A simple nanocomposite photocatalyst HT-rGO/TiO2 for deoxynivalenol degradation in liquid food

Juncong Xu; Shufen Su; Xianliang Song; Shucan Luo; Shengying Ye; Wenbei Situ

doi:10.1016/j.foodchem.2022.135228

A simple nanocomposite photocatalyst HT-rGO/TiO₂ for deoxynivalenol degradation in liquid food

Food Chem. 2023 May 15:408:135228. doi: 10.1016/j.foodchem.2022.135228. Epub 2022 Dec 17.

Authors

Juncong Xu¹, Shufen Su¹, Xianliang Song¹, Shucan Luo¹, Shengying Ye¹, Wenbei Situ²

Affiliations

¹ College of Food Science, South China Agricultural University, Wushan, Guangzhou, GD 510640, China.
² College of Food Science, South China Agricultural University, Wushan, Guangzhou, GD 510640, China. Electronic address: situwenbei@scau.edu.cn.

PMID: 36549161
DOI: 10.1016/j.foodchem.2022.135228

Abstract

A simple nanocomposite photocatalyst HT-rGO/TiO₂ for deoxynivalenol (DON) degradation was synthesized by hydrothermal method to maintain the quality of cereal grains and byproducts. The characterization of HT-rGO/TiO₂ was analyzed by XRD, FTIR, Raman spectroscopy, and XPS. Moreover, according to UV-vis DRS analysis, HT-rGO/TiO₂ had a smaller band gap, indicating a wider response range to light and a higher utilized rate of quantum photons. Additionally, the results of LC-MS showed that the hydroxyl group at the C3 position, and the unsaturated bond between C9 and C10, and the epoxy group at C12 and C13 positions of DON molecule were destroyed step by step by photocatalytic degradation. These groups have active effects on the DON toxicity, which means it is successful to degrade DON in liquid-food by HT-rGO/TiO₂ photocatalyst.

Keywords: DON photodegradation; Degradation pathway; Reduced graphene oxide; TiO(2).

MeSH terms

Nanocomposites* / chemistry
Oxides* / chemistry

Substances

graphene oxide
titanium dioxide
Oxides
deoxynivalenol