Cellulosic Ethanol Feedstock: Diversity and Potential

Sharma, Deepansh; Saini, Anita

doi:10.1007/978-981-15-4573-3_2

Cited by 10 publications

(8 citation statements)

References 156 publications

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“…cellulose, hemicellulose, and lignin. Cellulose is a polysaccharide made of straight chains of C 6 H 12 O 6 units connected by β-1, 4 glycosidic bonds represented by a formula (C 6 H 10 O 5 ) n ; where, n is the degree of polymerization (DP) [ 75 ]. It has a complex physical structure because free OH groups present on C2, C3, and C6 form intra and inter hydrogen bonds.…”

Section: Feedstockmentioning

confidence: 99%

“…Various countries like India, the USA, China, European Union, and Canada are involved in wheat cultivation and annually produce approximately 850 million metric tons of wheat straw [ 80 ]. The estimated data have revealed that the 354Tg of wheat straw can produce 104 GL bioethanol [ 75 ]. Ziaei-Rad et al [ 81 ] fermented ionic liquid (IL)-pretreated wheat straw hydrolyzate with S. cerevisiae resulted in 43.1 g/l of the ethanol production after 48 h fermentation period.…”

Section: Feedstockmentioning

confidence: 99%

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A panoramic view of technological landscape for bioethanol production from various generations of feedstocks

et al. 2023

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Bioethanol is an appropriate alternate energy option due to its renewable, nontoxic, environmentally friendly, and carbon-neutral nature. Depending upon various feedstocks, bioethanol is classified in different various generations. First-generation ethanol created a food vs fuel problem, which was overcome by second-generation, third-generation and fourth-generation ethanol. The considerable availability of lignocellulosic biomass makes it a suitable feedstock, however, its recalcitrant nature is the main hurdle in converting it to bioethanol. The present study gives a comprehensive assessment of global biofuel policies and the current status of ethanol production. Feedstocks for first-generation (sugar and starch-based), second-generation (lignocellulosic biomass and energy crops), third-generation (algal-based) and fourth-generation (genetically modified algal biomass or crops) are discussed in detail. The study also assessed the process for ethanol production from various feedstocks, besides giving a holestic background knowledge on the bioconversion process, factors affecting bioethanol production, and various microorganisms involved in the fermentation process. Biotechnological tools also play a pivotal role in enhancing process efficiency and product yield. In adddition, most significant development in the field of genetic engineering and adaptive evolution are also highlighted.

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Section: Feedstockmentioning

confidence: 99%

Section: Feedstockmentioning

confidence: 99%

A panoramic view of technological landscape for bioethanol production from various generations of feedstocks

et al. 2023

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show abstract

“…Second‐generation biofuels (including bioethanol and biodiesels, but also likely to diversify to include other fuels and non‐fuel industrial chemicals, such as acetone, butanol, succinate, and others) are produced from non‐edible lignocellulosic biomass, such as agro‐forest residues, woody feedstocks, and industrial lignocellulosic wastes (Kucharska et al ., 2018; Raud et al ., 2019; Sharma and Saini, 2020). Lignocellulosic biomass is plant secondary cell walls (SCW) composed primarily of cellulose (40%–50%), hemicelluloses (25%–30%), and lignin (25%–30%) (Sharma and Saini, 2020). The ratio of these constituents varies across different plant species and genotypes within each species (Wierzbicki et al ., 2019; Sharma and Saini, 2020).…”

Section: Plant Biomass Feedstocks With Industrial Potentialmentioning

confidence: 99%

“…Lignocellulosic biomass is plant secondary cell walls (SCW) composed primarily of cellulose (40%–50%), hemicelluloses (25%–30%), and lignin (25%–30%) (Sharma and Saini, 2020). The ratio of these constituents varies across different plant species and genotypes within each species (Wierzbicki et al ., 2019; Sharma and Saini, 2020). Environmental conditions, biotic stresses, and different stages of growth and development also affect lignocellulosic composition (Sharma and Saini, 2020).…”

Section: Plant Biomass Feedstocks With Industrial Potentialmentioning

confidence: 99%

“…The ratio of these constituents varies across different plant species and genotypes within each species (Wierzbicki et al ., 2019; Sharma and Saini, 2020). Environmental conditions, biotic stresses, and different stages of growth and development also affect lignocellulosic composition (Sharma and Saini, 2020).…”

Section: Plant Biomass Feedstocks With Industrial Potentialmentioning

confidence: 99%

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Thermophilic microbial deconstruction and conversion of natural and transgenic lignocellulose

Bing

Sulis

Wang

et al. 2021

Environ Microbiol Rep

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The potential to convert renewable plant biomasses into fuels and chemicals by microbial processes presents an attractive, less environmentally intense alternative to conventional routes based on fossil fuels. This would best be done with microbes that natively deconstruct lignocellulose and concomitantly form industrially relevant products, but these two physiological and metabolic features are rarely and simultaneously observed in nature. Genetic modification of both plant feedstocks and microbes can be used to increase lignocellulose deconstruction capability and generate industrially relevant products. Separate efforts on plants and microbes are ongoing, but these studies lack a focus on optimal, complementary combinations of these disparate biological systems to obtain a convergent technology. Improving genetic tools for plants have given rise to the generation of low-lignin lines that are more readily solubilized by microorganisms. Most focus on the microbiological front has involved thermophilic bacteria from the genera Caldicellulosiruptor and Clostridium, given their capacity to degrade lignocellulose and to form bio-products through metabolic engineering strategies enabled by ever-improving molecular genetics tools. Bioengineering plant properties to better fit the deconstruction capabilities of candidate consolidated bioprocessing microorganisms has potential to achieve the efficient lignocellulose deconstruction needed for industrial relevance.

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Sustainable and Economical Approaches in Utilizing Agricultural Solid Waste for Bioethanol Production

Gupta¹,

Singh²,

Prasad

et al. 2021

Handbook of Solid Waste Management

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Cellulosic Ethanol Feedstock: Diversity and Potential

Cited by 10 publications

References 156 publications

A panoramic view of technological landscape for bioethanol production from various generations of feedstocks

A panoramic view of technological landscape for bioethanol production from various generations of feedstocks

Thermophilic microbial deconstruction and conversion of natural and transgenic lignocellulose

Sustainable and Economical Approaches in Utilizing Agricultural Solid Waste for Bioethanol Production

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