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  • Role of metagenomics in prospecting novel endoglucanases, accentuating functional metagenomics approach in second-generation biofuel production: a review.

Role of metagenomics in prospecting novel endoglucanases, accentuating functional metagenomics approach in second-generation biofuel production: a review.

Biomass conversion and biorefinery (2021-01-14)
Ninian Prem Prashanth Pabbathi, Aditya Velidandi, Tanvi Tavarna, Shreyash Gupta, Ram Sarvesh Raj, Pradeep Kumar Gandam, Rama Raju Baadhe
ABSTRACT

As the fossil fuel reserves are depleting rapidly, there is a need for alternate fuels to meet the day to day mounting energy demands. As fossil fuel started depleting, a quest for alternate forms of fuel was initiated and biofuel is one of its promising outcomes. First-generation biofuels are made from edible sources like vegetable oils, starch, and sugars. Second-generation biofuels (SGB) are derived from lignocellulosic crops and the third-generation involves algae for biofuel production. Technical challenges in the production of SGB are hampering its commercialization. Advanced molecular technologies like metagenomics can help in the discovery of novel lignocellulosic biomass-degrading enzymes for commercialization and industrial production of SGB. This review discusses the metagenomic outcomes to enlighten the importance of unexplored habitats for novel cellulolytic gene mining. It also emphasizes the potential of different metagenomic approaches to explore the uncultivable cellulose-degrading microbiome as well as cellulolytic enzymes associated with them. This review also includes effective pre-treatment technology and consolidated bioprocessing for efficient biofuel production.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Cellulase from Aspergillus niger, powder, off-white, ~0.8 U/mg
Sigma-Aldrich
Cellulase from Trichoderma reesei ATCC 26921, lyophilized powder, ≥1 unit/mg solid
Sigma-Aldrich
Cellulase from Trichoderma reesei, aqueous solution, ≥700 units/g
Sigma-Aldrich
Viscozyme® L, cellulolytic enzyme mixture
Sigma-Aldrich
Cellulase from Trichoderma sp., powder, ≥5,000 units/g solid
Sigma-Aldrich
Cellulase, enzyme blend