Simultaneous glucose and xylose utilization for improved ethanol production from lignocellulosic biomass through SSFF with encapsulated yeast

Ishola, Mofoluwake M.; Brandberg, Tomas; Taherzadeh, Mohammad J.

doi:10.1016/j.biombioe.2015.03.021

Cited by 40 publications

(35 citation statements)

References 16 publications

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“…Ishola et al . ( 126 ) also used SSFF system for simultaneous glucose and xylose uptake by genetically modified yeast strain S. cerevisiae (T0936) with the ability to ferment xylose in the bioethanol production from pretreated wheat straw (xylose-rich lignocellulose-containing raw material). In this SSFF ethanol yield was 90% of the theoretical yield.…”

Section: Bioethanol Production From Raw Materials That Contain Lignocmentioning

confidence: 99%

Bioethanol Production from Renewable Raw Materials and its Separation and Purification: a Review

Bušić

Marđetko

Kundas

et al. 2018

Food Technol. Biotechnol.

406

151

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SUMMARYProduction of biofuels from renewable feedstocks has captured considerable scientific attention since they could be used to supply energy and alternative fuels. Bioethanol is one of the most interesting biofuels due to its positive impact on the environment. Currently, it is mostly produced from sugar- and starch-containing raw materials. However, various available types of lignocellulosic biomass such as agricultural and forestry residues, and herbaceous energy crops could serve as feedstocks for the production of bioethanol, energy, heat and value-added chemicals. Lignocellulose is a complex mixture of carbohydrates that needs an efficient pretreatment to make accessible pathways to enzymes for the production of fermentable sugars, which after hydrolysis are fermented into ethanol. Despite technical and economic difficulties, renewable lignocellulosic raw materials represent low-cost feedstocks that do not compete with the food and feed chain, thereby stimulating the sustainability. Different bioprocess operational modes were developed for bioethanol production from renewable raw materials. Furthermore, alternative bioethanol separation and purification processes have also been intensively developed. This paper deals with recent trends in the bioethanol production as a fuel from different renewable raw materials as well as with its separation and purification processes.

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Section: Bioethanol Production From Raw Materials That Contain Lignocmentioning

confidence: 99%

Bioethanol Production from Renewable Raw Materials and its Separation and Purification: a Review

Bušić

Marđetko

Kundas

et al. 2018

Food Technol. Biotechnol.

406

151

View full text Add to dashboard Cite

show abstract

“…Previous research has revealed that the increase in the concentrations of glucose decreased xylose consumption and that hexose transporter overexpression Hxt7 partially relieved the inhibitory effects of increasing glucose concentration [46]. Ishola et al [47,48] reported that glucose concentration affected xylose uptake in SSFF or in reverse membrane bioreactors. In recombinant flocculent S. cerevisiae the best ratio of glucose/xylose for the highest xylose consumption rate was 2:3 among different ratios [49].…”

Section: Effect Of Sugar Concentration On Xylose and Glucose Utilizationmentioning

confidence: 99%

Enhancement of Simultaneous Xylose and Glucose Utilization by Regulating ZWF1 and PGI1 in Saccharomyces Cerevisiae

Liu

et al. 2017

Trans. Tianjin Univ.

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Xylose utilization is one of the key issues in lignocellulose bioconversion. Because of glucose repression, in most engineered yeast with heterogeneous xylose metabolic pathway, xylose is not consumed until glucose is completely utilized. Although simultaneous glucose and xylose utilization have been achieved in yeast by RPE1 deletion, we regulated ZWF1 and PGI1 transcription to improve simultaneous xylose and glucose utilization by controlling the metabolic flux from glucose into the PP pathway. Xylose and glucose consumption increased by approximately 80 and 72%, respectively, whereas ZWF1 was overexpressed by multi-copy plasmids with a strong transcriptional promoter. PGI1 expression was knocked down by promoter replacement; the glucose and xylose metabolism increased when PGI1p was replaced by weak promoters, SSA1p and PDA1p. ZWF1 overexpression decreased while PGI1 down-regulation increased the ethanol yield to some extent in the recombinant strains.

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“…They used the genetically modified strain of S. cerevisiae T0936 and employed Simultaneous Saccharification, Filtration and Fermentation technique for simultaneous utilization of glucose and xylose. They also tested the elimination of bacterial contamination by high solid loading and inhibitory medium effect on the modified strain of bacteria used [17]. This paper basically focuses on optimization of condition through response surface methodology for production of ethanol from sweet sorghum bagasse as it is cheap and widely available resource.…”

Section: Literature Reviewmentioning

confidence: 99%

Optimization of Fermentation Conditions for Ethanol Production from Renewable Biomass Using Response Surface Methodology

Tripathi¹

2018

J Pet Environ Biotechnol

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Potato Peel Waste (PPW) is a potential lignocellulosic biomass substrate for bioethanol production due to its high starch content and easy availability. In this study, we performed research optimization of fermentation process by Response Surface Methodology (RSM) using Plackett-Burman design. The process herein included acid-base pre-treatment of biomass, which was then followed by enzymatic hydrolysis as a potential step. The concentration of reducing sugar in the hydrolysate thus obtained was then analyzed by DNSA method. After fermenting the hydrolysate with Saccharomyces cerevisiae for several days, distillation was done. Analysis of hydrolysate was done by FTIR. Pre-treatment is used for lignocellulosic biomass for improving the hydrolysis of the potato as it contains a high amount of cellulose and removal of lignin and hemicellulose. Cellulose converts into the reducing sugars and then to ethanol. Saccharification and fermentation methods were performed to acquire maximum yield of ethanol. The potato peels were pre-treated with Sulphuric acid and sodium hydroxide solutions.

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Simultaneous glucose and xylose utilization for improved ethanol production from lignocellulosic biomass through SSFF with encapsulated yeast

Cited by 40 publications

References 16 publications

Bioethanol Production from Renewable Raw Materials and its Separation and Purification: a Review

Bioethanol Production from Renewable Raw Materials and its Separation and Purification: a Review

Enhancement of Simultaneous Xylose and Glucose Utilization by Regulating ZWF1 and PGI1 in Saccharomyces Cerevisiae

Optimization of Fermentation Conditions for Ethanol Production from Renewable Biomass Using Response Surface Methodology

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