scholarly journals Exploring the tolerance of marine yeast to inhibitory compounds for improving bioethanol production

2019 ◽  
Vol 3 (6) ◽  
pp. 1545-1553 ◽  
Author(s):  
Darren Greetham ◽  
Abdelrahman Saleh Zaky ◽  
Chenyu Du
Keyword(s):  
Bioethanol Production ◽  
Marine Yeast ◽  
Inhibitor Tolerance ◽  
Lignocellulosic Bioethanol ◽  
Inhibitory Compounds

Inhibitor tolerance is one of the key challenges in lignocellulosic bioethanol production.

Study on Lignocellulosic Bioethanol Production in Serbia - Prospects and Constraints

2018 ◽  
Author(s):  
Milan Martinov ◽  
Peter Schulze Lammers ◽  
Djordje Djatkov ◽  
Miodrag Viskovic
Keyword(s):  
Bioethanol Production ◽  
Lignocellulosic Bioethanol

Inhibitory compounds formation after liquid hot water (LHW) pretreatment of corn stover as an alternative to wood lignocellulosic feedstock for bioethanol production

2020 ◽  
Vol 110 ◽  
pp. 110-117
Author(s):  
Florentyna Akus-Szylberg ◽  
Andrzej Antczak ◽  
Janusz Zawadzki
Keyword(s):  
Corn Stover ◽  
Hot Water ◽  
Bioethanol Production ◽  
Spectrophotometric Methods ◽  
Liquid Hot Water ◽  
Treatment Conditions ◽  
Lignocellulosic Feedstock ◽  
Inhibitory Compounds ◽  
Different Temperatures ◽  
Mixed Biomass

Inhibitory compounds formation after liquid hot water (LHW) pretreatment of corn stover as an alternative to wood lignocellulosic feedstock for bioethanol production. Thus far, corn stover has been perceived as a promising lignocellulosic alternative to wood intended for bioethanol procurement, however it should be recognised also as a potential future component in a mixed biomass system. The aim of this research was to investigate the effect of applying different hydrothermal treatment conditions on the potential inhibitory compounds formation from corn stover. An analysis of selected inhibitory compounds formed after pretreatment performed at different temperatures (160°C, 175°C, 190°C and 205°C) was carried out. Furfural, simple sugars and lignin were some of the inhibitors examined with HPLC and UV-VIS spectrophotometric methods. Furthermore, the chemical composition of organic extracts obtained from native and LHW pretreated biomass was analyzed qualitatively with GC-MS method and inhibitory compounds like vanillin, sitosterol or syringol were detected. As a result of those investigations compared to enzymatic hydrolysis yield the temperature of 175°C was chosen as the most promising condition of corn stover LHW pretreatment in terms of the efficiency of the subsequent phases of bioethanol production.

Experimental Guidelines to Optimize Two Crucial Steps of Lignocellulosic Bioethanol Production

2014 ◽  
Vol 1 (4) ◽  
pp. 311-321 ◽  
Author(s):  
I. Henaut ◽  
F. Ben Chaabane ◽  
N. Lopes Ferreira ◽  
F. Augier
Keyword(s):  
Bioethanol Production ◽  
Lignocellulosic Bioethanol

scholarly journals Evaluation of Alkali-Pretreated Soybean Straw for Lignocellulosic Bioethanol Production

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Seonghun Kim
Keyword(s):  
Sodium Hydroxide ◽  
Enzymatic Saccharification ◽  
Renewable Resource ◽  
Bioethanol Production ◽  
Yield Efficiency ◽  
Lignocellulosic Bioethanol ◽  
Acid Metabolites ◽  
Soybean Straw ◽  
Pretreated Biomass ◽  
Simultaneous Saccharification

Soybean straw is a renewable resource in agricultural residues that can be used for lignocellulosic bioethanol production. To enhance enzymatic digestibility and fermentability, the biomass was prepared with an alkali-thermal pretreatment (sodium hydroxide, 121°C, 60 min). The delignification yield was 34.1~53%, in proportion to the amount of sodium hydroxide, from 0.5 to 3.0 M. The lignin and hemicellulose contents of the pretreated biomass were reduced by the pretreatment process, whereas the proportion of cellulose was increased. Under optimal condition, the pretreated biomass consisted of 74.0±0.1% cellulose, 10.3±0.1% hemicellulose, and 10.1±0.6% lignin. During enzymatic saccharification using Cellic® CTec2 cellulase, 10% (w/v) of pretreated soybean straw was hydrolyzed completely and converted to 67.3±2.1 g/L glucose and 9.4±0.5 g/L xylose with a 90.9% yield efficiency. Simultaneous saccharification and fermentation of the pretreated biomass by Saccharomyces cerevisiae W303-1A produced 30.5±1.2 g/L ethanol in 0.5 L fermented medium containing 10% (w/v) pretreated biomass after 72 h. The ethanol productivity was 0.305 g ethanol/g dry biomass and 0.45 g ethanol/g glucose after fermentation, with a low concentration of organic acid metabolites. Also, 82% of fermentable sugar was used by the yeast for ethanol fermentation. These results show that the combination of alkaline pretreatment and biomass hydrolysate is useful for enhancing bioethanol productivity using delignified soybean straw.

scholarly journals A review of biological delignification and detoxification methods for lignocellulosic bioethanol production

2014 ◽  
Vol 35 (3) ◽  
pp. 342-354 ◽  
Author(s):  
Antonio D. Moreno ◽  
David Ibarra ◽  
Pablo Alvira ◽  
Elia Tomás-Pejó ◽  
Mercedes Ballesteros
Keyword(s):  
Bioethanol Production ◽  
Lignocellulosic Bioethanol

scholarly journals Bioethanol production by mangrove-derived marine yeast, Sacchromyces cerevisiae

2013 ◽  
Vol 25 (2) ◽  
pp. 121-127 ◽  
Author(s):  
K. Saravanakumar ◽  
P. Senthilraja ◽  
K. Kathiresan
Keyword(s):  
Bioethanol Production ◽  
Marine Yeast

‘Omics’ technologies and systems biology for engineeringSaccharomyces cerevisiaestrains for lignocellulosic bioethanol production

Biofuels ◽  
2011 ◽  
Vol 2 (6) ◽  
pp. 659-675 ◽  
Author(s):  
Dominic Pinel ◽  
Pratish Gawand ◽  
Radhakrishnan Mahadevan ◽  
Vincent JJ Martin
Keyword(s):  
Systems Biology ◽  
Bioethanol Production ◽  
Omics Technologies ◽  
Lignocellulosic Bioethanol
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