介电阻挡放电冷等离子体降解玉米赤霉烯酮：动力学与机理

Zearalenone Degradation by Dielectric Barrier Discharge Cold Plasma: The Kinetics and Mechanism.

作者信息

Zheng Zhe, Huang Yousheng, Liu Liping, Chen Yi, Wang Yuanxing, Li Chang

机构信息

State Key Laboratory of Food Science and Technology, China-Canada Joint Laboratory of Food Science and Technology (Nanchang), Nanchang University, Nanchang 330047, China.

Jiangxi Institute of Analysis and Testing, Nanchang 330029, China.

出版信息

Foods. 2022 May 20;11(10):1494. doi: 10.3390/foods11101494.

DOI:10.3390/foods11101494

PMID:35627062

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9141501/

Abstract

In this study, dielectric barrier discharge (DBD) cold plasma was used to degrade zearalenone and the efficiency of degradation were evaluated. In addition, the degradation kinetics and possible pathway of degradation were investigated. The results showed that zearalenone degradation percentage increased with increasing voltage and time. When it was treated at 50 KV for 120 s, the degradation percentage could reach 98.28%. Kinetics analysis showed that the degradation process followed a first-order reaction, which fitted the exponential function model best (R² = 0.987). Meanwhile, liquid chromatographywith quadrupole time-of-flight mass spectrometry (Q-TOF LC/MS) was used to analyze the degradation products, one major compound was identified. In this study, the reactive species generated in cold plasma was analyzed by Optical Emission Spectroscopy (OES) and the free radicals were detected by Electron Spin Resonance (ESR). This study could provide a theoretical basis for the degradation of zearalenone to a certain extent.

摘要

在本研究中，采用介质阻挡放电（DBD）冷等离子体降解玉米赤霉烯酮，并评估其降解效率。此外，还研究了降解动力学和可能的降解途径。结果表明，玉米赤霉烯酮的降解率随电压和时间的增加而提高。在50 kV下处理120 s时，降解率可达98.28%。动力学分析表明，降解过程符合一级反应，最适合指数函数模型（R² = 0.987）。同时，采用液相色谱-四极杆飞行时间质谱联用仪（Q-TOF LC/MS）分析降解产物，鉴定出一种主要化合物。在本研究中，通过光发射光谱（OES）分析冷等离子体中产生的活性物种，并通过电子自旋共振（ESR）检测自由基。本研究可为玉米赤霉烯酮的降解提供一定的理论依据。