Abstract
According to the biomass valorization pyramid, obtaining phytochemicals is one that provides the greatest added value. In addition, the valorization of biomass contributes to taking actions in favor of the environment, which is a sustainable development objective of the UN. Therefore, the extraction must be sustainable, economical, and equal to or more efficient than traditional methods. Natural deep eutectic solvents (NaDES) are composed of naturally occurring molecules that are considered a green method with optimistic projections for the future. NaDES offer customizable compositions which give rise to a wide gamut of polarities and thus extraction capabilities; most of them are also innocuous and easy to prepare. Among the highly tunable properties of NaDES is its viscosity. Coupling NaDES with other emerging methodologies such as ultrasound has been proposed to further optimize the extractability of flavonoids from agricultural biomass and agro-industrial wastes. This is thanks to the efficient NaDES penetration into resilient plant structures aided by physical processes like cavitation. Our objective is to provide the reader with the methodology to synthesize one of the NaDES that shows high capabilities to extract phytochemicals, like flavonoids, from biomass and agricultural by-products and isolate the molecules of interest through a practical and potentially useful protocol for commercial scales.
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Jiménez-Ortega, L.A., Mota-Morales, J.D., Contreras-Angulo, L.A., Heredia, J.B. (2023). Sustainable Extraction of Flavonoids from Agricultural Biomass and Agro-industrial By-products: Natural Deep Eutectic Solvent Synthesis, Extraction, and Chromatographic Analysis. In: Aguilar Gonzalez, C.N., Gómez-García, R., Kuddus, M. (eds) Food Waste Conversion. Methods and Protocols in Food Science . Humana, New York, NY. https://doi.org/10.1007/978-1-0716-3303-8_4
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