1. The effect of greenhouse covering materials on phytochemical composition and antioxidant capacity of tomato cultivars.
- Author
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Ahmadi L, Hao X, and Tsao R
- Subjects
- Antioxidants metabolism, Chromatography, High Pressure Liquid, Light, Solanum lycopersicum growth & development, Solanum lycopersicum metabolism, Solanum lycopersicum radiation effects, Mass Spectrometry, Phenols chemistry, Phenols metabolism, Phytochemicals metabolism, Antioxidants chemistry, Solanum lycopersicum chemistry, Phytochemicals chemistry
- Abstract
Background: The effect of light transmission (direct and diffuse) on the phenolic compounds of five tomato cultivars was investigated under controlled conditions in greenhouses covered with different covering materials., Results: The type of covering material and type of diffusion of light simultaneously affected the reducing power of cultivars. Two-way analysis of variance showed statistically significant differences in total phenolic content for the different cultivars (P < 0.05) but not for the covering materials. Analysis by ultrahigh-performance liquid chromatography with diode array detection and liquid chromatography/tandem mass spectrometry showed the presence of major phenolic acid compounds such as chlorogenic acid, hydroxycinnamic acid/rutin, caffeic acid, ferulic acid and coumaric acid as well as flavonoid compounds such as myricetin, quercetin and naringenin. Most of the identified compounds showed a significant difference in different treatments due to both cultivar and covering material (P < 0.05). Statistical analysis showed that the type of covering material used influenced the total carotenoid and lycopene content (P < 0.05); however, the amount of lutein was not influenced by the type of covering material (P > 0.05)., Conclusion: This study showed that the use of solar energy transmission could positively affect the reducing power of cultivars and alter the biosynthesis of certain phytochemicals that are health-beneficial. Further study could lead to applications for producing greenhouse vegetables with greater health attributes. © 2018 Society of Chemical Industry., (© 2018 Society of Chemical Industry.)
- Published
- 2018
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