Microalgal biomass pretreatment for integrated processing into biofuels, food, and feed.

Autor: de Carvalho JC; Federal University of Paraná, Department of Bioprocess Engineering and Biotechnology, Centro Politécnico, 81531-990 Curitiba, Paraná, Brazil. Electronic address: jccarvalho@ufpr.br., Magalhães AI Jr; Federal University of Paraná, Department of Bioprocess Engineering and Biotechnology, Centro Politécnico, 81531-990 Curitiba, Paraná, Brazil., de Melo Pereira GV; Federal University of Paraná, Department of Bioprocess Engineering and Biotechnology, Centro Politécnico, 81531-990 Curitiba, Paraná, Brazil., Medeiros ABP; Federal University of Paraná, Department of Bioprocess Engineering and Biotechnology, Centro Politécnico, 81531-990 Curitiba, Paraná, Brazil., Sydney EB; Federal University of Paraná, Department of Bioprocess Engineering and Biotechnology, Centro Politécnico, 81531-990 Curitiba, Paraná, Brazil., Rodrigues C; Federal University of Paraná, Department of Bioprocess Engineering and Biotechnology, Centro Politécnico, 81531-990 Curitiba, Paraná, Brazil., Aulestia DTM; Federal University of Paraná, Department of Bioprocess Engineering and Biotechnology, Centro Politécnico, 81531-990 Curitiba, Paraná, Brazil., de Souza Vandenberghe LP; Federal University of Paraná, Department of Bioprocess Engineering and Biotechnology, Centro Politécnico, 81531-990 Curitiba, Paraná, Brazil., Soccol VT; Federal University of Paraná, Department of Bioprocess Engineering and Biotechnology, Centro Politécnico, 81531-990 Curitiba, Paraná, Brazil., Soccol CR; Federal University of Paraná, Department of Bioprocess Engineering and Biotechnology, Centro Politécnico, 81531-990 Curitiba, Paraná, Brazil.
Jazyk: angličtina
Zdroj: Bioresource technology [Bioresour Technol] 2020 Mar; Vol. 300, pp. 122719. Date of Electronic Publication: 2020 Jan 08.
DOI: 10.1016/j.biortech.2019.122719
Abstrakt: Microalgae are sources of nutritional products and biofuels. However, their economical processing is challenging, because of (i) the inherently low concentration of biomass in algal cultures, below 0.5%, (ii) the high-water content in the harvested biomass, above 70%; and (iii) the variable intracellular content and composition. Cell wall structure and strength vary enormously among microalgae, from naked Dunaliella cells to robust Haematococcus cysts. High-value products justify using fast and energy-intensive processes, ranging from 0.23 kWh/kg dry biomass in high-pressure homogenization, to 6 kWh/kg dry biomass in sonication. However, in biofuels production, the energy input must be minimized, requiring slower, thermal or chemical pretreatments. Whichever the primary fraction of interest, the spent biomass can be processed into valuable by-products. This review discusses microalgal cell structure and composition, how it affects pretreatment, focusing on technologies tested for large scale or promising for industrial processes, and how these can be integrated into algal biorefineries.
Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2020 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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