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Strategies and advances in the pretreatment of microalgal biomass

Publication Type : Journal Article

Publisher : J Biotechnol

Source : J Biotechnol. 2021 Sep 16:S0168-1656(21)00244-3.

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Campus : Kochi

School : School of Biotechnology

Department : biotechnology

Year : 2021

Abstract : Modification of structural components, especially the cell wall, through adequate pretreatment strategies is critical to the bioconversion efficiency of algal biomass to biorefinery products. Over the years, several physical, physicochemical, chemical and green pretreatment methods have been developed to achieve maximum productivity of desirable by-products to sustain a circular bioeconomy. The effectiveness of the pretreatment methods is however, species specific due to diversity in the innate nature of the microalgal cell wall. This review provides a comprehensive overview of the most notable and promising pretreatment strategies for several microalgae species. Methods including the application of stress, ultrasound, electromagnetic fields, pressure, heat as well as chemical solvents (ionic liquids, supercritical fluids, deep eutectic solvents etc.) have been detailed and analyzed. Enzyme and hydrolytic microorganism based green pretreatment methods have also been reviewed. Metabolic engineering of microorganisms for product specificity and lower inhibitors can be a future breakthrough in microalgal pretreatment.

Cite this Research Publication : Sirohi R, Ummalyma SB, Sagar NA, Sharma P, Awasthi MK, Badgujar PC, Aravind Madhavan, Rajasekharan R, Sindhu R, Sim SJ, Pandey A. Strategies and advances in the pretreatment of microalgal biomass. J Biotechnol. 2021 Sep 16:S0168-1656(21)00244-3. doi: 10.1016/j.jbiotec.2021.09.010.(IF-3.595).

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