Recent advances in metabolic engineering of microorganisms for advancing lignocellulose-derived biofuels

文献类型： 外文期刊

第一作者： Joshi, Abhishek

作者： Joshi, Abhishek;Arora, Jaya;Verma, Krishan K.;Rajput, Vishnu D.;Minkina, Tatiana

作者机构：

关键词： Biofuels; lignocellulose; microorganism; metabolic engineering; genome engineering

期刊名称：BIOENGINEERED （ 影响因子：6.832； 五年影响因子：4.815 ）

ISSN： 2165-5979

年卷期： 2022 年 13 卷 4 期

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收录情况： SCI

摘要： Combating climate change and ensuring energy supply to a rapidly growing global population has highlighted the need to replace petroleum fuels with clean, and sustainable renewable fuels. Biofuels offer a solution to safeguard energy security with reduced ecological footprint and process economics. Over the past years, lignocellulosic biomass has become the most preferred raw material for the production of biofuels, such as fuel, alcohol, biodiesel, and biohydrogen. However, the cost-effective conversion of lignocellulose into biofuels remains an unsolved challenge at the industrial scale. Recently, intensive efforts have been made in lignocellulose feedstock and microbial engineering to address this problem. By improving the biological pathways leading to the polysaccharide, lignin, and lipid biosynthesis, limited success has been achieved, and still needs to improve sustainable biofuel production. Impressive success is being achieved by the retouring metabolic pathways of different microbial hosts. Several robust phenotypes, mostly from bacteria and yeast domains, have been successfully constructed with improved substrate spectrum, product yield and sturdiness against hydrolysate toxins. Cyanobacteria is also being explored for metabolic advancement in recent years, however, it also remained underdeveloped to generate commercialized biofuels. The bacterium Escherichia coli and yeast Saccharomyces cerevisiae strains are also being engineered to have cell surfaces displaying hydrolytic enzymes, which holds much promise for near-term scale-up and biorefinery use. Looking forward, future advances to achieve economically feasible production of lignocellulosic-based biofuels with special focus on designing more efficient metabolic pathways coupled with screening, and engineering of novel enzymes.

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