Details

Autor(en) / Beteiligte

• Pereira, Francisco B
• Guimarães, Pedro M. R
• Teixeira, José A
• Domingues, Lucília

Titel

Selection of Saccharomyces cerevisiae strains for efficient very high gravity bio-ethanol fermentation processes

Ist Teil von

• Biotechnology letters, 2010-11, Vol.32 (11), p.1655-1661

Ort / Verlag

Dordrecht: Dordrecht : Springer Netherlands

Erscheinungsjahr

2010

Quelle

MEDLINE

Beschreibungen/Notizen

• An optimized very high gravity (VHG) glucose medium supplemented with low cost nutrient sources was used to evaluate bio-ethanol production by 11 Saccharomyces cerevisiae strains. The industrial strains PE-2 and CA1185 exhibited the best overall fermentation performance, producing an ethanol titre of 19.2% (v/v) corresponding to a batch productivity of 2.5 g l⁻¹ h⁻¹, while the best laboratory strain (CEN.PK 113-7D) produced 17.5% (v/v) ethanol with a productivity of 1.7 g l⁻¹ h⁻¹. The results presented here emphasize the biodiversity found within S. cerevisiae species and that naturally adapted strains, such as PE-2 and CA1185, are likely to play a key role in facilitating the transition from laboratory technological breakthroughs to industrial-scale bio-ethanol fermentations.