TY - JOUR
T1 - Exploiting new biorefinery models using non-conventional yeasts and their implications for sustainability
AU - Yamakawa, Celina Kiyomi
AU - Kastell, Laura
AU - Mahler, Mikkel R.
AU - Martinez, José L.
AU - Mussatto, Solange I.
PY - 2020
Y1 - 2020
N2 - Feasible bioprocessing of lignocellulosic biomass requires the use of microbial strains with tolerance to inhibitor compounds and osmotic pressure, able to provide high product yield and productivity. In this sense, this study evaluated the potential of two non-conventional yeasts, Hansenula polymorpha CBS 4732 and Debaryomyces hansenii CBS 767, for use on biomass conversion in a biorefinery perspective. The ability of the strains to consume pentose and hexose sugars, to resist the toxic compounds present in hydrolysates, as well as to produce sugar alcohols and ethanol, was investigated. H. polymorpha showed highlighted resistance to toxic compounds and relevant ability to consume xylose and produce xylitol and ethanol under these conditions, at 37 °C. D. hansenii was a great producer of arabitol from glucose. The implications for sustainability due to the use of these yeasts in biorefineries was discussed. These results open up new perspectives for the development of the biorefinery sector.
AB - Feasible bioprocessing of lignocellulosic biomass requires the use of microbial strains with tolerance to inhibitor compounds and osmotic pressure, able to provide high product yield and productivity. In this sense, this study evaluated the potential of two non-conventional yeasts, Hansenula polymorpha CBS 4732 and Debaryomyces hansenii CBS 767, for use on biomass conversion in a biorefinery perspective. The ability of the strains to consume pentose and hexose sugars, to resist the toxic compounds present in hydrolysates, as well as to produce sugar alcohols and ethanol, was investigated. H. polymorpha showed highlighted resistance to toxic compounds and relevant ability to consume xylose and produce xylitol and ethanol under these conditions, at 37 °C. D. hansenii was a great producer of arabitol from glucose. The implications for sustainability due to the use of these yeasts in biorefineries was discussed. These results open up new perspectives for the development of the biorefinery sector.
KW - Non-conventional yeasts
KW - Biorefinery
KW - Hydrolysate
KW - Inhibitors
KW - Sustainability
U2 - 10.1016/j.biortech.2020.123374
DO - 10.1016/j.biortech.2020.123374
M3 - Journal article
C2 - 32320924
SN - 0960-8524
VL - 309
JO - Bioresource Technology
JF - Bioresource Technology
M1 - 123374
ER -