Abstract
Ionic liquids (ILs) have been proved as promising substituents of the flammable, volatile, and toxic organic solvents in numerous processes. This chapter considers the role of ILs in the extraction of natural products from their native sources and represents a comprehensive overview on the recent achievements in the IL-assisted solid-liquid extractions of secondary metabolites from plant matrices. By analyzing the similarities and differences between the ILs and molecular solvents, important factors that influence the extraction efficiency are discussed, and some general conclusions regarding the advantages and disadvantages of the use of ILs are emphasized. The effect of the IL structure on the extraction efficiency and the possible extraction mechanism and the approaches for both IL recycling and solute recovery after extraction are also discussed.
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Acknowledgments
The author would like to dedicate this work to Professor Willi Kantlehner, on the occasion of his 70th birthday, with gratitude for his guidance into the field of ionic liquids.
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Bogdanov, M.G. (2014). Ionic Liquids as Alternative Solvents for Extraction of Natural Products. In: Chemat, F., Vian, M. (eds) Alternative Solvents for Natural Products Extraction. Green Chemistry and Sustainable Technology. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-43628-8_7
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