Journal
BIORESOURCE TECHNOLOGY
Volume 244, Issue -, Pages 1317-1328Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2017.06.038
Keywords
Microalgae; Cell disruption; Lipid extraction; Cell wall; Biorefinery
Funding
- Advanced Biomass R&D Center (ABC) - Ministry of Science, ICT and Future Planning [ABC-2012M3A6A205388]
- Korea Institute of Energy Research (KIER) [B7-2437-01]
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The microalgae-based biorefinement process has attracted much attention from academic and industrial researchers attracted to its biofuel, food and nutraceutical applications. In this paper, recent developments in cell-disruption and lipid-extraction methods, focusing on four biotechnologically important microalgal species (namely, Chlamydomonas, Haematococcus, Chlorella, and Nannochloropsis spp.), are reviewed. The structural diversity and rigidity of microalgal cell walls complicate the development of efficient downstream processing methods for cell-disruption and subsequent recovery of intracellular lipid and pigment components. Various mechanical, chemical and biological cell-disruption methods are discussed in detail and compared based on microalgal species and status (wet/dried), scale, energy consumption, efficiency, solvent extraction, and synergistic combinations. The challenges and prospects of the downstream processes for the future development of eco-friendly and economical microalgal biorefineries also are outlined herein. (C) 2017 Elsevier Ltd. All rights reserved.
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