Postharvest UV-B and photoperiod with blue + red LEDs as strategies to stimulate carotenogenesis in bell peppers
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Grupo de investigación en Postrecolección y RefrigeraciónÁrea de conocimiento
Tecnología de los AlimentosFecha de publicación
2021Editorial
MDPICita bibliográfica
Martínez-Zamora, L.; Castillejo, N.; Artés-Hernández, F. Postharvest UV-B and Photoperiod with Blue + Red LEDs as Strategies to Stimulate Carotenogenesis in Bell Peppers. Appl. Sci. 2021, 11, 3736. https://doi.org/10.3390/app11093736Palabras clave
Capsicum annum L.Ultraviolet
Lighting emitting diode
Abiotic stress
Bioactive compounds
Nutraceuticals
Antioxidants
Shelf life
Resumen
Background: Our objective was to evaluate carotenoid accumulation in bell peppers during shelf life under different light conditions. Methods: Fruit stored for 6 d at 7 °C received a 9 kJ m−2 UV-B treatment, while non-UV-treated were used as control (CTRL). Subsequently, all peppers were disposed for a retail sale period of 4 d at 20 °C with a photoperiod of 14 h under fluorescent light (FL) + 10 h under darkness (D), FL, or blue + red LEDs (BR LED). Results: Total antioxidant capacity (TAC) was increased by the UV-B treatment and the photoperiods supplemented with FL and BR LED, which was directly related to the carotenoid content. In fact, CTRL peppers (225 mg β-carotene kg−1) under FL+BR LED showed an increase of ~33% of 13-cis-β-carotene, ~24% of all-trans-β-carotene, and ~27.5% of 9-cis-β-carotene compared to FL + D and FL + FL. Capsaicinoids showed an increase by ~22%, ~38%, and ~27% in the content of capsanthin, capsanthin laurate, and capsanthin esters, respectively, after the ...
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