Supported Ionic Liquids Used as Chromatographic Matrices in Bioseparation-An Overview

abstract

Liquid chromatography plays a central role in biomanufacturing, and, apart from its use as a preparative purification strategy, either in biopharmaceuticals or in fine chemicals industries, it is also very useful as an analytical tool for monitoring, assessing, and characterizing diverse samples. The present review gives an overview of the progress of the chromatographic supports that have been used in the purification of high-value products (e.g., small molecules, organic compounds, proteins, and nucleic acids). Despite the diversity of currently available chromatographic matrices, the interest in innovative biomolecules emphasizes the need for novel, robust, and more efficient supports and ligands with improved selectivity. Accordingly, ionic liquids (ILs) have been investigated as novel ligands in chromatographic matrices. Given herein is an extensive review regarding the different immobilization strategies of ILs in several types of supports, namely in silica, Sepharose, and polymers. In addition to depicting their synthesis, the main application examples of these supports are also presented. The multiple interactions promoted by ILs are critically discussed concerning the improved selectivity towards target molecules. Overall, the versatility of supported ILs is here considered a critical point to their exploitation as alternatives to the more conventional liquid chromatographic matrices used in bioseparation processes.

keywords

SOLID-PHASE EXTRACTION; AQUEOUS BIPHASIC SYSTEMS; STATIONARY-PHASE; AFFINITY-CHROMATOGRAPHY; HYDROPHILIC INTERACTION; PLASMID DNA; PREPARATIVE CHROMATOGRAPHY; GRAFTED SILICA; PURIFICATION; SEPARATION

subject category

Biochemistry & Molecular Biology; Chemistry

authors

Bernardo, SC; Carapito, R; Neves, MC; Freire, MG; Sousa, F

our authors

acknowledgements

1 This work was developed within the scope of the project CICECO-Aveiro Institute of Materials, UIDB/50011/2020 & UIDP/50011/2020, and the CICS-UBI projects UIDB/00709/2020 & UIDP/00709/2020 financed by national funds through the Portuguese Foundation for Science and Technology/MCTES. This work was funded by the projects POCI-01-0145-FEDER-029496 (PUREmiRSILs) and IonCytDevice (POCI-01-0145-FEDER-031106, PTCD/BTA-BTA/31106/2017) funded by FEDER, through COM-PETE2020-Programa Operacional Competitividade e Internacionalizacao (POCI), and by Ynational funds (OE), through FCT/MCTE.

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