Abstract
Tomato fruit is rich in antioxidant compounds such as lycopene and β-carotene. The beneficial effects of the bioactive compounds of tomato fruit have been documented as anticancer activities. The objective of this research was to determine whether arsenic (As) causes changes in the content of antioxidant compounds in tomato fruits and whether Silicon nanoparticles (SiO2 NPs) positively influence them. The effects on fruit quality and non-enzymatic antioxidant compounds were determined. The results showed that As decreased the oxide-reduction potential (ORP), while lycopene and β-carotene were increased by exposure to As at a low dose (0.2 mg L−1), and proteins and vitamin C decreased due to high doses of As in the interaction with SiO2 NPs. A dose of 250 mg L−1 of SiO2 NPs increased glutathione and hydrogen peroxide (H2O2), and phenols decreased with low doses of As and when they interacted with the NPs. As for the flavonoids, they increased with exposure to As and SiO2 NPs. The total antioxidant capacity, determined by the ABTS (2,2´-azino-bis[3-ethylbenzthiazolin-6-sulfonic acid]) test, showed an increase with the highest dose of As in the interaction with SiO2 NPs. The application of As at low doses induced a greater accumulation of bioactive compounds in tomato fruit; however, these compounds decreased in high doses as well as via interaction with SiO2 NPs, indicating that there was an oxidative burst.
Highlights
Tomato is the second most important crop in the world from an economic point of view [1].tomato fruit is important in the human diet because it can provide vitamins and a wide range of bioactive molecules [2], such as vitamins C and E, flavonoids, and phenols [3]
Soluble solids, there was a slight increase of 5.76% compared to the control with the treatment of 250 mg L−1 of SiO2 NPs, and with 0.4 mg L−1 of As in the interaction with 1000 mg L−1 of SiO2 NPs
The results obtained in this research study highlight the importance of the stressful effect that arsenic can have on tomato fruit and how it modifies the antioxidant compounds
Summary
Tomato is the second most important crop in the world from an economic point of view [1].tomato fruit is important in the human diet because it can provide vitamins and a wide range of bioactive molecules [2], such as vitamins C and E, flavonoids, and phenols [3]. Lycopene is one of the strongest natural antioxidants known and is the main carotene in ripe tomatoes [4], and together with β-carotene, it is effective in eliminating peroxyl radicals [5]. There are many biotic and abiotic factors that influence the growth and development of a tomato crop, which can modify the quality of the fruit One of these is arsenic (As), a highly toxic metalloid for plants and humans [8,9]. The capacity of a tomato plant to absorb and translocate As is of vital importance, since the fruit is the organ of consumption [15]
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