Producción CyT
Artículo
Autoría
Favre, Noelia
;
BÁRCENA, ALEJANDRA
;
Vera Bahima, José
;
MARTINEZ, GUSTAVO ADOLFO
;
COSTA, MARIA LORENZA
Fecha
2018
Editorial y Lugar de Edición
Elsevier Science
Revista
POSTHARVEST BIOLOGY AND TECHNOLOGY,
vol. 142
(pp. 107-114)
Elsevier Science
Resumen
Información suministrada por el agente en
SIGEVA
Visible light irradiance may be a useful technology to delay postharvest senescence of green vegetables. In this work, we studied the effects of low-intensity white, red and far red light pulses on postharvest senescence of broccoli stored in the dark at 20 °C. Daily exposure for 2 h to 20–25 ?mol m?2 s?1 of white light delayed yellowing and retained chloroplast components (chlorophyll and soluble proteins). The utilized light intensity was insufficient to re-initiated photosynthesis ...
Visible light irradiance may be a useful technology to delay postharvest senescence of green vegetables. In this work, we studied the effects of low-intensity white, red and far red light pulses on postharvest senescence of broccoli stored in the dark at 20 °C. Daily exposure for 2 h to 20–25 ?mol m?2 s?1 of white light delayed yellowing and retained chloroplast components (chlorophyll and soluble proteins). The utilized light intensity was insufficient to re-initiated photosynthesis since total sugar content was lower than initials in irradiated florets. Light treatment resulted in a slower loss of sugars in comparison with the untreated samples, but was not affected by light quality. The effects of red light treatment on chlorophyll a and soluble protein degradation were similar to white light, and opposite to far red light. However, these treatments did not delay chlorophyll b degradation, suggesting that phytochromes could be involved in molecular mechanism of chlorophyll a and soluble protein degradation, but not of chlorophyll b.
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Palabras Clave
SUGARSRED LIGHTPROTEINSCHLOROPHYLLWHITE LIGHT
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