v) glucose and 1% (w/v) fructose. In addition to ethanol, 3.30 g L(-1) arabitol and 4.19 g L(-1) glycerol were also produced, whereas sorbitol and xylitol were not formed during fermentation. Use of galactose adapted P. kudriavzevii cells for ethanol production from sugarcane juice holds potential for scale-up studies.

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.biortech.2011.02.015DOI Listing

Publication Analysis

Top Keywords

sugarcane juice
20
ethanol production
12
kudriavzevii cells
12
production sugarcane
8
galactose adapted
8
adapted kudriavzevii
8
sugarcane
5
juice
5
cells
5
ethanol
5

Similar Publications

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!