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ORIGINAL ARTICLE
Effect of the Ultraviolet C Light-Emitting Diode Treatment on the Quality of Soil-Grown and Pot-Grown Red Raspberries
1
Dipartimento di Scienze Agrarie, Forestali e Alimentari – DISAFA, Università degli studi di Torino/Department of Agricultural, Forest and Food Science, University of Turin, Largo Paolo Braccini, 2, 10095 Grugliasco (TO), Italy
Submission date: 2023-04-18
Acceptance date: 2023-10-24
Online publication date: 2023-11-14
Publication date: 2023-11-14
Corresponding author
Nicole R. Giuggioli
Department of Agricultural Forest and Food Science-DISAFA, University of Turin, Largo Paolo Braccini 2, 10095, Grugliasco-TO, Italy
Department of Agricultural Forest and Food Science-DISAFA, University of Turin, Largo Paolo Braccini 2, 10095, Grugliasco-TO, Italy
Pol. J. Food Nutr. Sci. 2023;73(4):345-353
KEYWORDS
TOPICS
ABSTRACT
Red raspberries (Rubus idaeus L.) are often chosen by consumers for their flavour, taste, and health-promoting properties A relevant issue related to these fruits is their high perishability. The aim of this study was to investigate the effect of the ultraviolet C light-emitting diode (UVC-LED) treatment on soil-grown and pot-grown raspberries in extending their shelf-life, maintaining their high quality throughout the preservation period, and improving features related to their phenolic compound content. The UVC-LED treatment increased the total phenolic content (158 to 200 mg GAE/100 g) and ferric reducing antioxidant power (55.3 to 78.6 mmol Fe2+/kg) of the pot-grown raspberries when the UVC-LED treatment was followed by storage in a climate-controlled room (20°C). Total anthocyanin content did not increase significantly compared to the control samples. Contrary to expectations, no effect of reducing the microbial count after storage was observed due to the exposure of raspberries to the UVC-LED radiation. The positive outcomes derived from the analyses of bioactive compounds may be implemented in further studies on the same matrix to better manage the treatment and its conditions, such as the exposure time, the distance from the LED lamps, and the UVC-rays’ dose, in order to find the best combination in terms of efficacy and efficiency.
ACKNOWLEDGEMENTS
The authors express their gratitude to the staff of MOVE2WEB S.r.l. for providing the UV-LED furniture prototype.
FUNDING
The research received no external funding.
CONFLICT OF INTEREST
Authors declare no conflict of interests.
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