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Green Algae

Green Algae

Green algae, also referred to as chlorophytes, are different from red algae in having the chloroplasts containing chlorophylls a and b, which give them their distinct green hue. However, they lack phycobiliproteins, preventing them from developing the red or blue-green pigmentation seen in red algae. In terms of photosynthetic pigment composition, green algae closely resemble plants and share a close evolutionary relationship with them. Taxonomically Green algae belong to Phylum Chlorophyta in...

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Cultivation of Green Microalgae in Bubble Column Photobioreactors and an Assay for Neutral Lipids

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Multiproduct Microalgae Biorefineries Mediated by Ionic Liquids.

Michel H M Eppink¹, Sónia P M Ventura², João A P Coutinho²

¹Bioprocess Engineering, AlgaePARC, Wageningen University, P.O. Box 16 6700, AA, Wageningen, The Netherlands.

Trends in Biotechnology

|March 17, 2021

Summary

Ionic liquids (ILs) enable efficient extraction and fractionation of microalgal biomolecules. This approach supports a multiproduct biorefinery, preserving biomolecule integrity for diverse applications.

Keywords:

biomolecules biorefinery extraction ionic liquids separation

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Qualitative Characterization of the Aqueous Fraction from Hydrothermal Liquefaction of Algae Using 2D Gas Chromatography with Time-of-flight Mass Spectrometry

Qualitative Characterization of the Aqueous Fraction from Hydrothermal Liquefaction of Algae Using 2D Gas Chromatography with Time-of-flight Mass Spectrometry

Published on: March 6, 2016

Area of Science:

Biotechnology
Green Chemistry
Biorefining

Background:

Microalgal biomass is a rich source of valuable biomolecules like proteins, lipids, and pigments.
Traditional extraction methods can be harsh, compromising biomolecule integrity and limiting valorisation.
Ionic liquids (ILs) offer a tunable solvent platform for biomolecule processing.

Purpose of the Study:

To explore the use of ionic liquids for selective fractionation of microalgal biomass.
To demonstrate the potential of IL-based systems in a multiproduct biorefinery concept.
To maintain the structural integrity and bioactivity of extracted biomolecules.

Main Methods:

Utilisation of ionic liquids as solvents for direct extraction from intact microalgal cells.
Application of ILs for selective fractionation of hydrophobic (lipids, pigments) and hydrophilic (proteins, carbohydrates) components.
Comparison with aqueous biphasic systems and core-shell particle stabilised emulsions for biomass fractionation.

Main Results:

Ionic liquids facilitate mild extraction and selective fractionation of diverse microalgal biomolecules.
Hydrophobic components can be directly extracted from non-disrupted biomass using ILs.
Fragile hydrophilic components are recoverable upon further cell disruption in IL-based systems.

Conclusions:

Ionic liquids are effective solvents for the valorisation of microalgal biomass.
IL-based systems support a multiproduct biorefinery approach, preserving biomolecule quality.
Future research should focus on optimizing IL-based separation strategies for industrial applications.