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Cell-wall disruption and lipid/astaxanthin extraction from microalgae: Chlorella and Haematococcus

Author:
Kim, Dong-Yeon, Vijayan, Durairaj, Praveenkumar, Ramasamy, Han, Jong-In, Lee, Kyubock, Park, Ji-Yeon, Chang, Won-Seok, Lee, Jin-Suk, Oh, You-Kwan
Source:
Bioresource technology 2016 v.199 pp. 300-310
ISSN:
0960-8524
Subject:
Chlorella, Haematococcus, astaxanthin, biofuels, biomass, biorefining, cell walls, energy, functional foods, lipids, microalgae, solvents, toxicity
Abstract:
Recently, biofuels and nutraceuticals produced from microalgae have emerged as major interests, resulting in intensive research of the microalgal biorefinery process. In this paper, recent developments in cell-wall disruption and extraction methods are reviewed, focusing on lipid and astaxanthin production from the biotechnologically important microalgae Chlorella and Haematococcus, respectively. As a common, critical bottleneck for recovery of intracellular components such as lipid and astaxanthin from these microalgae, the composition and structure of rigid, thick cell-walls were analyzed. Various chemical, physical, physico-chemical, and biological methods applied for cell-wall breakage and lipid/astaxanthin extraction from Chlorella and Haematococcus are discussed in detail and compared based on efficiency, energy consumption, type and dosage of solvent, biomass concentration and status (wet/dried), toxicity, scalability, and synergistic combinations. This report could serve as a useful guide to the implementation of practical downstream processes for recovery of valuable products from microalgae including Chlorella and Haematococcus.
Agid:
5266668