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Ni JB, Jia XF, Zhang JY, Ding CJ, Tian WL, Peng WJ, Zielinska S, Xiao HW, Fang XM. Efficient degradation of imidacloprid by surface discharge cold plasma: Mechanism of interaction between ROS and molecular structure and evaluation of residual toxicity. J Hazard Mater 2024; 465:133066. [PMID: 38042007 DOI: 10.1016/j.jhazmat.2023.133066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 11/01/2023] [Accepted: 11/21/2023] [Indexed: 12/04/2023]
Abstract
Incorrect use of neonicotinoid pesticides poses a serious threat to human and pollinator health, as these substances are commonly present in bee products and even drinking water. To combat this threat, the study developed a new method of degrading the pesticide imidacloprid using surface discharge cold plasma oxidation technology. The study showed that this method achieved a very high efficiency of imidacloprid degradation of 91.4%. The main reactive oxygen species (H2O2, O3, ·OH, O2-, 1O2) effectively participated in the decomposition reaction of imidacloprid. Reactive oxygen species were more sensitive to the structure of the nitroimine group. Density functional theory (DFT) further explored the sites of reactive oxygen species attack on imidacloprid and revealed the process of energy change of attacking imidacloprid. In addition, a degradation pathway for imidacloprid was proposed, mainly involving reactive oxygen species chemisorption, a ring-opening intermediate, and complete cleavage of the nitroimine group structure. Model predictions indicated that acute oral and developmental toxicity were significantly reduced after cold plasma treatment, as confirmed by insect experiments. Animal experiments have shown that plasma treatment reduces imidacloprid damage to mice hippocampal tissue structure and inhibits the reduction of brain-derived neurotrophic factor content, thus revealing the detoxification mechanism of the body.
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Affiliation(s)
- Jia-Bao Ni
- State Key Laboratory of Resource Insects, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, 1 Xiangshan Beigou, Beijing 100093, China; College of Engineering, China Agricultural University, P.O. Box 194, 17 Qinghua Donglu, Beijing 100083, China
| | - Xiao-Fang Jia
- School of Physics, Beihang University, Beijing, China
| | | | - Chang-Jiang Ding
- College of Science, Inner Mongolia University of Technology, Hohhot, China
| | - Wen-Li Tian
- State Key Laboratory of Resource Insects, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, 1 Xiangshan Beigou, Beijing 100093, China
| | - Wen-Jun Peng
- State Key Laboratory of Resource Insects, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, 1 Xiangshan Beigou, Beijing 100093, China
| | - Sara Zielinska
- Faculty of Mechanical and Power Engineering, Wroclaw University of Science and Technology, Wrocław, Poland
| | - Hong-Wei Xiao
- College of Engineering, China Agricultural University, P.O. Box 194, 17 Qinghua Donglu, Beijing 100083, China.
| | - Xiao-Ming Fang
- State Key Laboratory of Resource Insects, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, 1 Xiangshan Beigou, Beijing 100093, China.
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Zhang AA, Ni JB, Martynenko A, Chen C, Fang XM, Ding CJ, Chen J, Zhang JW, Xiao HW. Electrohydrodynamic drying of citrus (Citrus sinensis L.) peel: Comparative evaluation on the physiochemical quality and volatile profiles. Food Chem 2023; 429:136832. [PMID: 37453333 DOI: 10.1016/j.foodchem.2023.136832] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 05/29/2023] [Accepted: 07/05/2023] [Indexed: 07/18/2023]
Abstract
Based on the concept of circular economy, citrus peel was considered a valuable source of bioactive compounds for high-value foods. Electrohydrodynamic (EHD) drying is a novel technology appropriated for the dehydration of heat-sensitive products such as citrus peel. In current work, EHD drying of citrus peel was performed based on alternating current (AC) or direct current (DC) sources at various voltage levels (9, 18, 27, 36, and 45 kV). The effect of EHD on drying characteristics, water retention capacity, enzyme inactivation, phytochemical contents (phenolic compounds and carotenoids), and volatile compounds of citrus peel were evaluated and compared. Results showed that the drying time in the AC electric field was shorter compared to DC electric field at the same applied voltages due to the polarization layer formed by unipolar charges. The applied voltage determined electric field strength as well as the degree of tissue collapse and cell membrane rupture. EHD elucidated the transformation and degradation of phytochemicals including phenolic compounds, carotenoids, and volatile composition in proportion to the applied voltage. The findings indicate that EHD drying with AC improves drying behaviors, inactivates enzymes, and retains the phytochemical properties of citrus peel.
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Affiliation(s)
- An-An Zhang
- College of Engineering, China Agricultural University, P.O. Box 194, 17 Qinghua Donglu, Beijing 100083, China
| | - Jia-Bao Ni
- College of Engineering, China Agricultural University, P.O. Box 194, 17 Qinghua Donglu, Beijing 100083, China
| | - Alex Martynenko
- Department of Engineering, Faculty of Agriculture, Dalhousie University, Truro, Nova Scotia, Canada
| | - Chang Chen
- Department of Food Science, Cornell University, 630 West North Street, Geneva, NY 14456, USA
| | - Xiao-Ming Fang
- Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, 1 Xiangshan Beigou, Beijing 100093, China
| | - Chang-Jiang Ding
- College of Science, Inner Mongolia University of Technology, Hohhot, China
| | - Jun Chen
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Jian-Wei Zhang
- College of Engineering, China Agricultural University, P.O. Box 194, 17 Qinghua Donglu, Beijing 100083, China
| | - Hong-Wei Xiao
- College of Engineering, China Agricultural University, P.O. Box 194, 17 Qinghua Donglu, Beijing 100083, China.
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Yu JH, Wei YG, Ding CJ, Du HG, Yan SG, Guo HY. Hydrothermal Synthesis, Crystal Structure and Optical Properties of [M(en)3](ndt)·H2O (M=NiII, CoII, MnII and ndt=1,5-Naphthalenedithiolate). CHINESE J CHEM 2006. [DOI: 10.1002/cjoc.200690132] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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