Looking beyond Saccharomyces: the potential of non-conventional yeast species for desirable traits in bioethanol fermentation
Reviewartikel, 2015

Saccharomyces cerevisiae has been used for millennia in the production of food and beverages and is by far the most studied yeast species. Currently, it is also the most used microorganism in the production of first-generation bioethanol from sugar or starch crops. Second-generation bioethanol, on the other hand, is produced from lignocellulosic feedstocks that are pretreated and hydrolyzed to obtain monomeric sugars, mainly D-glucose, D-xylose and L-arabinose. Recently, S. cerevisiaerecombinant strains capable of fermenting pentose sugars have been generated. However, the pretreatment of the biomass results in hydrolysates with high osmolarity and high concentrations of inhibitors. These compounds negatively influence the fermentation process. Therefore, robust strains with high stress tolerance are required. Up to now, more than 2000 yeast species have been described and some of these could provide a solution to these limitations because of their high tolerance to the most predominant stress conditions present in a second-generation bioethanol reactor. In this review, we will summarize what is known about the non-conventional yeast species showing unusual tolerance to these stresses, namely Zygosaccharomyces rouxii(osmotolerance), Kluyveromyces marxianus and Ogataea (Hansenula) polymorpha(thermotolerance), Dekkera bruxellensis (ethanol tolerance), Pichia kudriavzevii (furan derivatives tolerance) and Z. bailii (acetic acid tolerance).

yeasts

bioethanol

non-Saccharomyces

stress tolerance

phenotype

Författare

Dorota Radecka

VIB

KU Leuven

Vaskar Mukherjee

VIB

KU Leuven

Raquel Quintilla Mateo

KU Leuven

VIB

Marija Stojiljkovic

VIB

KU Leuven

María R. Foulquié-Moreno

KU Leuven

VIB

Johan M. Thevelein

VIB

KU Leuven

FEMS Yeast Research

1567-1356 (ISSN) 1567-1364 (eISSN)

Vol. 15 6

Ämneskategorier

Evolutionsbiologi

Industriell bioteknik

Biokemi och molekylärbiologi

Bioprocessteknik

Mikrobiologi

Genetik

Styrkeområden

Livsvetenskaper och teknik (2010-2018)

DOI

10.1093/femsyr/fov053

Mer information

Senast uppdaterat

2019-09-30