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In this work, we assess three different methods for the extraction of pectin from waste orange peels, using water as extracting solvent. "Hot-water", Rapid Solid Liquid Dynamic (RSLD) and microwave-assisted extractions have been compared and evaluated in terms of amount and quality of extracted pectin, as well as embodied energy. This analysis provides useful guidelines for pectin production from food waste according to green procedures, enabling the identification of acidic "hot-water" as the most sustainable extraction route.
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Benassi et al. (2021) studied this question.
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