ZnSnO3 based gas sensors for pyridine volatile marker detection in rice aging during storage

Jinyong Xu; Hanlin Liao; Chao Zhang

doi:10.1016/j.foodchem.2022.135204

ZnSnO₃ based gas sensors for pyridine volatile marker detection in rice aging during storage

Food Chem. 2023 May 15:408:135204. doi: 10.1016/j.foodchem.2022.135204. Epub 2022 Dec 12.

Authors

Jinyong Xu¹, Hanlin Liao², Chao Zhang³

Affiliations

¹ College of Mechanical Engineering, Yangzhou University, Yangzhou 225127, Jiangsu Province PR China.
² ICB UMR 6303, CNRS, Univ. Bourgogne Franche-Comté, UTBM, 90010 Belfort, France.
³ College of Mechanical Engineering, Yangzhou University, Yangzhou 225127, Jiangsu Province PR China. Electronic address: zhangc@yzu.edu.cn.

PMID: 36527920
DOI: 10.1016/j.foodchem.2022.135204

Abstract

This study reports the development of ZnSnO₃ based gas sensors for pyridine detection in rice aging. Pyridine is one of heterocyclic markers formed via Maillard reaction and lipid oxidation. Herein, graphitic carbon nitride (g-C₃N₄) decorated ZnSnO₃ microstructures were obtained through a template-free approach. And the sensing results reveal that 5 wt%g-C₃N₄ decorated ZnSnO₃ exhibited a high sensitivity (47.9), a short response/recovery time (14/120 s) and a low detection limit (0.45 ppm), which is due to the catalysis of g-C₃N₄ nanosheets, the decorated microstructure and the formation of heterojunctions. Meanwhile, the practical experiment demonstrates that the sensitivity towards volatiles generated from Japonica rice aging is 48.7, which is around 4 and 2.5 times higher than those of Indica rice and Polished Glutinous rice, indicating that the sensor has anticipated application in the development of a high-performance E-nose for the quality inspection of rice and other products.

Keywords: Gas sensor; Pyridine; Quality inspection; Rice aging.

MeSH terms

Oryza*
Pyridines

Substances

Pyridines