Antioxidant content and ascorbate metabolism in cherry tomato exocarp in relation to temperature and solar radiation
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Rosales, Miguel A.; Ruiz, Juan Manuel; Hernández Rodríguez, Joaquín; Soriano, Teresa; Castilla Prados, Nicolás; [et al.]Fecha
2006-06-19Resumen
Considering the economic importance of the tomato and its nutritional benefits to human health, a study was made of how two different environmental factors (temperature and overall solar radiation) influence the nutritional quality of cherry tomatoes during the plant full production cycle. Solanum lycopersicum L. cv. Naomi plants were grown in an experimental greenhouse. Three fruit samples were taken over the full production period: first sampling at the beginning of harvest (7 January 2004), second at mid-harvest (22 March 2004) and third at harvest end (30 May 2004). Values for temperature and overall accumulated solar radiation peaked at a maximum in the third sampling, without lowering the yield with respect to previous samplings. Regarding the antioxidant activity in the exocarp fraction of the cherry tomato fruits, the results showed that the increase in temperature and solar radiation diminished the lycopene and β-carotene contents in the third sampling, inducing defective pigm...
Palabra/s clave
greenhouse crop nutrition
antioxidants
ascorbate
cherry tomato
exocarp
lipid peroxidation
solar radiation
temperature