Biocompatible Ionic Liquids for Green Valorization of Raspberry Pomace
Raspberry is a high-value berry fruit characterized by an intense flavor and notable nutritional and health-promoting properties, largely due to its high content of bioactive compounds (polyphenols, flavonoids, anthocyanins). These bioactives are associated with anti-inflammatory, antioxidant, and anti-diabetic effects. However, the fragile nature and short shelf life of raspberries often necessitate their processing into products like juices, wines, jams, and syrups, generating large quantities of raspberry pomace (mainly seeds and residual pulp) that are typically treated as low-value agricultural waste. In this work, raspberry pomace is investigated as a renewable source of valuable bioactive compounds using an environmentally benign extraction strategy. A series of hydrophilic and hydrophobic choline-based ionic liquids were synthesized and evaluated as alternative, low-toxicity solvents. Direct extraction from the solid matrix was performed under ultrasound-assisted conditions. Quantification of bioactive compounds were performed spectrophotometrically or HPLC analysis. The results demonstrate that choline-based ionic liquids enable efficient and green extraction of bioactives from raspberry pomace, confirming their suitability as alternative solvents for the valorization of berry-processing residues. Overall, this study highlights the potential of converting an underutilized agro-industrial by-product into a valuable source of health-relevant compounds, thereby supporting more sustainable and circular practices in the berry processing sector.
engleski
2026
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Ionic liquids, Raspberry pomace, Valorization
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o:2594 | Radovi nastavnika i saradnika Instituta za proučavanje lekovitog bilja "Dr Josif Pančić" |