Contents of phenolics and carotenoids in tomato grown under polytunnels with different UV-transmission rates

Authors : BOJANA ZIVANOVIC, MARIJA VIDOVIC, SONJA MILIC KOMIC, LJUBINKO JOVANOVIC, PREDRAG KOLARZ, FILIS MORINA, SONJA VELJOVIC JOVANOVIC

Pages : 113-120

View : 8 | Download : 9

Publication Date : 2017-04-01

Article Type : Research Paper

Abstract :Tomato insert ignore into journalissuearticles values(Solanum lycopersicum L.); is among the economically most important vegetables in Europe, valued for its bioactive properties due to significant contents of vitamins, carotenoids, and phenolic compounds. In this study, the tomato cultivar Big Beef F1 was grown in the open field insert ignore into journalissuearticles values(OF); and under polytunnels in central Serbia during 3 years. Polytunnels were covered with two foils insert ignore into journalissuearticles values(both with 57% reduced photosynthetic active radiation, PAR); differing in UV-A and UV-B transmittance. The aim of our work was to determine the influence of light conditions on accumulation of phytonutrients insert ignore into journalissuearticles values(carotenoids and phenolics); in the peel and flesh of ripe tomato fruits. The amount of effective antioxidants, caffeic acid, and quercetin insert ignore into journalissuearticles values(phenolics with ortho-dihydroxy substitution); in the peel was the highest in tomato fruits grown in the OF insert ignore into journalissuearticles values(maximal PAR and UV-A and UV-B radiation);. Moreover, the content of leaf epidermal flavonoids was the highest in the OF. The content of lycopene and β-carotene in the flesh of tomato fruit was higher under the polytunnel with higher UV-transmittance. Our results showed that selection of the right light conditions insert ignore into journalissuearticles values(quality and intensity); for tomato production has a significant effect on the accumulation of beneficial phenolics and carotenoids.
Keywords : Phytonutrients, flavonoids, solar radiation, protected cultivation, Solanum lycopersicum L, UV radiation