The fermentation performance of nine strains of Saccharomyces cerevisiae in batch and fed-batch cultures in dilute-acid wood hydrolysate
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Concentration-driven reverse membrane bioreactor for the fermentation of highly inhibitory lignocellulosic hydrolysate
2020, Process BiochemistryCitation Excerpt :In this rMBR fermentation condition, benefitting from an initial furfural to cell ratio of 0.93:1, a complete furfural bioconversion was achieved within 40 h of fermentation. Although these concentrations of lignocellulosic degradation products have been reported to considerably disturb the fermentation [11,12], such effects were not observed in this rMBR set-up. According to the hypothetical scenarios presented previously [24], this represents sub-inhibitory conditions in which the cells’ physiological and metabolic state are not severely affected as the low diffusion rate of furfural only affects a fraction of cells located in the surface of the cell aggregate, while cells placed in the deeper layers continue to thrive on the nutrients provided in a sub-inhibitory microenvironment.
New trends in sparkling wine production: Yeast rational selection
2019, Alcoholic Beverages: Volume 7: The Science of BeveragesScreening for inhibitor tolerant Saccharomyces cerevisiae strains from diverse environments for use as platform strains for production of fuels and chemicals from biomass
2018, Bioresource Technology ReportsCitation Excerpt :These strains while often poly- or aneuploid, offer a greater genetic landscape to potentially deal with the inhibitors found in lignocellulosic hydrolysates. Environmental strains appear to be more robust as strains were found to be more tolerant to the inhibitors found in spruce (Brandberg et al., 2004) and wheat straw hydrolysates (Panagiotou and Olsson, 2007) relative to laboratory strains. The apparent potential of environmental strains for greater tolerance to inhibitors has led to surveys of strains from various environments to find strains with improved tolerance relative to strains currently in use at biofuel production facilities (Choudhary et al., 2017; Favaro et al., 2013; Field et al., 2015; Jin et al., 2013; Pereira et al., 2014).
Industrial robust yeast isolates with great potential for fermentation of lignocellulosic biomass
2014, Bioresource TechnologyCitation Excerpt :As general trend, strains isolated from Brazilian ethanol plant and “cachaça” fermentations showed higher detoxification percentage of furans and ethanol production than the laboratory background strains and K. marxianus yeasts. Brandberg et al. (2004) reported an efficient conversion of HMF by isolated strain from spent sulphite liquor from Swedish pulp plant (ATCC 96581). In this case, the authors proposed that the same enzymes were involved in both process (ethanol production and furan conversion).