Sustainability | Free Full-Text | Polyphenol Extraction by Different Techniques for Valorisation of Non-Compliant Portuguese Sweet Cherries towards a Novel Antioxidant Extract


At present, there’s particular curiosity within the restoration of polyphenols from non-compliant fruits that don’t have any market worth; efforts to search out value-added options for these meals areas are a key possibility for a sustainable bio-economy. Saco cherries are a conventional Portuguese cherry selection, and though they’re a nutritionally essential meals, wealthy in highly effective dietary polyphenols, vital quantities of those cherries usually are not offered attributable to their small dimension. On this context, this work aimed to pick the very best methodology to supply novel antioxidant polyphenol-rich extracts from low calibre and non-compliant Saco cherries. Based mostly on the outcomes, microwaves-assisted extraction (MAE) allowed us to acquire a polyphenol-rich extract with a excessive antioxidant capability (50.46 ± 1.58 mg Trolox equal (TE)/g dry extract (DE) by oxygen radical absorbance capability (ORAC), 10.88 ± 0.38 mg ascorbic acid equal (AA)/g DE by 2-azinobis-3-ethylbenzothiazoline-6-sulphonic acid (ABTS), and 9.58 ± 0.42 mg TE/g DE by 2,2-diphenyl-1-picrylhydrazyl (DPPH)) and a excessive content material of polyphenols, specifically, hydroxycinnamic acids (neochlorogenic and p-coumaric acids) and anthocyanins (cyanidin-3-rutinoside and cyanidin-3-glucoside), in contrast with these of typical extractions with high and low temperature and ultrasound-assisted extraction. The antioxidant extract produced from MAE might be a brand new different for the valorisation of non-compliant cherries since these extracts proved to be a practical ingredient as a result of excessive content material of antioxidants, that are linked to the prevention of ailments.
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