期刊
CHEMOSPHERE
卷 238, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2019.124648
关键词
Deoxynivalenol; Toxicity assessment; In vitro; Wastewater treatment; Photocatalysis; Upconversion nanoparticles@TiO2
资金
- National Natural Science Fund of China [NSFC 31772086]
- Jiangsu Agriculture Science and Technology Innovation Fund [CX(18)2025]
- Jiangsu Planned Projects for Postdoctoral Research Funds [1601087B]
- Young Elite Scientists Sponsorship Program by CAST [2017QNRC001]
- Fundamental Research Funds for the Central Universities [JUSRP21826]
- National First-class Discipline Program of Food Science and Technology [JUFSTR20180303]
- Distinguished Professor Program of Jiangsu Province
Deoxynivalenol (DON) is one of the most globally prevalent mycotoxins mainly produced by Fusariqm species. It can cause pollution to water environmental quality due to its water solubility. Therefore, it is necessary to develop a green and efficient detoxification technology for DON. More importantly, the toxicity of the degradation products should be assessed. Photocatalytic degradation technology has attracted increasing attention in the field of pollutants treatment, especially for wastewater treatment. Herein, the as-prepared NaYF4:Yb,Tm@TiO2 composite (UCNP@TiO2) was employed as a novel photocatalyst for the NIR-enhanced photocatalytic degradation of DON. Three intermediate products were identified by using the ESI/MS analysis and secondary mass spectrogram, with the m/z values of 329.399, 311.243 and 280.913, respectively. Furthermore, the in vitro safety of the product mixtures with various degradation time (30 min, 60 min, 90 min and 120 min) were evaluated through the influences on cell viability, cell morphology, cell cycle, intracellular reactive oxygen species (ROS) level, cell apoptosis and antioxidant capacity of HepG2 cells. There were no significant differences in these investigated indicators between the control (free of DON) and 120 min products treatment. Overall, the results indicated that the toxicity of degradation products after 120 min irradiation was much lower and even nontoxic than that of DON. (C) 2019 Elsevier Ltd. All rights reserved.
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