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Publication
Phytochemical characterization and bioactive properties of strawberries treated by gamma radiation
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Advisor(s)
Abstract(s)
Strawberry is one of the most consumed berries worldwide and the compounds on its extracts present numerous health benefits, including antioxidant potential. In this work, the effects of processing strawberries by gamma radiation at 2 kGy and 7 days storage at 4 °C were evaluated regarding their phenolic profile and bioactive properties. From the HPLC–DAD-ESI/MS analysis, pelargonidin-3-O-glucoside was the main compound identified in extracts from non-stored and non-irradiated strawberries (1040 ± 53 mg/100 g dry weight). Gamma radiation and refrigerated storage preserved or improved the antioxidant activity of the strawberry extracts, while keeping the phenolic and ascorbic acid contents. Furthermore, all strawberry extracts exhibited high α-glucosidase inhibition, whereas α-amylase inhibition seemed to be enhanced by gamma radiation treatment at 2 kGy. These findings can provide useful information to develop new ingredients from irradiated fruits to be used by industries, with high added value especially as natural and promising antidiabetic agents.
Description
Keywords
Food irradiation Strawberry Phenolic compounds Antioxidant capacity Antidiabetic activity Antimicrobial activity
Pedagogical Context
Citation
Barkaoui, Salma; Madureira, Joana; Dias, Maria Inês; Barros, Lillian; Ferreira, Isabel C.F.R.; Margaça, Fernanda M. A.; Boudhrioua, Nourhène; Cabo Verde, Sandra. (2025). Phytochemical characterization and bioactive properties of strawberries treated by gamma radiation. European Food Research and Technology. ISSN 1438-2377. 251:5, p. 693-704
Publisher
Springer