INVESTIGADORES
CIVELLO Pedro Marcos
artículos
Título:
Effect of visible light treatments on postharvest senescence of broccoli (Brassica oleracea L.).
Autor/es:
BÜCHERT A; GÓMEZ LOBATO ME; VILLARREAL NM; CIVELLO, PM; MARTÍNEZ GA
Revista:
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
Editorial:
JOHN WILEY & SONS LTD
Referencias:
Lugar: LOndres; Año: 2011 vol. 91 p. 355 - 361
ISSN:
0022-5142
Resumen:
Background: Broccoli (Brassica oleracea L.) is a rapidly perishable
vegetable crop. Several postharvest treatments have been applied in
order to delay de-greening. Since light has been shown to have an effect
on pigment accumulation during development and darkness is known to
induce senescence, the effect of continuous and periodic exposure to
low-intensity white light at 22 °C on postharvest senescence of broccoli
heads was assayed. Results: Exposure to a constant dose of 12 μmol m -2 s -1
was selected as the most suitable treatment and was employed for
subsequent experiments. During the course of the treatments, hue and L*
values as well as chlorophyll content and visual observation of florets
indicated an evident delay in yellowing in treated samples compared with
controls. No statistically significant differences in total protein
content were found, but soluble protein content was higher in treated
samples. Total and reducing sugar as well as starch levels decreased
during postharvest senescence, with lower values in control samples.
Conclusion: The results of this study indicate that storage under
continuous low-intensity light is an efficient and low-cost treatment
that delays postharvest senescence while maintaining the quality of
harvested broccoli florets. © 2010 Society of Chemical Industry.