Sea Water as a Reaction Medium for Bioethanol Production

Indira, Dash; Das, Baskar; Balasubramanian, P.; Jayabalan, R.

doi:10.1007/978-981-10-7140-9_9

Cited by 7 publications

(6 citation statements)

References 86 publications

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“…Lignocellulosic biomass or other plant biomasses are renewable materials, comprising mainly cellulose, hemicelluloses, lignin, and starch. Production of bioethanol from biomass consists of four major steps, including biomass pretreatment, enzymatic hydrolysis, fermentation, and distillation (Indira et al, 2018).…”

Section: Bioethanol/biobutanolmentioning

confidence: 99%

Halophiles and Their Vast Potential in Biofuel Production

et al. 2019

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Global warming and the limitations of using fossil fuels are a main concern of all societies, and thus, the development of alternative fuel sources is crucial to improving the current global energy situation. Biofuels are known as the best alternatives of unrenewable fuels and justify increasing extensive research to develop new and less expensive methods for their production. The most frequent biofuels are bioethanol, biobutanol, biodiesel, and biogas. The production of these biofuels is the result of microbial activity on organic substrates like sugars, starch, oil crops, non-food biomasses, and agricultural and animal wastes. Several industrial production processes are carried out in the presence of high concentrations of NaCl and therefore, researchers have focused on halophiles for biofuel production. In this review, we focus on the role of halophilic microorganisms and their current utilization in the production of all types of biofuels. Also, the outstanding potential of them and their hydrolytic enzymes in the hydrolysis of different kind of biomasses and the production of biofuels are discussed.

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Section: Bioethanol/biobutanolmentioning

confidence: 99%

Halophiles and Their Vast Potential in Biofuel Production

et al. 2019

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“…The extremes in environmental conditions would shape and evolve their enzymes to participate in such biochemical reactions [ 89 ]. Nevertheless, salinity has a detrimental effect on enzymatic reactions [ 90 , 91 ]. For instance, catalase and urease activities were reported to be inversely correlated to pH and salinity [ 92 , 93 , 94 ].…”

Section: Discussionmentioning

confidence: 99%

Ubiquitousness of Haloferax and Carotenoid Producing Genes in Arabian Sea Coastal Biosystems of India

et al. 2021

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This study presents a comparative analysis of halophiles from the global open sea and coastal biosystems through shotgun metagenomes (n = 209) retrieved from public repositories. The open sea was significantly enriched with Prochlorococcus and Candidatus pelagibacter. Meanwhile, coastal biosystems were dominated by Marinobacter and Alcanivorax. Halophilic archaea Haloarcula and Haloquandratum, predominant in the coastal biosystem, were significantly (p < 0.05) enriched in coastal biosystems compared to the open sea. Analysis of whole genomes (n = 23,540), retrieved from EzBioCloud, detected crtI in 64.66% of genomes, while cruF was observed in 1.69% Bacteria and 40.75% Archaea. We further confirmed the viability and carotenoid pigment production by pure culture isolation (n = 1351) of extreme halophiles from sediments (n = 410 × 3) sampling at the Arabian coastline of India. All red-pigmented isolates were represented exclusively by Haloferax, resistant to saturated NaCl (6 M), and had >60% G + C content. Multidrug resistance to tetracycline, gentamicin, ampicillin, and chloramphenicol were also observed. Our study showed that coastal biosystems could be more suited for bioprospection of halophiles rather than the open sea.

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“…In China, gasoline stations in many provinces utilize ethanol as an additive. The production of bioethanol from lignocellulosic biomass, named "second generation bioethanol, " includes four main steps: biomass pretreatment, enzymatic hydrolysis, fermentation, and distillation (Indira et al, 2018). The production of bioethanol from lignocellulosic raw materials is beneficial to environment and helps sustainable development, but the second-generation technology still have problems of high cost, and there are several areas of production technology that still require improvement to cut down the cost.…”

Section: Utilization Of Extremophiles and Enzymes In Liquid Biofuels mentioning

confidence: 99%

Recent Development of Extremophilic Bacteria and Their Application in Biorefinery

Zhu

Adebisi

Ahmad

et al. 2020

Front. Bioeng. Biotechnol.

116

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The biorefining technology for biofuels and chemicals from lignocellulosic biomass has made great progress in the world. However, mobilization of laboratory research toward industrial setup needs to meet a series of criteria, including the selection of appropriate pretreatment technology, breakthrough in enzyme screening, pathway optimization, and production technology, etc. Extremophiles play an important role in biorefinery by providing novel metabolic pathways and catalytically stable/robust enzymes that are able to act as biocatalysts under harsh industrial conditions on their own. This review summarizes the potential application of thermophilic, psychrophilic alkaliphilic, acidophilic, and halophilic bacteria and extremozymes in the pretreatment, saccharification, fermentation, and lignin valorization process. Besides, the latest studies on the engineering bacteria of extremophiles using metabolic engineering and synthetic biology technologies for high-efficiency biofuel production are also introduced. Furthermore, this review explores the comprehensive application potential of extremophiles and extremozymes in biorefinery, which is partly due to their specificity and efficiency, and points out the necessity of accelerating the commercialization of extremozymes.

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Sea Water as a Reaction Medium for Bioethanol Production

Cited by 7 publications

References 86 publications

Halophiles and Their Vast Potential in Biofuel Production

Halophiles and Their Vast Potential in Biofuel Production

Ubiquitousness of Haloferax and Carotenoid Producing Genes in Arabian Sea Coastal Biosystems of India

Recent Development of Extremophilic Bacteria and Their Application in Biorefinery

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