Yeast Strain Selection for Fuel Ethanol Production

2020 ◽  
pp. 225-243
Author(s):  
Chandra J. Panchal ◽  
Flavio Cesar Almeida Tavares
2008 ◽  
Vol 8 (7) ◽  
pp. 1155-1163 ◽  
Author(s):  
Luiz C. Basso ◽  
Henrique V. de Amorim ◽  
Antonio J. de Oliveira ◽  
Mario L. Lopes

1985 ◽  
Vol 7 (5) ◽  
pp. 349-354 ◽  
Author(s):  
G. K. Whitney ◽  
C. R. Hurray ◽  
I. Russell ◽  
G. G. Stewart

LWT ◽  
2017 ◽  
Vol 84 ◽  
pp. 290-297 ◽  
Author(s):  
Gilberto V.M. Pereira ◽  
Jonatan P. Alvarez ◽  
Dão Pedro de C. Neto ◽  
Vanete Thomaz Soccol ◽  
Valcineide O.A. Tanobe ◽  
...  

2012 ◽  
Vol 608-609 ◽  
pp. 281-285
Author(s):  
Ming Chen ◽  
Guo Ren Zu ◽  
Chun Zhi Zhang

Fuel ethanol production from lignocellulosic biomass corn stover was investigated. Compared with acid pretreatment and ammonia steeping pretreatment, alkali pretreatment with 2% NaOH markedly enhanced lignin removal and thereby improved the enzymatic hydrolysis yield to 81.2% by 48 h. Fed-batch hydrolysis was started with a batch hydrolysis containing 80 g/l substrate, with cellulosic residue added at 6 and 12 h twice to get a final substrate concentration of 110 g/l. After 72 h of hydrolysis, the reducing sugar concentration reached 89.5 g/l with a hydrolysis yield of 83.3%. Further fermentation of the cellulosic hydrolysate containing 56.7 g/l glucose and 23.6 g/l xylose was performed using a recombinant yeast strain Saccharomyces cerevisiae ZU-10, and 36.3 g/l ethanol was produced within 72 h. The research results are meaningful in fuel ethanol production from renewable lignocellulosic biomass.


2012 ◽  
Vol 160 (3-4) ◽  
pp. 229-235 ◽  
Author(s):  
Yu Shen ◽  
Jin-Song Guo ◽  
You-Peng Chen ◽  
Hai-Dong Zhang ◽  
Xu-Xu Zheng ◽  
...  

Fermentation ◽  
2021 ◽  
Vol 7 (3) ◽  
pp. 127
Author(s):  
Catarina M. de Figueiredo ◽  
Daniella H. Hock ◽  
Débora Trichez ◽  
Maria de Lourdes B. Magalhães ◽  
Mario L. Lopes ◽  
...  

Many contaminant yeast strains that survive inside fuel ethanol industrial vats show detrimental cell surface phenotypes. These harmful effects may include filamentation, invasive growth, flocculation, biofilm formation, and excessive foam production. Previous studies have linked some of these phenotypes to the expression of FLO genes, and the presence of gene length polymorphisms causing the expansion of FLO gene size appears to result in stronger flocculation and biofilm formation phenotypes. We performed here a molecular analysis of FLO1 and FLO11 gene polymorphisms present in contaminant strains of Saccharomyces cerevisiae from Brazilian fuel ethanol distilleries showing vigorous foaming phenotypes during fermentation. The size variability of these genes was correlated with cellular hydrophobicity, flocculation, and highly foaming phenotypes in these yeast strains. Our results also showed that deleting the primary activator of FLO genes (the FLO8 gene) from the genome of a contaminant and highly foaming industrial strain avoids complex foam formation, flocculation, invasive growth, and biofilm production by the engineered (flo8∆::BleR/flo8Δ::kanMX) yeast strain. Thus, the characterization of highly foaming yeasts and the influence of FLO8 in this phenotype open new perspectives for yeast strain engineering and optimization in the sugarcane fuel-ethanol industry.


Fuel ◽  
2008 ◽  
Vol 87 (17-18) ◽  
pp. 3640-3647 ◽  
Author(s):  
J.A. Pérez ◽  
I. Ballesteros ◽  
M. Ballesteros ◽  
F. Sáez ◽  
M.J. Negro ◽  
...  

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