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Fernandes Mendonça Mota T, Lima Oliveira W, Gonçalves S, Wust Vasconcelos M, Silvia Beatriz Miglioranza K, Castilhos Ghisi N. Are the issues involving acephate already resolved? A scientometric review. ENVIRONMENTAL RESEARCH 2023; 237:117034. [PMID: 37673123 DOI: 10.1016/j.envres.2023.117034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 08/22/2023] [Accepted: 08/30/2023] [Indexed: 09/08/2023]
Abstract
Acephate is a pesticide classified as moderately toxic, and its metabolite methamidophos is highly toxic for mammals and birds; even so, it is one of the most used insecticides in pest control for agricultural and domestic use. Acephate toxicity affects both target and non-target organisms and causes serious damage to the environment. There are several studies on different perspectives of acephate, such as monitoring, toxicity, and modeling. In this sense, this research aims to identify the structure of intellectual production on acephate and analyze the gaps and trends of scientific production on acephate through a scientometric analysis. The data was obtained from the Web of Science database, and after the refinement, 1.085 documents were used. A temporal pattern of the main research objectives is displayed. Most selected studies evaluated acephate efficiency, followed by toxicity and residue detection methods. The USA, China, India, Brazil, and Japan had the highest number of publications on acephate. The keywords most utilized were pesticides, toxicity, insecticide resistance, and residue. Research involving acephate requires greater attention from areas such as ecotoxicology, biochemistry, genetics, and biotechnology. There needed to be more discussions on chronic toxicity, genotoxicity, and cytotoxicity. Moreover, few studies about metabolic and biochemical pathways and genes related to acephate action and biodegradation were scarce.
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Affiliation(s)
- Thaís Fernandes Mendonça Mota
- Graduate Program in Biotechnology (PPGBIOTEC), Universidade Tecnológica Federal Do Paraná (UTFPR), Campus Dois Vizinhos, Estrada para Boa Esperança S/n, km 04, Comunidade São Cristóvão, P.O. Box 157, 85660-000, Dois Vizinhos, Paraná, Brazil; Collegiate of Biological Sciences, Universidade Estadual Do Paraná (UNESPAR), Campus Paranavaí, Avenida Gabriel Esperidião, S/n, Jardim Morumbi, 87703-000, Paranavaí, Paraná, Brazil
| | - Wesley Lima Oliveira
- Multiuser Core Laboratory of Biological Analysis and Molecular Biology (BioMol) at Universidade Tecnológica Federal Do Paraná (UTFPR), Campus Dois Vizinhos, Estrada para Boa Esperança S/n, km 04, Comunidade São Cristóvão, P.O. Box 157, 85660-000 Dois Vizinhos, Paraná, Brazil; Universidade Estadual de Campinas, Campinas, São Paulo, Brazil
| | - Sandrieli Gonçalves
- Graduate Program in Biotechnology (PPGBIOTEC), Universidade Tecnológica Federal Do Paraná (UTFPR), Campus Dois Vizinhos, Estrada para Boa Esperança S/n, km 04, Comunidade São Cristóvão, P.O. Box 157, 85660-000, Dois Vizinhos, Paraná, Brazil; Multiuser Core Laboratory of Biological Analysis and Molecular Biology (BioMol) at Universidade Tecnológica Federal Do Paraná (UTFPR), Campus Dois Vizinhos, Estrada para Boa Esperança S/n, km 04, Comunidade São Cristóvão, P.O. Box 157, 85660-000 Dois Vizinhos, Paraná, Brazil
| | - Marina Wust Vasconcelos
- Graduate Program in Biotechnology (PPGBIOTEC), Universidade Tecnológica Federal Do Paraná (UTFPR), Campus Dois Vizinhos, Estrada para Boa Esperança S/n, km 04, Comunidade São Cristóvão, P.O. Box 157, 85660-000, Dois Vizinhos, Paraná, Brazil; Multiuser Core Laboratory of Biological Analysis and Molecular Biology (BioMol) at Universidade Tecnológica Federal Do Paraná (UTFPR), Campus Dois Vizinhos, Estrada para Boa Esperança S/n, km 04, Comunidade São Cristóvão, P.O. Box 157, 85660-000 Dois Vizinhos, Paraná, Brazil
| | - Karina Silvia Beatriz Miglioranza
- Laboratorio de Ecotoxicología y Contaminación Ambiental. Instituto de Investigaciones Marinas y Costeras (IIMyC), FCEyN, UNMDP-CONICET. Funes 3350, 7600, Mar Del Plata, Argentina
| | - Nédia Castilhos Ghisi
- Graduate Program in Biotechnology (PPGBIOTEC), Universidade Tecnológica Federal Do Paraná (UTFPR), Campus Dois Vizinhos, Estrada para Boa Esperança S/n, km 04, Comunidade São Cristóvão, P.O. Box 157, 85660-000, Dois Vizinhos, Paraná, Brazil; Multiuser Core Laboratory of Biological Analysis and Molecular Biology (BioMol) at Universidade Tecnológica Federal Do Paraná (UTFPR), Campus Dois Vizinhos, Estrada para Boa Esperança S/n, km 04, Comunidade São Cristóvão, P.O. Box 157, 85660-000 Dois Vizinhos, Paraná, Brazil.
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Wang Z, Luo F, Guo M, Yu J, Zhou L, Zhang X, Sun H, Yang M, Lou Z, Chen Z, Wang X. The metabolism and dissipation behavior of tolfenpyrad in tea: A comprehensive risk assessment from field to cup. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 877:162876. [PMID: 36933718 DOI: 10.1016/j.scitotenv.2023.162876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 03/09/2023] [Accepted: 03/11/2023] [Indexed: 05/06/2023]
Abstract
The metabolites of pesticides usually require rational risk assessment. In the present study, the metabolites of tolfenpyrad (TFP) in tea plants were identified using UPLC-QToF/MS analysis, and the transfer of TFP and its metabolites from tea bushes to consumption was studied for a comprehensive risk assessment. Four metabolites, PT-CA, PT-OH, OH-T-CA, and CA-T-CA, were identified, and PT-CA and PT-OH were detected along with dissipation of the parent TFP under field conditions. During processing, 3.11-50.00 % of TFP was further eliminated. Both PT-CA and PT-OH presented a downward trend (7.97-57.89 %) during green tea processing but an upward trend (34.48-124.17 %) during black tea manufacturing. The leaching rate (LR) of PT-CA (63.04-101.03 %) from dry tea to infusion was much higher than that of TFP (3.06-6.14 %). As PT-OH was no longer detected in tea infusions after 1 d of TFP application, TFP and PT-CA were taken into account in the comprehensive risk assessment. The risk quotient (RQ) assessment indicated a negligible health risk, but PT-CA posed a greater potential risk than TFP to tea consumers. Therefore, this study provides guidance for rational TFP application and suggests the sum of TFP and PT-CA residues as the maximum residual limit (MRL) in tea.
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Affiliation(s)
- Zihan Wang
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China
| | - Fengjian Luo
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China; Key Laboratory of Biology, Genetics and Breeding of Special Economic Animals and Plants, Ministry of Agriculture and Rural Affairs, Hangzhou 310008, China
| | - Mingming Guo
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China
| | - Jiawei Yu
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China
| | - Li Zhou
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China; Key Laboratory of Biology, Genetics and Breeding of Special Economic Animals and Plants, Ministry of Agriculture and Rural Affairs, Hangzhou 310008, China
| | - Xinzhong Zhang
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China; Key Laboratory of Biology, Genetics and Breeding of Special Economic Animals and Plants, Ministry of Agriculture and Rural Affairs, Hangzhou 310008, China
| | - Hezhi Sun
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China; Key Laboratory of Biology, Genetics and Breeding of Special Economic Animals and Plants, Ministry of Agriculture and Rural Affairs, Hangzhou 310008, China
| | - Mei Yang
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China; Key Laboratory of Biology, Genetics and Breeding of Special Economic Animals and Plants, Ministry of Agriculture and Rural Affairs, Hangzhou 310008, China
| | - Zhengyun Lou
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China; Key Laboratory of Biology, Genetics and Breeding of Special Economic Animals and Plants, Ministry of Agriculture and Rural Affairs, Hangzhou 310008, China
| | - Zongmao Chen
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China; Key Laboratory of Biology, Genetics and Breeding of Special Economic Animals and Plants, Ministry of Agriculture and Rural Affairs, Hangzhou 310008, China
| | - Xinru Wang
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China; Key Laboratory of Biology, Genetics and Breeding of Special Economic Animals and Plants, Ministry of Agriculture and Rural Affairs, Hangzhou 310008, China.
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Han H, Jiang C, Wang C, Lu Y, Wang Z, Chai Y, Zhang X, Liu X, Lu C, Chen H. Dissipation pattern and conversion of pyrrolizidine alkaloids (PAs) and pyrrolizidine alkaloid N-oxides (PANOs) during tea manufacturing and brewing. Food Chem 2022; 390:133183. [PMID: 35597088 DOI: 10.1016/j.foodchem.2022.133183] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 04/28/2022] [Accepted: 05/06/2022] [Indexed: 01/23/2023]
Abstract
Pyrrolizidine alkaloids (PAs) and pyrrolizidine alkaloid N-oxides (PANOs) are toxic secondary metabolites in plants, and one kind of main exogenous pollutants of tea. Herein, the dissipation pattern and conversion behavior of PAs/PANOs were investigated during tea manufacturing and brewing using ultra high-performance liquid chromatography tandem mass spectrometry. Compared with PAs (processing factor (PF) = 0.73-1.15), PANOs had higher degradation rates (PF = 0.21-0.56) during tea manufacturing, and drying played the most important role in PANOs degradation. Moreover, PANOs were firstly discovered to be converted to corresponding PAs especially in the time-consuming (spreading of green tea manufacturing and withering of black tea manufacturing) and high-temperature tea processing (drying). Moreover, higher transfer rates of PANOs (≥75.84%) than that of PAs (≤56.53%) were observed during tea brewing. Due to higher toxicity of PAs than PANOs, these results are conducive to risk assessment and pollution control of PAs/PANOs in tea.
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Affiliation(s)
- Haolei Han
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China; Graduate School of Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Changling Jiang
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China; Graduate School of Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Chen Wang
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China; Key Laboratory of Tea Quality and Safety & Risk Assessment, Ministry of Agriculture, Hangzhou 310008, China
| | - Yuting Lu
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China; Graduate School of Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Ziqi Wang
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China; Key Laboratory of Tea Biochemistry and Biotechnology, Ministry of Agriculture and Ministry of Education, Anhui Agricultural University, Hefei 230036, China
| | - Yunfeng Chai
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China; Key Laboratory of Tea Quality and Safety & Risk Assessment, Ministry of Agriculture, Hangzhou 310008, China
| | - Xiangchun Zhang
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China; Key Laboratory of Tea Quality and Safety & Risk Assessment, Ministry of Agriculture, Hangzhou 310008, China
| | - Xin Liu
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China; Key Laboratory of Tea Quality and Safety & Risk Assessment, Ministry of Agriculture, Hangzhou 310008, China
| | - Chengyin Lu
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China; Key Laboratory of Tea Quality and Safety & Risk Assessment, Ministry of Agriculture, Hangzhou 310008, China.
| | - Hongping Chen
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China; Key Laboratory of Tea Quality and Safety & Risk Assessment, Ministry of Agriculture, Hangzhou 310008, China.
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Wu Y, An Q, Hao X, Li D, Zhou C, Zhang J, Wei X, Pan C. Dissipative behavior, residual pattern, and risk assessment of four pesticides and their metabolites during tea cultivation, processing and infusion. PEST MANAGEMENT SCIENCE 2022; 78:3019-3029. [PMID: 35426231 DOI: 10.1002/ps.6927] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 03/04/2022] [Accepted: 04/14/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND In recent years, metabolic products of pesticides have gained much attention due to their substantial characteristics as organic pollutants. So far, the behavior and metabolite levels of pesticide metabolites in crops have not been characterized well. In the present study, four registered pesticides (imidacloprid, diafenthiuron, malathion and chlorothalonil) were applied on tea plants in Fujian and Sichuan to characterize their metabolites residue pattern and dietary risk. RESULTS Four pesticides dissipated first-order kinetics in the fresh tea leaves with the half-lives of 1.4-3.8 days. Nine metabolites were detected in the fresh tea leaves and green tea after processing. The metabolites residues showed an increasing trend first and then declined after treatment, and reached the maximum near the half-lives of pesticide. Compared with the parent pesticide, the total residue and acute risk (included the metabolites) increased by 1.7-105.2 times. Some metabolites, especially those whose parent pesticides have high water solubility and low Log Kow, will be more easily transferred to tea infusion. CONCLUSION Pesticides were metabolized rapidly on tea plants after application, but the production of metabolites increased the health risk of tea consumption. These results could provide insights to use the pesticides in tea gardens and risk monitoring after application. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Yangliu Wu
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing, China
| | - Quanshun An
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing, China
| | - Xianghong Hao
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing, China
| | - Dong Li
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing, China
| | - Chunran Zhou
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing, China
| | - Jingbang Zhang
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing, China
| | - Xinlin Wei
- Department of Food Science & Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Canping Pan
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing, China
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Jiang L, Geng Y, Wang L, Peng Y, Jing W, Xu Y, Liu X. Enantioseparation and dissipation of acephate and its highly toxic metabolite methamidophos in pakchoi by supercritical fluid chromatography tandem mass spectrometry. J Sep Sci 2022; 45:1806-1817. [PMID: 35261148 DOI: 10.1002/jssc.202200006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 02/17/2022] [Accepted: 03/03/2022] [Indexed: 11/06/2022]
Abstract
Acephate is widely used in crops as racemate. However, the enantioselective dissipation of acephate enantiomers has not been investigated in pakchoi. A sensitive and effective approach was established for determining residues of acephate and its highly toxic metabolite methamidophos enantiomers by supercritical fluid chromatography tandem mass spectrometry. Baseline separations for their enantiomers were achieved by using a Chiralcel OD-H column. The optimal chromatographic conditions were obtained as follows: CO2 /ethanol (95/5) as mobile phase; flow rate, 3.0 mL/min; column temperature, 40°C. The mean recoveries (RSDs) of analytes were in the range of 77%-83.1% (6.1%-9.9%), 75.4%-87.5% (9.3%-13.2%), and 81.5%-84.2% (7.1%-13.4%) at three fortification levels (0.005, 0.05, and 0.5 mg/kg for each enantiomer) for interday assay (n = 18). The method was used to evaluate the enantioselective dissipation of acephate and methamidophos in pakchoi. S-acephate dissipated faster than R-acephate, while the concentration of R-methamidophos was higher than that of S-methamidophos during the entire study period. The results indicated that the R-enantiomer of acephate and methamidophos was preferentially enriched in pakchoi. The established analysis approach and the study data provided useful information for the rational use of acephate in agriculture. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Linjie Jiang
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, China.,Key Laboratory for Environmental Factors Control of Agro-product Quality Safety, Ministry of Agriculture and Rural Affairs, China.,National Reference Laboratory for Agricultural Testing, China
| | - Yue Geng
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, China.,Key Laboratory for Environmental Factors Control of Agro-product Quality Safety, Ministry of Agriculture and Rural Affairs, China.,National Reference Laboratory for Agricultural Testing, China
| | - Lu Wang
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, China.,Key Laboratory for Environmental Factors Control of Agro-product Quality Safety, Ministry of Agriculture and Rural Affairs, China.,National Reference Laboratory for Agricultural Testing, China
| | - Yi Peng
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, China.,Key Laboratory for Environmental Factors Control of Agro-product Quality Safety, Ministry of Agriculture and Rural Affairs, China.,National Reference Laboratory for Agricultural Testing, China
| | - Wei Jing
- Shimadzu (China) Co., LTD. Beijing Branch, China
| | - Yaping Xu
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, China.,Key Laboratory for Environmental Factors Control of Agro-product Quality Safety, Ministry of Agriculture and Rural Affairs, China.,National Reference Laboratory for Agricultural Testing, China
| | - Xiaowei Liu
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, China.,Key Laboratory for Environmental Factors Control of Agro-product Quality Safety, Ministry of Agriculture and Rural Affairs, China.,National Reference Laboratory for Agricultural Testing, China
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Jiao W, Hou R, Li J, Ge G, Lv P, Ling T, Shi T, Zhang Z, Li QX, Hua R. Enantiomer metabolism of acephate and its metabolite methamidophos in in vitro tea (Camellia sinensis L.) systems: Comparison between cell suspensions and excised tissues. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 806:150863. [PMID: 34626633 DOI: 10.1016/j.scitotenv.2021.150863] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2021] [Revised: 09/28/2021] [Accepted: 10/03/2021] [Indexed: 06/13/2023]
Abstract
Enantioselective metabolism of chiral pesticide in plants is very important. In vitro system has become an effective means to study the metabolism of pesticides in plants, but the study on the metabolism of chiral pesticides has not been reported. This work compared the enantiomer metabolic behavior of acephate and its metabolite methamidophos between tea cell suspensions and excised tea stem with leaves. (±)-Acephate could be absorbed and transferred well to top leaves by the cut end of excised stem after 24 h. (±)-Methamidophos was derived from the metabolism of (±)-acephate in tea plants at 3-5% in leaves and 2-3% in stems at 216 h. The content of (+)-methamidophos was 1.5 times higher than that of (-)-methamidophos in excised leaves. Though both (±)-acephate and (±)-methamidophos could be metabolized well by cell suspension, (±)-acephate and (±)-methamidophos was non-enantioselectively metabolized in cell suspension. It was shown that using the excised tea stem with leaves for chiral pesticide metabolism studies was much closer to intact plant than cell suspensions. This result also established an effective and easily available in vitro metabolic model for the study of enantioselective metabolism of chiral contaminants from environment.
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Affiliation(s)
- Weiting Jiao
- School of Resource & Environment, Anhui Agricultural University, Key Laboratory of Agri-food Safety of Anhui Province, Hefei 230036, PR China; State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science & Technology, Anhui Agricultural University, Hefei 230022, China
| | - Ruyan Hou
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science & Technology, Anhui Agricultural University, Hefei 230022, China.
| | - Jianchao Li
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science & Technology, Anhui Agricultural University, Hefei 230022, China.
| | - Guoqin Ge
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science & Technology, Anhui Agricultural University, Hefei 230022, China
| | - Pei Lv
- School of Resource & Environment, Anhui Agricultural University, Key Laboratory of Agri-food Safety of Anhui Province, Hefei 230036, PR China.
| | - Tiejun Ling
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science & Technology, Anhui Agricultural University, Hefei 230022, China.
| | - Taozhong Shi
- School of Resource & Environment, Anhui Agricultural University, Key Laboratory of Agri-food Safety of Anhui Province, Hefei 230036, PR China
| | - Zhaoxian Zhang
- School of Resource & Environment, Anhui Agricultural University, Key Laboratory of Agri-food Safety of Anhui Province, Hefei 230036, PR China.
| | - Qing X Li
- Department of Molecular Biosciences and Bioengineering, University of Hawaii at Manoa, 1955 East-West Road, Honolulu, HI 96822, United States.
| | - Rimao Hua
- School of Resource & Environment, Anhui Agricultural University, Key Laboratory of Agri-food Safety of Anhui Province, Hefei 230036, PR China.
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Wu Y, An Q, Li D, Kang L, Zhou C, Zhang J, Pan C. Multi-residue analytical method development and risk assessment of 56 pesticides and their metabolites in tea by chromatography tandem mass spectroscopy. Food Chem 2021; 375:131819. [PMID: 34920310 DOI: 10.1016/j.foodchem.2021.131819] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 11/15/2021] [Accepted: 12/05/2021] [Indexed: 11/04/2022]
Abstract
A modified QuEChERS method coupled to chromatography tandem mass spectroscopy was established and used to identify 56 pesticides and 21 metabolites residues in tea samples. The average recoveries for the target compounds ranged from 71% to 109% with RSDs of 1-17%. Pesticides and metabolites residues in 248 tea samples from China were investigated by the developed method, and the dietary intake risk for consumers was estimated. The results showed that 36 pesticides and 14 metabolites were detected with concentrations of 0.0050-7.7 mg/kg. There are unlikely to present a public health concern for Chinese consumers. The acute risk of pesticides would be exaggerated when calculated by the residue level in tea instead of tea infusion. The unauthorized and banned pesticide contributed to the chronic and acute hazard index by 68% and 36%, respectively. The cumulative risk of residual pesticides and their metabolites on human health deserve further attention.
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Affiliation(s)
- Yangliu Wu
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Quanshun An
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Dong Li
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Lu Kang
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China; Institute of Agricultural Quality Standards and Testing Technology, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China
| | - Chunran Zhou
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Jingbang Zhang
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Canping Pan
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China.
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Goswami J, Banjare MK, Banjare RK, Rai JK, Rai MK. Extraction of acephate pesticide in environmental and agricultural samples by spectrophotometric method. J INDIAN CHEM SOC 2021. [DOI: 10.1016/j.jics.2021.100138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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9
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Goswami J, Banjare MK, Banjare RK, Rai JK, Rai MK. Extraction of acephate pesticide in environmental and agricultural samples by spectrophotometric method. J INDIAN CHEM SOC 2021; 98:100138. [DOI: https:/doi.org/10.1016/j.jics.2021.100138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2023]
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10
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Dai J, Jiang C, Chai Y, Wang C, Chen H, Liu X. Photolysis kinetics of cartap and nereistoxin in water and tea beverages under irradiation of simulated sunlight and ultraviolet under laboratory conditions. Food Chem 2021; 355:129595. [PMID: 33774224 DOI: 10.1016/j.foodchem.2021.129595] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 03/07/2021] [Accepted: 03/08/2021] [Indexed: 01/27/2023]
Abstract
Cartap applied widely in agricultural crops and tea plants is readily degraded into nereistoxin, resulting in a longer residual period and higher exposure risk to humans. The photolysis kinetics of cartap and nereistoxin in water and tea beverages was firstly investigated to explore the effect and mechanism of pesticide residue removal. Cartap and nereistoxin could be effectively photolyzed by ultraviolet and their photolysis rate increased with light intensity increasing. The photolysis percentage of cartap and nereistoxin in different solutions under ultraviolet irradiation of 200 W mercury lamp reached 81.8%-100.0% within 6 h. Relative to water solution, the water-soluble components in tea had an inhibition effect on the photodegradation of cartap and nereistoxin. This research provided a reference for the development of effective methods for the removal of cartap and its metabolite in water and tea beverages.
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Affiliation(s)
- Jinxia Dai
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China; Graduate School of Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Changling Jiang
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China; Graduate School of Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Yunfeng Chai
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China; Key Laboratory of Tea Quality and Safety & Risk Assessment, Ministry of Agriculture, Hangzhou 310008, China
| | - Chen Wang
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China; Key Laboratory of Tea Quality and Safety & Risk Assessment, Ministry of Agriculture, Hangzhou 310008, China
| | - Hongping Chen
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China; Key Laboratory of Tea Quality and Safety & Risk Assessment, Ministry of Agriculture, Hangzhou 310008, China.
| | - Xin Liu
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China; Key Laboratory of Tea Quality and Safety & Risk Assessment, Ministry of Agriculture, Hangzhou 310008, China.
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11
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Jiang C, Han H, Dai J, Wang Z, Chai Y, Lu C, Chen H. A Dissipation Pattern of Gibberellic Acid and Its Metabolite, Isogibberellic Acid, during Tea Planting, Manufacturing, and Brewing. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:14417-14425. [PMID: 33191742 DOI: 10.1021/acs.jafc.0c06025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
As a widely used plant growth regulator, the gibberellic acid (GA3) residue in tea has potential risk for human health. Herein, the degradation of GA3 and its conversion into main metabolites were investigated during tea planting, manufacturing, and brewing using ultrahigh-performance liquid chromatography tandem mass spectrometry. The metabolite iso-GA3 was first discovered during the tea production chain and identified using Q-Exactive Orbitrap mass spectrometry. GA3 dissipated following first-order kinetics in tea shoots with half-lives ranging from 2.46 to 2.74 days. It was degraded into iso-GA3 in tea shoots, which had a longer residual period than GA3. Meanwhile, external application of GA3 could increase the proportion of growth-promoting endogenous phytohormones and lead to rapid growth of tea plants. During tea manufacturing, iso-GA3 was quickly and massively converted from GA3. Fixing (heat at 220-230 °C) played an important role in the dissipation of GA3 and iso-GA3 during green tea manufacturing, but there were high residues of iso-GA3 in black tea. High transfer rates (77.3 to 94.5%) of GA3 and iso-GA3 were observed during tea brewing. These results could provide a practical reference for food safety in tea and other agricultural products and the guidance for scientific application of GA3 in tea planting.
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Affiliation(s)
- Changling Jiang
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China
- Graduate School of Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Haolei Han
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China
- Graduate School of Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Jinxia Dai
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China
- Graduate School of Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Ziqi Wang
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China
- State Key Laboratory of Tea Plant Biology and Utilization, Key laboratory of Food Nutrition and Safety, School of Tea and Food Science & Technology, Anhui Agricultural University, Hefei 230036, China
| | - Yunfeng Chai
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China
- Key Laboratory of Tea Quality and Safety & Risk Assessment, Ministry of Agriculture, Hangzhou 310008, China
| | - Chengyin Lu
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China
- Key Laboratory of Tea Quality and Safety & Risk Assessment, Ministry of Agriculture, Hangzhou 310008, China
| | - Hongping Chen
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China
- Key Laboratory of Tea Quality and Safety & Risk Assessment, Ministry of Agriculture, Hangzhou 310008, China
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12
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Biodegradation of acephate by Bacillus paramycoides NDZ and its degradation pathway. World J Microbiol Biotechnol 2020; 36:155. [PMID: 32951077 DOI: 10.1007/s11274-020-02931-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2019] [Accepted: 09/14/2020] [Indexed: 10/23/2022]
Abstract
Acephate is widely used in agriculture, but its poisonous metabolites and poor sorption characteristics make it a serious environmental pollutant and toxicant to human health. To screen novel bacteria for biodegradation of acephate and uncover its degradation pathway, a strain called NDZ that is capable of utilizing acephate as a sole carbon and energy source was isolated from severely contaminated cultivated land. The bacterium was identified as Bacillus paramycoides based on 16S rDNA sequence analyses. The growth and degradation capacities of B. paramycoides NDZ under different conditions were studied using optical density at 600 nm (OD600) and high-performance liquid chromatography (HPLC). The results showed that B. paramycoides NDZ can grow well with acephate as its sole carbon source (OD600 = 0.76), and degraded about 76% of acephate in mineral salt medium with an initial concentration of 500 mg/L within 48 h. The results of response surface methodology revealed the optimal conditions for degradation was 36 ℃ and pH 6.85 with 526 mg/L acephate. Gas chromatography-mass spectrometry showed that methamidophos was the main metabolite of B. paramycoides NDZ, different from the degradation products of high-temperature steam (121 °C, 103 kPa). Based on the detection of this intermediate, we inferred that acephate was degraded to methamidophos through hydrolysis of the amide linkage, after which methamidophos was degraded to some small molecules, which can be metabolized easily by the bacterium. In summary, B. paramycoides NDZ is a potentially useful bacterium for acephate degradation and remediation of contaminated soils.
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Lin Z, Pang S, Zhang W, Mishra S, Bhatt P, Chen S. Degradation of Acephate and Its Intermediate Methamidophos: Mechanisms and Biochemical Pathways. Front Microbiol 2020; 11:2045. [PMID: 33013750 PMCID: PMC7461891 DOI: 10.3389/fmicb.2020.02045] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Accepted: 08/03/2020] [Indexed: 11/28/2022] Open
Abstract
Acephate is an organophosphate pesticide that has been widely used to control insect pests in agricultural fields for decades. However, its use has been partially restricted in many countries due to its toxic intermediate product methamidophos. Long term exposure to acephate and methamidophos in non-target organisms results in severe poisonous effects, which has raised public concern and demand for the removal of these pollutants from the environment. In this paper, the toxicological effects of acephate and/or methamidophos on aquatic and land animals, including humans are reviewed, as these effects promote the necessity of removing acephate from the environment. Physicochemical degradation mechanisms of acephate and/or methamidophos are explored and explained, such as photo-Fenton, ultraviolet/titanium dioxide (UV/TiO2) photocatalysis, and ultrasonic ozonation. Compared with physicochemical methods, the microbial degradation of acephate and methamidophos is emerging as an eco-friendly method that can be used for large-scale treatment. In recent years, microorganisms capable of degrading methamidophos or acephate have been isolated, including Hyphomicrobium sp., Penicillium oxalicum, Luteibacter jiangsuensis, Pseudomonas aeruginosa, and Bacillus subtilis. Enzymes related to acephate and/or methamidophos biodegradation include phosphotriesterase, paraoxonase 1, and carboxylesterase. Furthermore, several genes encoding organophosphorus degrading enzymes have been identified, such as opd, mpd, and ophc2. However, few reviews have focused on the biochemical pathways and molecular mechanisms of acephate and methamidophos. In this review, the mechanisms and degradation pathways of acephate and methamidophos are summarized in order to provide a new way of thinking for the study of the degradation of acephate and methamidophos.
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Affiliation(s)
- Ziqiu Lin
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou, China.,Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
| | - Shimei Pang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou, China.,Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
| | - Wenping Zhang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou, China.,Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
| | - Sandhya Mishra
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou, China.,Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
| | - Pankaj Bhatt
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou, China.,Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
| | - Shaohua Chen
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou, China.,Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
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Dai J, Jiang C, Gao G, Zhu L, Chai Y, Chen H, Liu X. Dissipation pattern and safety evaluation of cartap and its metabolites during tea planting, tea manufacturing and brewing. Food Chem 2020; 314:126165. [DOI: 10.1016/j.foodchem.2020.126165] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 12/12/2019] [Accepted: 01/05/2020] [Indexed: 10/25/2022]
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15
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Jiménez-Jiménez S, Casado N, García MÁ, Marina ML. Enantiomeric analysis of pyrethroids and organophosphorus insecticides. J Chromatogr A 2019; 1605:360345. [DOI: 10.1016/j.chroma.2019.06.066] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 06/27/2019] [Accepted: 06/30/2019] [Indexed: 12/30/2022]
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16
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Bo Y, Feng J, Xu J, Huang Y, Cai H, Cui X, Dong J, Ding S, Chen Z. High-resolution pure shift NMR spectroscopy offers better metabolite discrimination in food quality analysis. Food Res Int 2019; 125:108574. [PMID: 31554106 DOI: 10.1016/j.foodres.2019.108574] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 07/16/2019] [Accepted: 07/21/2019] [Indexed: 01/04/2023]
Abstract
PSYCHE homonuclear decoupling, a prominent pure shift NMR method, is successfully applied to adulteration discrimination of honey and geographical originality identification of tea. Effects of homonuclear couplings are efficiently suppressed, producing resolution-enhanced spectra. The pair wise honey and tea samples are well separated in OPLS-DA models with high predictability. Due to the well-resolved and accurate assignment of singlet resonances after decoupling, PSYCHE is advantageous in the identification of differential components and accurate quantification of compound concentrations presented by enhanced volcano and Beeswarm plots of honey samples, while the analysis of NOESY is easily interfered by overlapped resonances, which is further proved by the STOCSY analysis, displaying the spectral stability and reproducibility. Experimental results show that PSYCHE can improve the spectral resolution of natural complex products such as honey and tea and be combined with multivariate statistical analysis and serve as a supplementary technique to the standard methods, especially for samples systems composed by a few high-content compounds.
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Affiliation(s)
- Yu Bo
- Department of Electronic Science, Xiamen University, Xiamen, China
| | - Jianghua Feng
- Department of Electronic Science, Xiamen University, Xiamen, China
| | - JingJing Xu
- Department of Electronic Science, Xiamen University, Xiamen, China
| | - Yuqing Huang
- Department of Electronic Science, Xiamen University, Xiamen, China
| | - Honghao Cai
- School of Science, Jimei University, Xiamen, China
| | - Xiaohong Cui
- Department of Electronic Science, Xiamen University, Xiamen, China.
| | - Jiyang Dong
- Department of Electronic Science, Xiamen University, Xiamen, China.
| | - Shangwu Ding
- Natl Sun Yat Sen Univ, Dept Chem, Taiwan; Natl Sun Yat Sen Univ, Ctr Nanosci & Nanotechnol, Kaohsiung 80424, Taiwan
| | - Zhong Chen
- Department of Electronic Science, Xiamen University, Xiamen, China
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17
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Zhang X, Zhao Y, Cui X, Wang X, Shen H, Chen Z, Huang C, Meruva N, Zhou L, Wang F, Wu L, Luo F. Application and enantiomeric residue determination of diniconazole in tea and grape and apple by supercritical fluid chromatography coupled with quadrupole-time-of-flight mass spectrometry. J Chromatogr A 2018; 1581-1582:144-155. [DOI: 10.1016/j.chroma.2018.10.051] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2018] [Accepted: 10/29/2018] [Indexed: 01/30/2023]
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18
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Chen H, Gao G, Yin P, Dai J, Chai Y, Liu X, Lu C. Enantioselectivity and residue analysis of fipronil in tea (Camellia sinensis) by ultra-performance liquid chromatography Orbitrap mass spectrometry. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2018; 35:2000-2010. [DOI: 10.1080/19440049.2018.1497306] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Hongping Chen
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
- Key Laboratory of Tea Quality and Safety, Ministry of Agriculture, Hangzhou, China
| | - Guanwei Gao
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
- Key Laboratory of Tea Quality and Safety, Ministry of Agriculture, Hangzhou, China
| | - Peng Yin
- Department of Tea Science, Xinyang Agriculture and Forestry University, Xinyang, China
| | - Jinxia Dai
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
- Key Laboratory of Tea Quality and Safety, Ministry of Agriculture, Hangzhou, China
| | - Yunfeng Chai
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
- Key Laboratory of Tea Quality and Safety, Ministry of Agriculture, Hangzhou, China
| | - Xin Liu
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
- Key Laboratory of Tea Quality and Safety, Ministry of Agriculture, Hangzhou, China
| | - Chengyin Lu
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
- Key Laboratory of Tea Quality and Safety, Ministry of Agriculture, Hangzhou, China
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19
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Metabolism studies of chiral pesticides: A critical review. J Pharm Biomed Anal 2018; 147:89-109. [DOI: 10.1016/j.jpba.2017.08.011] [Citation(s) in RCA: 114] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Revised: 08/04/2017] [Accepted: 08/06/2017] [Indexed: 01/24/2023]
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20
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Evaluation of transfer rates of multiple pesticides from green tea into infusion using water as pressurized liquid extraction solvent and ultra-performance liquid chromatography tandem mass spectrometry. Food Chem 2017; 216:1-9. [DOI: 10.1016/j.foodchem.2016.07.175] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2016] [Revised: 07/22/2016] [Accepted: 07/28/2016] [Indexed: 01/20/2023]
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21
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Sun D, Pang J, Fang Q, Zhou Z, Jiao B. Stereoselective toxicity of etoxazole to MCF-7 cells and its dissipation behavior in citrus and soil. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:24731-24738. [PMID: 27658398 DOI: 10.1007/s11356-016-7393-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Accepted: 08/04/2016] [Indexed: 06/06/2023]
Abstract
The stereoselective cytotoxicity of new chiral acaricide etoxazole and its dissipation in citrus and soil were investigated for the first time. Enantioselective toxicity and oxidative stress of etoxazole toward MCF-7 cells was conducted. The phenomenon of dose- and form-dependent cytotoxicity was demonstrated by MTT and LDH assays, ROS generation, and SOD and CAT activity alternation. Cytotoxicity ranks were found to be consistent with oxidative damage as (R)- > Rac- > (S)-etoxazole. Moreover, the results of enantioselective degradation showed that (S)-etoxazole degraded faster than its antipode (R)-etoxazole. The gradual raise of EF values indicated the achievement of enantioselective degradation in citrus and soil, leaving the enrichment of (R)-etoxazole isomer. Significant differences of environmental behavior and cytotoxicity of etoxazole enantiomers were found in this study which provided valuable insight into the mechanism of potential toxicity and warranted more careful assessment of this pesticide before its agricultural application.
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Affiliation(s)
- Dali Sun
- Citrus Research Institute, Southwest University, Chongqing, 400712, China
- College of Horticulture and Landscape Architecture, Southwest University, Chongqing, 400716, China
| | - Junxiao Pang
- Citrus Research Institute, Southwest University, Chongqing, 400712, China
| | - Qi Fang
- Citrus Research Institute, Southwest University, Chongqing, 400712, China
| | - Zhiqin Zhou
- College of Horticulture and Landscape Architecture, Southwest University, Chongqing, 400716, China.
| | - Bining Jiao
- Citrus Research Institute, Southwest University, Chongqing, 400712, China.
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22
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Mechanism and kinetic properties of OH-initiated atmospheric oxidation degradation of methamidophos in the presence of O2/NO. Chem Phys Lett 2016. [DOI: 10.1016/j.cplett.2016.03.036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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23
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Pan R, Chen HP, Zhang ML, Wang QH, Jiang Y, Liu X. Dissipation Pattern, Processing Factors, and Safety Evaluation for Dimethoate and Its Metabolite (Omethoate) in Tea (Camellia Sinensis). PLoS One 2015; 10:e0138309. [PMID: 26406463 PMCID: PMC4583447 DOI: 10.1371/journal.pone.0138309] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2015] [Accepted: 08/28/2015] [Indexed: 11/18/2022] Open
Abstract
Residue levels of dimethoate and its oxon metabolite (omethoate) during tea planting, manufacturing, and brewing were investigated using a modified QuEChERS sample preparation and gas chromatography. Dissipation of dimethoate and its metabolite in tea plantation followed the first-order kinetic with a half-life of 1.08-1.27 d. Tea manufacturing has positive effects on dimethoate dissipation. Processing factors of dimethoate are in the range of 2.11-2.41 and 1.41-1.70 during green tea and black tea manufacturing, respectively. Omethoate underwent generation as well as dissipation during tea manufacturing. Sum of dimethoate and omethoate led to a large portion of 80.5-84.9% transferring into tea infusion. Results of safety evaluation indicated that omethoate could bring higher human health risk than dimethoate due to its higher hazard quotient by drinking tea. These results would provide information for the establishment of maximum residue limit and instruction for the application of dimethoate formulation on tea crop.
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Affiliation(s)
- Rong Pan
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
- Graduate School of Chinese Academy of Agricultural Sciences, Beijing, China
| | - Hong-Ping Chen
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
- Key Laboratory of Tea Quality and safety & Risk Assessment, Ministry of Agriculture, Hangzhou, China
- * E-mail: (XL); (HC)
| | - Ming-Lu Zhang
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
- Graduate School of Chinese Academy of Agricultural Sciences, Beijing, China
| | - Qing-Hua Wang
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
- Key Laboratory of Tea Quality and safety & Risk Assessment, Ministry of Agriculture, Hangzhou, China
| | - Ying Jiang
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
- Key Laboratory of Tea Quality and safety & Risk Assessment, Ministry of Agriculture, Hangzhou, China
| | - Xin Liu
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
- Key Laboratory of Tea Quality and safety & Risk Assessment, Ministry of Agriculture, Hangzhou, China
- * E-mail: (XL); (HC)
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