Photocatalysis and degradation products identification of deoxynivalenol in wheat using upconversion nanoparticles@TiO2 composite

Shijia Wu; Fang Wang; Qian Li; Jing Wang; You Zhou; Nuo Duan; Sobia Niazi; Zhouping Wang

doi:10.1016/j.foodchem.2020.126823

Photocatalysis and degradation products identification of deoxynivalenol in wheat using upconversion nanoparticles@TiO₂ composite

Food Chem. 2020 Apr 15:323:126823. doi: 10.1016/j.foodchem.2020.126823. Online ahead of print.

Authors

Shijia Wu¹, Fang Wang², Qian Li², Jing Wang³, You Zhou², Nuo Duan¹, Sobia Niazi², Zhouping Wang⁴

Affiliations

¹ State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi 214122, China.
² School of Food Science and Technology, Jiangnan University, Wuxi 214122, China.
³ China Rural Technology Development Center, Beijing 100045, China.
⁴ State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi 214122, China; International Joint Laboratory on Food Safety, Jiangnan University, Wuxi 214122, China. Electronic address: wangzp@jiangnan.edu.cn.

PMID: 32330648
DOI: 10.1016/j.foodchem.2020.126823

Abstract

Deoxynivalenol (DON) is one of the most common contaminants of cereal grains. Efficient and environmental-friendly technology to eliminate DON is important for food safety and environmental protection. In this work, upconversion nanoparticles (UCNP) coated with titanium dioxide (TiO₂) photocatalysts were synthesized. Then, a photocatalytic experiment was performed to test the impact of NaYF₄:Yb,Tm@TiO₂ of DON degradation. Our results showed the DON degradation rate at 10 μg/mL under simulated sunlight using NaYF₄:Yb,Tm@TiO₂ (6 mg/mL) approached 100% within 60 min at pH 8.0. UPLC-Q-TOF MS was used to monitor the degradation process and three degradation products were identified, namely C₁₅H₂₀O₈, C₁₅H₂₀O₇ and C₁₅H₂₀O₅. Subsequently, we studied the photocatalytic degradation of DON in wheat, providing a theoretical basis for photocatalytic degradation of contaminated grain samples. This study demonstrated that UCNP@TiO₂ photocatalysis has the potential for detoxification in food security applications.

Keywords: Deoxynivalenol; Photocatalysis; Simulated sunlight; Titanium dioxide; Upconversion nanoparticles; Wheat.