Genetic modification of plant cell walls to enhance biomass yield and biofuel production in bioenergy crops

Wang, Yanting; Fan, Chunfen; Liu, Ying; Sun, Dongfa; Wang, Youmei

doi:10.1016/j.biotechadv.2016.06.001

Cited by 200 publications

(137 citation statements)

References 269 publications

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“…From an economic sustainability standpoint, development of new technologies to convert all carbohydrates (including grain, juice and lignocellulose) in sweet sorghum into bioethanol and byproduct is urgently needed. Beyond this, genetic modification of energy crops has shown the promise to significantly enhance biomass yield and biofuel production, which could reduce the input of sweet sorghum logistics and bioethanol production [83]. So, genetic modification of sweet sorghum as a bioenergy crop also needs to be put on the agenda.…”

Section: Discussionmentioning

confidence: 99%

Technical Feasibility and Comprehensive Sustainability Assessment of Sweet Sorghum for Bioethanol Production in China

Yang

Liu

et al. 2018

Sustainability

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Under dual pressures of energy and environmental security, sweet sorghum is becoming one of the most promising feedstocks for biofuel production. In the present study, the technical feasibility of sweet sorghum production was assessed in eight agricultural regions in China using the Sweet Sorghum Production Technique Maturity Model. Three top typical agricultural zones were then selected for further sustainability assessment of sweet sorghum production: Northeast China (NEC), Huang-Huai-Hai Basin (HHHB) and Ganxin Region (GX). Assessment results demonstrated that NEC exhibited the best sustainable production of sweet sorghum, with a degree of technical maturity value of 0.8066, followed by HHHB and GX, with corresponding values of 0.7531 and 0.6594, respectively. Prospective economic profitability analysis indicated that bioethanol production from sweet sorghum was not feasible using current technologies in China. More efforts are needed to dramatically improve feedstock mechanization logistics while developing new bioethanol productive technology to reduce the total cost. This study provides insight and information to guide further technological development toward profitable industrialization and large-scale sweet sorghum bioethanol production.

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Section: Discussionmentioning

confidence: 99%

Technical Feasibility and Comprehensive Sustainability Assessment of Sweet Sorghum for Bioethanol Production in China

Yang

Liu

et al. 2018

Sustainability

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“…Until now, various pre-treatment methods have been developed,which can be extensively categorized into physical (chipping, grinding, irradiation, steam explosion and hot water), chemical (alkaline, acid and ionic liquid), Review Article physico-chemical and biological process (Si et al, 2015;Wang et al, 2016). On the other side, regardless of the pretreatment method used, during the process many inhibitory compounds are produced, which have negative impact on microbial activity in the hydrolysis step.…”

Section: Fig 1: Schematic Pre-treatment Of Lignocellulosic Biomassmentioning

confidence: 99%

“…Since lignocellulosic materials are extremely complex, their pretreatment is very complicated either. The best procedure and conditions of pre-treatment rely entirely on the type of lignocelluloses (Huang et al, 2015;Wang et al, 2016). The cellulose crystallinity (Crl), degree of cellulose polymerization (DP), accessible surface area, and lignin and hemicellulose protection are the major parameters regarded as influencing the rate of lignocelluloses degradation by the enzymes.…”

Section: Effective Parameters In Pre-treatment Lignocellulosesmentioning

confidence: 99%

“…Hemicellulose and lignin are closely connected to cellulose through non-covalent and covalent linkages, the content and distribution of hemicellulose and lignin also show obvious influence on the lignocellulose enzymatic hydrolysis (Alvira et al, 2010;Wang et al, 2016). The presence of hemicelluloses and lignin greatly obstructs the contact of enzymes with cellulose, leading to a very low enzymatic hydrolysis rate of raw materials.…”

Section: Hemicelluloses and Ligninmentioning

confidence: 99%

“…This leads to difficulties within the conversion process; therefore an appropriate pre-treatment technology ( Fig. 1) is needed to overcome this recalcitrance and makes polysaccharides comfortably feasible for enzymatic hydrolysis (Gupta et al, 2011;Singh et al, 2015;Wang et al, 2016). In other words, pre-treatment is the crucial and expensive unit process in converting lignocellulosic biomass into ethanol (Kim et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

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Pretreatment of Lignocelollusic Biomass Based on Improving Enzymatic Hydrolysis

Madadi

Abbas

2017

Int J Appl Sci Biotechnol

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Lignocellulosic materials among the alternative energy resources are the most desirable resources that can be employed to produce cellulosic ethanol, but this materials due to physical and chemical structure arranges strong native recalcitrance and results in low yield of ethanol. Then, a proper pre-treatment method is required to overcome this challenge. Until now, different pre-treatment technologies have been established to enhance lignocellulosic digestibility. This paper widely describes the structure of lignocellulosic biomass and effective parameters in pre-treatment of lignocelluloses, such as cellulose crystallinity, accessible surface area, and protection by lignin and hemicellulose. In addition, an overview about the most important pretreatment processes include physical, chemical, and biological are provided. Finally, we described about the inhibitors enzymes which produced from sugar degradation during pre-treatment process and the ways to control this inhibitors.

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