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Gao J, Zhang T, Fang Y, Zhao Y, Yang M, Zhao L, Li Y, Huang J, Zhu G, Guo Y. On-site rapid detection of multiple pesticide residues in tea leaves by lateral flow immunoassay. J Pharm Anal 2024; 14:276-283. [PMID: 38464789 PMCID: PMC10921326 DOI: 10.1016/j.jpha.2023.09.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 09/04/2023] [Accepted: 09/18/2023] [Indexed: 03/12/2024] Open
Abstract
The application of pesticides (mostly insecticides and fungicides) during the tea-planting process will undoubtedly increase the dietary risk associated with drinking tea. Thus, it is necessary to ascertain whether pesticide residues in tea products exceed the maximum residue limits. However, the complex matrices present in tea samples comprise a major challenge in the analytical detection of pesticide residues. In this study, nine types of lateral flow immunochromatographic strips (LFICSs) were developed to detect the pesticides of interest (fenpropathrin, chlorpyrifos, imidacloprid, thiamethoxam, acetamiprid, carbendazim, chlorothalonil, pyraclostrobin, and iprodione). To reduce the interference of tea substrates on the assay sensitivity, the pretreatment conditions for tea samples, including the extraction solvent, extraction time, and purification agent, were optimized for the simultaneous detection of these pesticides. The entire testing procedure (including pretreatment and detection) could be completed within 30 min. The detected results of authentic tea samples were confirmed by ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS), which suggest that the LFICS coupled with sample rapid pretreatment can be used for on-site rapid screening of the target pesticide in tea products prior to their market release.
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Affiliation(s)
- Junxia Gao
- Institute of Pesticide and Environmental Toxicology, Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, Hangzhou, 310058, China
| | - Tianyi Zhang
- Institute of Pesticide and Environmental Toxicology, Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, Hangzhou, 310058, China
| | - Yihua Fang
- Institute of Pesticide and Environmental Toxicology, Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, Hangzhou, 310058, China
| | - Ying Zhao
- Institute of Pesticide and Environmental Toxicology, Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, Hangzhou, 310058, China
| | - Mei Yang
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture, Hangzhou, 310008, China
| | - Li Zhao
- Shanghai Agricultural Technology Extension Service Center, Shanghai, 201103, China
| | - Ye Li
- School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou, 311200, China
| | - Jun Huang
- School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou, 311200, China
| | - Guonian Zhu
- Institute of Pesticide and Environmental Toxicology, Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, Hangzhou, 310058, China
| | - Yirong Guo
- Institute of Pesticide and Environmental Toxicology, Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, Hangzhou, 310058, China
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2
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Zhang M, Liu N, Dong F, Wang L, Xu J, Wu X, Zheng Y, Pan X. The fate of mycotoxins in oranges during storage and processing. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2023; 40:1614-1624. [PMID: 38011597 DOI: 10.1080/19440049.2023.2282555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 11/06/2023] [Indexed: 11/29/2023]
Abstract
To evaluate the safety of orange consumption induced by mycotoxins, 'Newhall' navel oranges were artificially inoculated with P. expansum and A. tenuissima, followed by an evaluation of the distribution and migration patterns of corresponding mycotoxins (patulin [PAT], tentoxin [Ten], altenuene [ALT], alternariol monomethyl ether [AME], alternariol [AOH] and tenuazonic acid [TeA]) during orange storage and processing. The concentration of mycotoxins decreased as the increase of distance from the lesion, and mycotoxins could be detected throughout the orange when the lesion extended to 8 mm in diameter. AOH and AME pose the primary source of dietary risk with high concentrations and low thresholds of toxicological concern. Orange juice and pectin processing could remove 43.4-98.7% of mycotoxins, while tangerine peelprocessing might lead to significant enrichment of mycotoxins with the processing factors (PFs) of 2.8-3.5. The findings may offer scientific insights into mitigating the dietary risk of mycotoxin exposure from oranges and their derivatives.
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Affiliation(s)
- Mengna Zhang
- State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, PR China
- Institute of Food and Nutrition Development, Ministry of Agriculture and Rural Affairs, Beijing, PR China
| | - Na Liu
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, PR China
| | - Fengshou Dong
- State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, PR China
| | - Liping Wang
- Institute of Food and Nutrition Development, Ministry of Agriculture and Rural Affairs, Beijing, PR China
| | - Jun Xu
- State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, PR China
| | - Xiaohu Wu
- State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, PR China
| | - Yongquan Zheng
- State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, PR China
| | - Xinglu Pan
- State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, PR China
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3
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Wu X, Xie Y, Tong K, Chang Q, Hu X, Fan C, Chen H. Simultaneous Screening and Quantification of 479 Pesticides in Green Tea by LC-QTOF-MS. Foods 2023; 12:4177. [PMID: 38002237 PMCID: PMC10670754 DOI: 10.3390/foods12224177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 11/17/2023] [Accepted: 11/18/2023] [Indexed: 11/26/2023] Open
Abstract
A high-throughput screening and quantification method for 479 pesticides in green tea was established based on solid-phase extraction combined with liquid chromatography coupled with quadrupole time-of-flight mass spectrometry (LC-QTOF-MS). Pesticides were extracted from samples using an optimized SPE (TPT cartridges) procedure. LC-QTOF-MS in All Ions MS/MS scan mode acquired full MS data for quantification and product ion spectra for identification. LC-QTOF-MS quantification was achieved using matrix-matched standard calibration curves to achieve the optimal method accuracy. The method performance characteristics included the linearity, overall recovery, precision, and measurement uncertainty being evaluated. The validation results exhibited a good sensitivity with the LOQs of 5-55 µg/kg, which was satisfactory for their MRLs in China or the EU. The recoveries of more than 92.7% of the 479 pesticides in green tea were 70-120% at the three spiked levels with a precision of ≤20%. Finally, this method was employed to analyze 479 pesticides in 95 tea samples from markets in China. The test results of the tea samples showed that tolfenpyrad, buprofezin, and pyridaben were found with lower concentrations. The method has effectively improved the determination efficiency of pesticide residue screening by high-resolution mass spectrometry in green tea.
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Affiliation(s)
| | | | | | | | | | | | - Hui Chen
- Chinese Academy of Inspection and Quarantine, No. 11, Ronghua South Road, Beijing 100176, China; (X.W.); (Y.X.); (K.T.); (Q.C.); (X.H.); (C.F.)
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4
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Chau SL, Zhao A, Jia W, Wang L. Simultaneous Determination of Pesticide Residues and Mycotoxins in Storage Pu-erh Tea Using Ultra-High-Performance Liquid Chromatography Coupled with Tandem Mass Spectrometry. Molecules 2023; 28:6883. [PMID: 37836726 PMCID: PMC10574668 DOI: 10.3390/molecules28196883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 09/08/2023] [Accepted: 09/15/2023] [Indexed: 10/15/2023] Open
Abstract
Mycotoxins and pesticides are the most concerning chemical contaminants that can affect the quality of Pu-erh tea during its production and storage. This study presents a method that can simultaneously determine 31 pesticide residues and six mycotoxins in Pu-erh tea within 11 min using ultra-high-performance liquid chromatography coupled with tandem mass spectrometry (UPLC-MS/MS) after QuEChERS extraction. The lower limit of quantification (LOQ) for all analytes ranged between 0.06 and 50 ppb. Recoveries for each pesticide and mycotoxin ranged between 62.0 and 130.3%, with intra- and inter-day precisions lower than 15%. Good linear relationships were obtained, with correlation coefficients of r2 > 0.991 for all analytes. The established method was applied to 31 Pu-erh tea samples, including raw and ripened Pu-erh tea with different storage times. As a result, pesticide residues were not detected in any of the collected samples, and the mycotoxins detected in the samples were well below the official maximum residue limits (MRLs). Notably, the levels of aflatoxin B1 (AFB1), aflatoxin G1 (AFG1) and aflatoxin G2 (AFG2) were lower than 1 ppb in the samples stored for more than 30 years.
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Affiliation(s)
- Siu Leung Chau
- School of Chinese Medicine, Hong Kong Baptist University, Kowloon Tong, Hong Kong, China; (S.L.C.); (W.J.)
| | - Aihua Zhao
- Shanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200023, China;
| | - Wei Jia
- School of Chinese Medicine, Hong Kong Baptist University, Kowloon Tong, Hong Kong, China; (S.L.C.); (W.J.)
| | - Lu Wang
- School of Chinese Medicine, Hong Kong Baptist University, Kowloon Tong, Hong Kong, China; (S.L.C.); (W.J.)
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5
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Li H, Luo X, Haruna SA, Zareef M, Chen Q, Ding Z, Yan Y. Au-Ag OHCs-based SERS sensor coupled with deep learning CNN algorithm to quantify thiram and pymetrozine in tea. Food Chem 2023; 428:136798. [PMID: 37423106 DOI: 10.1016/j.foodchem.2023.136798] [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: 11/17/2022] [Revised: 06/29/2023] [Accepted: 07/01/2023] [Indexed: 07/11/2023]
Abstract
Pesticide residue detection in food has become increasingly important. Herein, surface-enhanced Raman scattering (SERS) coupled with an intelligent algorithm was developed for the rapid and sensitive detection of pesticide residues in tea. By employing octahedral Cu2O templates, Au-Ag octahedral hollow cages (Au-Ag OHCs) were developed, which improved the surface plasma effect via rough edges and hollow inner structure, amplifying the Raman signals of pesticide molecules. Afterward, convolutional neural network (CNN), partial least squares (PLS), and extreme learning machine (ELM) algorithms were applied for the quantitative prediction of thiram and pymetrozine. CNN algorithms performed optimally for thiram and pymetrozine, with correlation values of 0.995 and 0.977 and detection limits (LOD) of 0.286 and 29 ppb, respectively. Accordingly, no significant difference (P greater than 0.05) was observed between the developed approach and HPLC in detecting tea samples. Hence, the proposed Au-Ag OHCs-based SERS technique could be utilized for quantifying thiram and pymetrozine in tea.
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Affiliation(s)
- Huanhuan Li
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Xiaofeng Luo
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Suleiman A Haruna
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Muhammad Zareef
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Quansheng Chen
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, PR China; College of Food and Biological Engineering, Jimei University, Xiamen 361021, PR China.
| | - Zhen Ding
- Changzhou Jintan Jiangnan Powder Co., Ltd, Changzhou 213200, PR China
| | - Yiyong Yan
- Shenzhen Bioeasy Biotechnology Co. Ltd, Shenzhen 518101, PR China; Shenzhen Senlanthy Technology Co., Ltd, Shenzhen 518107, PR China
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6
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Comparison of QuEChERS and Liquid–Liquid extraction methods for the simultaneous analysis of pesticide residues using LC-MS/MS. Food Control 2022. [DOI: 10.1016/j.foodcont.2022.109202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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7
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Roggeman M, Belova L, Fernández SF, Kim DH, Jeong Y, Poma G, Remy S, Verheyen VJ, Schoeters G, van Nuijs ALN, Covaci A. Comprehensive suspect screening for the identification of contaminants of emerging concern in urine of Flemish adolescents by liquid chromatography high-resolution mass spectrometry. ENVIRONMENTAL RESEARCH 2022; 214:114105. [PMID: 35981609 DOI: 10.1016/j.envres.2022.114105] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 08/09/2022] [Accepted: 08/10/2022] [Indexed: 06/15/2023]
Abstract
The increasing human exposure to contaminants of emerging concern (CECs) cannot be fully assessed by targeted biomonitoring methods alone as these are limited to a subset of known analytes. On the contrary, suspect screening approaches based on liquid chromatography coupled to high-resolution mass spectrometry (LC-HRMS) allow the simultaneous detection of a high number of CECs and/or their (predicted) metabolites leading to a more comprehensive assessment of possible human exposure to these compounds. Within this study, 83 urine samples of Flemish adolescents (47 males, 36 females) collected in the frame of the 4th cycle of the Flemish Environment and Health Study (FLEHS IV) were selected with the aim of including a high and a low exposure group based on the overall exposure of 45 known contaminants. Samples were analyzed using a previously developed method involving a suspect screening approach to annotate CECs and their metabolites. The applied suspect list contained a total of >12,500 CECs and their known and predicted metabolites resulting from metabolization reactions, such as hydroxylation, glucuronidation and methylation. In total, 63 compounds were annotated at a confidence level of 3 or better, with most of the detected compounds not included in current biomonitoring programs. 5 out of the 63 compounds could be assigned with confidence level 2. Five compounds could unequivocally be identified (confidence level 1) through the comparison with reference standards. Personal care products were the main detected compound class (42% of detected compounds). Additionally, a detailed literature search indicated potential toxic effects for several of the detected CECs. Lastly, in the urine samples, a significantly higher number (p < 0.05) of compounds was detected in the high exposure group as opposed to the low exposure group. This difference could only be observed between high and low exposure load samples of female participants (p < 0.01).
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Affiliation(s)
| | - Lidia Belova
- Toxicological Centre, University of Antwerp, Antwerp, Belgium
| | - Sandra F Fernández
- Foundation for the Promotion of Health and Biomedical Research in the Valencian Region, FISABIO-Public Health, Valencia, Spain
| | - Da-Hye Kim
- Toxicological Centre, University of Antwerp, Antwerp, Belgium
| | - Yunsun Jeong
- Toxicological Centre, University of Antwerp, Antwerp, Belgium
| | - Giulia Poma
- Toxicological Centre, University of Antwerp, Antwerp, Belgium
| | - Sylvie Remy
- Flemish Institute for Technological Research (VITO), Mol, Belgium
| | | | - Greet Schoeters
- Flemish Institute for Technological Research (VITO), Mol, Belgium
| | | | - Adrian Covaci
- Toxicological Centre, University of Antwerp, Antwerp, Belgium.
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Wang X, Wang H, Wu X, Lu Y. Characterization and determination of Benvitimod, an unknown risk substance in cosmetics, using nuclear magnetic resonance spectroscopy and HPLC-MS/MS. J Sep Sci 2022; 45:3652-3662. [PMID: 35822938 DOI: 10.1002/jssc.202200388] [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: 05/12/2022] [Revised: 06/27/2022] [Accepted: 07/09/2022] [Indexed: 11/06/2022]
Abstract
Ultra-high performance liquid chromatography-tandem high-resolution mass spectrometry, combined with preparative chromatography and nuclear magnetic resonance spectroscopy, a new method for identifying unknown risk substances structure in cosmetics has been established. Moreover, HPLC-MS/MS was developed for the determination of benvitimod in cosmetics. The sample was collected in Ultra-high performance liquid chromatography-tandem high-resolution mass spectrometry, the molecular formula of the unknown was obtained as C17 H18 O2 . After preparative chromatography enrichment and purification, the enriched compound was scanned by nuclear magnetic resonance spectroscopy, and the chemical structure of the unknown was confirmed as benvitimod. Subsequently, the separation was determined in multiple reaction monitoring mode. The results showed that the linearity of benvitimod was good in the range of 1∼100 μg/L with the correlation coefficient r2 >0.999; the limit of detection and quantification were 0.02 mg/kg and 0.067 mg/kg; the precision and stability were good; the average recoveries were 104.2%, 108.2% and 108.7% for low, medium and high spiked concentrations. Forty batches of cosmetics were screened, of which two batches were detected with illegal addition of benvitimod at 2.48 g/kg and 3.13 g/kg. The method effectively solved the loopholes in regulation and provided a research basis for the qualitative identification of structurally unknown compounds in cosmetics. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Xinran Wang
- National Institutes for Food and Drug Control/NMPA Key Laboratory for Researching and Evaluation of Cosmetics, Beijing, 100050, China
| | - Haiyan Wang
- National Institutes for Food and Drug Control/NMPA Key Laboratory for Researching and Evaluation of Cosmetics, Beijing, 100050, China
| | - Xianfu Wu
- National Institutes for Food and Drug Control/NMPA Key Laboratory for Researching and Evaluation of Cosmetics, Beijing, 100050, China
| | - Yong Lu
- National Institutes for Food and Drug Control/NMPA Key Laboratory for Researching and Evaluation of Cosmetics, Beijing, 100050, China
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da Silva RC, Dos Santos ID, Neu JP, Wouters RD, Fontana MEZ, Balbinot PDR, Wagner R, Pizzutti IR. Commercial yerba mate (Ilex paraguariensis) produced in South America: Determination of dithiocarbamate residues by gas chromatography-mass spectrometry. Food Chem 2022; 394:133513. [PMID: 35749875 DOI: 10.1016/j.foodchem.2022.133513] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 05/02/2022] [Accepted: 06/15/2022] [Indexed: 11/04/2022]
Abstract
This work presents an easy and quick miniaturized procedure for the analysis of dithiocarbamates fungicides (DTC), by GC-MS, in yerba mate, an important product in South America. The sample amount, the volume of extracting solvent and acid solution, and the time of hot bath shaking were minimized. A clean-up procedure based on PSA, GCB and MgSO4 was studied in order to improve analytical signal and reduce GC-MS system damage. Blank yerba mate samples were spiked with thiram at equivalent CS2 concentrations of 0.1, 0.3, 0.5 and 1 mg kg-1. The validated method at least 2 times faster than the traditional method and was according to the latest European guidelines for pesticide residue analysis. Linearity, limits of detection and quantification, matrix effects, trueness and precision were assessed. Sixty-five commercialized samples from southern Brazil and Argentina were analyzed; 14% of samples presented CS2 concentration greater than LOQ (0.1 mg kg-1).
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Affiliation(s)
- Rosselei Caiel da Silva
- Chemistry Department, Center of Research and Analysis of Residues and Contaminants (CEPARC), Federal University of Santa Maria, 97105-900 Santa Maria, RS, Brazil
| | - Ingrid Duarte Dos Santos
- Food Science and Technology Department, Federal University of Santa Maria, 97105-900 Santa Maria, RS, Brazil
| | - Júlia Paula Neu
- Chemistry Department, Center of Research and Analysis of Residues and Contaminants (CEPARC), Federal University of Santa Maria, 97105-900 Santa Maria, RS, Brazil
| | - Robson Dias Wouters
- Chemistry Department, Center of Research and Analysis of Residues and Contaminants (CEPARC), Federal University of Santa Maria, 97105-900 Santa Maria, RS, Brazil
| | - Marlos Eduardo Zorzella Fontana
- Chemistry Department, Center of Research and Analysis of Residues and Contaminants (CEPARC), Federal University of Santa Maria, 97105-900 Santa Maria, RS, Brazil
| | - Priscila Dotto Rosa Balbinot
- Chemistry Department, Center of Research and Analysis of Residues and Contaminants (CEPARC), Federal University of Santa Maria, 97105-900 Santa Maria, RS, Brazil
| | - Roger Wagner
- Food Science and Technology Department, Federal University of Santa Maria, 97105-900 Santa Maria, RS, Brazil
| | - Ionara Regina Pizzutti
- Chemistry Department, Center of Research and Analysis of Residues and Contaminants (CEPARC), Federal University of Santa Maria, 97105-900 Santa Maria, RS, Brazil.
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Recent Advances in Analytical Methods for Determination of Polyphenols in Tea: A Comprehensive Review. Foods 2022; 11:foods11101425. [PMID: 35626995 PMCID: PMC9140883 DOI: 10.3390/foods11101425] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 05/07/2022] [Accepted: 05/10/2022] [Indexed: 02/05/2023] Open
Abstract
Polyphenols, the most abundant components in tea, determine the quality and health function of tea. The analysis of polyphenols in tea is a topic of increasing interest. However, the complexity of the tea matrix, the wide variety of teas, and the difference in determination purposes puts forward higher requirements for the detection of tea polyphenols. Many efforts have been made to provide a highly sensitive and selective analytical method for the determination and characterization of tea polyphenols. In order to provide new insight for the further development of polyphenols in tea, in the present review we summarize the recent literature for the detection of tea polyphenols from the perspectives of determining total polyphenols and individual polyphenols in tea. There are a variety of methods for the analysis of total tea polyphenols, which range from the traditional titration method, to the widely used spectrophotometry based on the color reaction of Folin–Ciocalteu, and then to the current electrochemical sensor for rapid on-site detection. Additionally, the application of improved liquid chromatography (LC) and high-resolution mass spectrometry (HRMS) were emphasized for the simultaneous determination of multiple polyphenols and the identification of novel polyphenols. Finally, a brief outline of future development trends are discussed.
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Han H, Jiang C, Wang C, Wang Z, Chai Y, Zhang X, Liu X, Lu C, Chen H. Development, optimization, validation and application of ultra high performance liquid chromatography tandem mass spectrometry for the analysis of pyrrolizidine alkaloids and pyrrolizidine alkaloid N-oxides in teas and weeds. Food Control 2022. [DOI: 10.1016/j.foodcont.2021.108518] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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12
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Xu ZK, Meng JN, Lei Y, Yang XX, Yan YY, Liu HH, Lei HT, Wang TC, Shen X, Xu ZL. Highly selective monoclonal antibody-based lateral flow immunoassay for visual and sensitive determination of conazole fungicides propiconazole in vegetables. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2022; 39:92-104. [PMID: 34702140 DOI: 10.1080/19440049.2021.1976423] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Accepted: 08/22/2021] [Indexed: 10/20/2022]
Abstract
The conazole fungicide propiconazole is frequently found in vegetables although usage is not allowed. To overcome the high-cost and time-consuming labour requirements of instrumental methods, we developed a simple and visual lateral flow immunoassay for the sensitive determination of propiconazole. A hapten was carefully designed to raise a monoclonal antibody against propiconazole. Bal b/c mice were immunised with the hapten-carrier protein conjugate and a specific monoclonal antibody (mAb) was produced. Based on this mAb, a sensitive immunochromatographic strip assay (ICA) was established for rapid screening of propiconazole in vegetable samples. After optimisation of analytical parameters, the ICA strip showed a detection limit of 0.13 ng g-1 and a linear range from 0.5 to 80 ng g-1 using a strip reader. The assay also can be read by the naked eye with a visual limit of detection of 80 ng g-1. The recoveries for spiked vegetable samples by ICA ranged from 85.2% to 114.9%, with a coefficient of variation less than 11.7%. The assay time is within 45 min for a single sample including the sample pre-treatment. For spiked and blind samples, the detection capability of ICA was equivalent to liquid chromatography-mass spectrometry.
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Affiliation(s)
- Ze-Ke Xu
- Guangdong Provincial Key Laboratory of Food Quality and Safety/ Guangdong Laboratory of Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, China
| | - Jing-Nan Meng
- Guangdong Provincial Key Laboratory of Food Quality and Safety/ Guangdong Laboratory of Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, China
| | - Yi Lei
- Department of Organic Substances Analyisis, Guangdong Institute of Food Inspection, Guangzhou, China
| | - Xing-Xing Yang
- Department of Technique, Shenzhen Bioeasy Biotechnology Co., Ltd, Shenzhen, China
| | - Yi-Yong Yan
- Department of Technique, Shenzhen Bioeasy Biotechnology Co., Ltd, Shenzhen, China
| | - Hai-Hong Liu
- Department of Organic Substances Analyisis, Guangdong Institute of Food Inspection, Guangzhou, China
| | - Hong-Tao Lei
- Guangdong Provincial Key Laboratory of Food Quality and Safety/ Guangdong Laboratory of Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, China
| | - Ting-Cai Wang
- Department of Organic Substances Analyisis, Guangdong Institute of Food Inspection, Guangzhou, China
| | - Xing Shen
- Guangdong Provincial Key Laboratory of Food Quality and Safety/ Guangdong Laboratory of Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, China
| | - Zhen-Lin Xu
- Guangdong Provincial Key Laboratory of Food Quality and Safety/ Guangdong Laboratory of Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, China
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13
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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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14
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Caballero-Casero N, Castro G, Bastiaensen M, Gys C, van Larebeke N, Schoeters G, Covaci A. Identification of chemicals of emerging concern in urine of Flemish adolescents using a new suspect screening workflow for LC-QTOF-MS. CHEMOSPHERE 2021; 280:130683. [PMID: 33951581 DOI: 10.1016/j.chemosphere.2021.130683] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 04/20/2021] [Accepted: 04/22/2021] [Indexed: 06/12/2023]
Abstract
An essential step in human biomonitoring or molecular epidemiology programs is to estimate human exposure to environmental chemicals. Despite significant progress in the capabilities of analytical methods, the number of pollutants and their metabolites keeps increasing continuously. Some of these relatively unknown chemicals of emerging concern (CECs) may pose significant health risks to humans and biota, but remain virtually undetected in traditional HBM-studies. Non-target and suspect screening techniques based on high-resolution mass spectrometry (HRMS) perform the detection and identification of compounds without any a priori compound selection or chemical information and provide a more holistic overview of human exposure. In this study, 50 urine samples (25 female and 25 male) from a larger cohort of the Flemish Environment and Health Study (FLEHS IV, 2016-2020) have been submitted to suspect screening analysis, with the aim of detecting and identifying new CECs. For this purpose, an analytical method has been developed, optimised and evaluated in terms of analytical performance. Satisfactory results were obtained in terms of reproducibility, sensitivity and quality control. Data-mining was performed through the combination of two different workflows. The use of two complementary workflows enhanced the number of identified compounds. As a result, 45 CECs have been identified with a level of confidence ranged between 3 and 1. Most of the identified compounds were metabolisation products, many of which were currently not included in the targeted measurements of FLEHS IV. The identified chemicals and metabolites could be used as candidate biomarkers of exposure in future studies. Overall, the newly developed suspect screening workflow of this pilot study provided complementary and promising results for future HBM-programs.
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Affiliation(s)
| | - Gabriela Castro
- Department of Analytical Chemistry, Nutrition and Food Sciences. Institute of Research on Chemical and Biological Analysis (IAQBUS). Universidad de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Michiel Bastiaensen
- Toxicological Center, University of Antwerp, Universiteitsplein 1, 2610, Wilrijk, Belgium
| | - Celine Gys
- Toxicological Center, University of Antwerp, Universiteitsplein 1, 2610, Wilrijk, Belgium
| | - Nik van Larebeke
- Department of Radiotherapy and Experimental Cancerology, De Pintelaan 185, 9000 Ghent, Belgium and Vrije Universiteit Brussel (VUB), Department of Analytical, Environmental and Geochemistry (AMGC), Pleinlaan 2, 1050, Brussels, Belgium
| | - Greet Schoeters
- VITO Health, Flemish Institute for Technological Research (VITO), Boeretang 200, 2400, Mol, Belgium; Department of Biomedical Sciences, University of Antwerp, Universiteitsplein 1, 2610, Wilrijk, Belgium
| | - Adrian Covaci
- Toxicological Center, University of Antwerp, Universiteitsplein 1, 2610, Wilrijk, Belgium.
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15
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Tian F, Qiao C, Wang C, Luo J, Guo L, Pang T, Li J, Wang R, Pang R, Xie H. Development and validation of a method for the analysis of trifludimoxazin, picarbutrazox and pyraziflumid residues in cereals, vegetables and fruits using ultra-performance liquid chromatography/tandem mass spectrometry. Microchem J 2021. [DOI: 10.1016/j.microc.2021.106477] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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16
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Preparation of silver with an ultrathin molecular imprinted layer for detection of carbendazim by SERS. CHEMICAL PAPERS 2021. [DOI: 10.1007/s11696-021-01811-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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17
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Wang Y, Gao W, Li Y, Xiao Y, Song W, Yao T, Cheng M, Wang W, Hou R. Establishment of a HPLC-MS/MS Detection Method for Glyphosate, Glufosinate-Ammonium, and Aminomethyl Phosphoric Acid in Tea and Its Use for Risk Exposure Assessment. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:7969-7978. [PMID: 34232658 DOI: 10.1021/acs.jafc.1c01757] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The tea shrub is grown in long-standing orchards, an environment that is suitable for persistent weed growth, which is increasingly controlled by herbicides. Therefore, there is increasing concern that tea consumers may be exposed to herbicide residues. In this study, the levels of glufosinate-ammonium (GLU), glyphosate [N-(phosphonomethyl) glycine; PMG], and its metabolite aminomethyl phosphoric acid (AMPA) were determined in tea samples by HPLC-MS/MS using several current purification methods and a new method that we developed herein. The matrix effect of our proposed method was between -27.3 and 27.7%, which was lower than that in other methods, indicating that this method effectively reduced the interference of tea matrix in the mass spectrometry process. This method was used to determine the levels of PMG, GLU, and AMPA in 780 samples, including six traditional Chinese teas (green tea, black tea, oolong tea, dark tea, white tea, and yellow tea) and a floral tea, from 14 provinces of China. Probability estimates showed that the 95th percentile risk entropy values of the three pesticide residues were far below the acceptable risk level. The risk assessment results showed that exposure to PMG, GLU, and AMPA caused by drinking tea beverages poses no significant risk to human health.
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Affiliation(s)
- Yong Wang
- State Key Laboratory of Tea Plant Biology and Utilization; School of Tea and Food Science & Technology, Anhui Agricultural University, Hefei 230036, China
- Analysis and Testing Center, Huangshan University, Huangshan 245000, China
| | - Wanjun Gao
- State Key Laboratory of Tea Plant Biology and Utilization; School of Tea and Food Science & Technology, Anhui Agricultural University, Hefei 230036, China
| | - Yeyun Li
- State Key Laboratory of Tea Plant Biology and Utilization; School of Tea and Food Science & Technology, Anhui Agricultural University, Hefei 230036, China
| | - Yu Xiao
- Hefei Customs District Technical Center, Anhui Key Lab of Analysis and Detection for Food Safety, Hefei 230022, China
| | - Wei Song
- Hefei Customs District Technical Center, Anhui Key Lab of Analysis and Detection for Food Safety, Hefei 230022, China
| | - Ting Yao
- Analysis and Testing Center, Huangshan University, Huangshan 245000, China
| | - Manhuan Cheng
- Analysis and Testing Center, Huangshan University, Huangshan 245000, China
| | - Wenjuan Wang
- Analysis and Testing Center, Huangshan University, Huangshan 245000, China
| | - Ruyan Hou
- State Key Laboratory of Tea Plant Biology and Utilization; School of Tea and Food Science & Technology, Anhui Agricultural University, Hefei 230036, China
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18
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Xu Q, Liu Z, Yan C, Lu R, Zhou W. 1-Octyl-3-methylimidazolium hexafluorophosphate-functionalised magnetic poly β-cyclodextrin for magnetic solid-phase extraction ofpyrethroids from tea infusions. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2021; 38:1743-1754. [PMID: 34237240 DOI: 10.1080/19440049.2021.1943004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
In this study, a novel sorbent, 1-octyl-3-methylimidazolium hexafluorophosphate functionalised magnetic poly β-cyclodextrin, was successfully synthesised and applied to magnetic solid-phase extraction for the determination of pyrethroids in tea infusions. The sorbent was characterised by transmission electron microscopy, energy-dispersive spectroscopy, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, vibrating sample magnetometer and Brunauer-Emmett-Teller measurement. All factors affecting extraction efficiency, such as sorbent amount, extraction time, ionic strength and desorption conditions, were optimised individually. Under the chosen conditions, wide linearity (2.5-500 μg L-1) with determination coefficients ranging from 0.9995 to 0.9999, low limits of detection of 0.32-0.54 μg L-1 and good precision (intra-day: 2.6-7.0%; inter-day: 3.5-7.6%) were achieved for four pyrethroids in tea infusions. The relative recoveries of target analytes in real tea infusion samples were from 70% to 101% with relative standard deviations lower than 9.1%. We conclude that the proposed method is promising in the detection of pyrethroids in tea infusions.
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Affiliation(s)
- Qinqin Xu
- Department of Applied Chemistry, China Agricultural University, Beijing, China
| | - Zikai Liu
- Department of Applied Chemistry, China Agricultural University, Beijing, China
| | - Chen Yan
- Department of Applied Chemistry, China Agricultural University, Beijing, China
| | - Runhua Lu
- Department of Applied Chemistry, China Agricultural University, Beijing, China
| | - Wenfeng Zhou
- Department of Applied Chemistry, China Agricultural University, Beijing, China
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19
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Chen H, You T, Zong L, Mukhametova LI, Zherdev DO, Eremin SA, Ding Y, Wang M, Hua X. Competitive and noncompetitive fluorescence polarization immunoassays for the detection of benzothiostrobin using FITC-labeled dendrimer-like peptides. Food Chem 2021; 360:130020. [PMID: 34000636 DOI: 10.1016/j.foodchem.2021.130020] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 04/22/2021] [Accepted: 05/03/2021] [Indexed: 11/27/2022]
Abstract
Peptides obtained from phage display libraries are valuable reagents for small-molecule immunoassays. However, their application in fluorescence polarization immunoassays (FPIAs) is limited by phage particles. Here, monomer, dendrimer-like dimer, tetramer peptidomimetic and anti-immunocomplex tracers were designed and synthesized using lysine as special scaffolds and spacers to develop competitive and noncompetitive FPIAs for benzothiostrobin. The affinity between tracers and monoclonal antibodies or immunocomplexes increased with the tracer valence. A higher signal-to-noise ratio and sensitivity could be generated in the FPIAs based on tetramer tracers. The sensitivities of competitive (50% inhibitory concentration) and noncompetitive (50% saturation concentration) FPIAs were 19.71 ± 4.65 and 40.43 ± 2.73 ng mL-1, respectively. The spiked recoveries were 78.3%-105.2% with relative standard deviations (RSDs) of 0.7%-15.4% for the competitive FPIA, while 78.7%-115.3% with RSDs of 0.7%-12.5% for the noncompetitive FPIA. The amounts of benzothiostrobin in rice detected by the FPIAs were consistent with those detected by high performance liquid chromatography.
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Affiliation(s)
- He Chen
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China
| | - Tianyang You
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China
| | - Lingfeng Zong
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China
| | - Liliya I Mukhametova
- Faculty of Chemistry, M.V. Lomonosov Moscow State University, Moscow 119991, Russia
| | - Dmitry O Zherdev
- Faculty of Chemistry, M.V. Lomonosov Moscow State University, Moscow 119991, Russia
| | - Sergei A Eremin
- Faculty of Chemistry, M.V. Lomonosov Moscow State University, Moscow 119991, Russia
| | - Yuan Ding
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China
| | - Minghua Wang
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China
| | - Xiude Hua
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China.
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20
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Sun R, Yang W, Li Y, Sun C. Multi-residue analytical methods for pesticides in teas: a review. Eur Food Res Technol 2021. [DOI: 10.1007/s00217-021-03765-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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21
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Zhang L, Shi L, He Q, Li Y. A rapid multiclass method for antibiotic residues in goat dairy products by UPLC-quadrupole/electrostatic field orbitrap high-resolution mass spectrometry. J Anal Sci Technol 2021. [DOI: 10.1186/s40543-021-00268-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Abstract
Background
Sulfanilamides, quinolones, nitroimidazoles, tetracyclines, cephalosporins, macrolides, and β-lactam are common tools in agriculture and can be found in animal-based foods such as goat milk and goat dried milk. To evaluate the risk of these species, reliable analytical methods are needed for accurate concentration determination, especially in goat milk and goat dried milk.
Method
We describe a method based on PRiME extraction coupled with UPLC-quadrupole/electrostatic field orbitrap high-resolution mass spectrometry to accomplish this task.
Result
Under optimal conditions, the limit of quantification for all antibiotics was 0.5–100 μg/L in goat milk and goat dried milk samples. The recoveries were 60.6–110.0% for goat milk and 60.1–109.6% for goat dried milk with a coefficient of variation less than 15%. The detection limits were 0.5–1.0 μg/kg. The limits of quantification for the analytes were 5.0–10.0 μg/kg. Finally, the method was used to screen veterinary antibiotics in 50 local goat milk and goat dried milk samples; metronidazole and enrofloxacin were detected in goat milk.
Conclusion
This method offers good reliability and the capacity for simultaneous detection can be used to detect residual contents and evaluate health risks in goat milk and goat dried milk.
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22
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Zhu Y, Dong F, Liu X, Wu X, Xu J, Zheng Y. Evaluation of clean-up procedures and sample dilution in multi-residue pesticide analysis of spices and herbs by UPLC-MS/MS. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2020; 38:326-338. [PMID: 33301371 DOI: 10.1080/19440049.2020.1852319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
The matrix effect in complex spices and herbs presents a great challenge to the simultaneous, rapid, quantitative analysis of multiple pesticides by mass spectrometry. The aim of this work was to develop and validate an effective UPLC-MS/MS multi-residue method for the analysis of pesticide residues to reduce matrix effects in four spices and one herb and infer which component caused the matrix effect in black pepper. In this paper, we highlight the importance of reducing matrix effects. SPE and dilution factors combined with d-SPE were two approaches to reduce matrix effects compared with d-SPE, and dilution (5-fold) combined with d-SPE was more effective than SPE in reducing matrix effects. With the validated d-SPE method combined with dilution (5-fold), 22 pesticides showed satisfactory recovery (77 to 114%) and RSDs (1.4%-19.1%) at three spiked concentrations in dried chilli pepper, star anise, mint, and cinnamon skin, but not in black pepper. Compared to the other three spices and one herb, black pepper appeared to have a stronger matrix effect. D-SPE method combined with dilution (5-fold) was not suitable for black pepper and required more efficient purification methods and higher dilution factors. With the validated SPE method combined with 10-fold dilution, 19 pesticides showed satisfactory recovery (71% to 113%) and RSDs (2.1%-18.2%) at three spiked concentrations in black pepper. We ascertained that piperine was the component contributing most to the matrix effect in black pepper. The method was used to monitor 15 market samples.
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Affiliation(s)
- Yuxiao Zhu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences , Beijing, P. R. China
| | - Fengshou Dong
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences , Beijing, P. R. China
| | - Xingang Liu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences , Beijing, P. R. China
| | - Xiaohu Wu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences , Beijing, P. R. China
| | - Jun Xu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences , Beijing, P. R. China
| | - Yongquan Zheng
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences , Beijing, P. R. China
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Simultaneous determination of neonicotinoids and fipronils in tea using a modified QuEChERS method and liquid chromatography-high resolution mass spectrometry. Food Chem 2020; 329:127159. [DOI: 10.1016/j.foodchem.2020.127159] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Revised: 05/11/2020] [Accepted: 05/25/2020] [Indexed: 12/17/2022]
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24
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Wang SY, Shi XC, Liu FQ, Laborda P. Chromatographic Methods for Detection and Quantification of Carbendazim in Food. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:11880-11894. [PMID: 33059442 DOI: 10.1021/acs.jafc.0c04225] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Carbendazim (CBZ), which is a fungicide widely used for the management of plant diseases, has been detected in a number of food products. The negative effects of CBZ to human health have stimulated the reduction of the maximum residue limits (MRLs), and subsequently the development of reliable and sensitive detection methods. Here, we are reviewing for the first time all reported chromatographic methods for the detection and quantification of CBZ in food. Several techniques, including liquid chromatography (LC), thin layer chromatography (TLC), micellar electrokinetic chromatography (MEKC), and supercritical fluid chromatography (SFC), were used for the separation and detection of CBZ, showing diverse characteristics and sensitivity. Some methods allowed the specific determination of CBZ, whereas other methods were successfully applied for the simultaneous quantification of a huge number of pesticides. Most reported methods showed limits of detection (LOD) and quantification (LOQ) lower than the MRLs. Relevant efforts in the field have been directed toward the simplification and optimization of the extraction steps prior to the chromatographic separation to increase the recovery and reduce the matrix effects. In this Review, the matrices, extraction procedures, and separation and detection parameters are detailed and compared in order to provide new insights on the development of new reliable methods for the detection of CBZ in food.
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Affiliation(s)
- Su-Yan Wang
- School of Life Sciences, Nantong University, Nantong 226019, People's Republic of China
| | - Xin-Chi Shi
- School of Life Sciences, Nantong University, Nantong 226019, People's Republic of China
| | - Feng-Quan Liu
- Jiangsu Key Laboratory for Food Quality and Safety, State Key Laboratory Cultivation Base of Ministry of Science and Technology, Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 226019, People's Republic of China
| | - Pedro Laborda
- School of Life Sciences, Nantong University, Nantong 226019, People's Republic of China
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25
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Yang J, Luo F, Zhou L, Sun H, Yu H, Wang X, Zhang X, Yang M, Lou Z, Chen Z. Residue reduction and risk evaluation of chlorfenapyr residue in tea planting, tea processing, and tea brewing. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 738:139613. [PMID: 32534281 DOI: 10.1016/j.scitotenv.2020.139613] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 05/15/2020] [Accepted: 05/19/2020] [Indexed: 06/11/2023]
Abstract
The chlorfenapyr residues in the entire tea chain, i.e., in tea planting, tea processing, and tea brewing, were systematically investigated. The degradation rate constants of chlorfenapyr in the tea plants ranged from 0.2460 to 0.2870 with the half-life of 2.4-3.0 days, and 87.5-89.9% of the chlorfenapyr in tea shoots dissipated in the interval of 7 days. In the processing process of both black tea and green tea, the chlorfenapyr residue decreased by 59.1-67.6% compared with the residue in tea shoots due to high vapor pressure (1.2 × 10-2 mPa 25 °C), and drying was the key step that dissipated the chlorfenapyr. A low leaching efficiency of 2.2-3.4% from tea leaves to tea infusion, resulted in low water solubility (0.14 mg L-1 25 °C), indicated that >90% of the residual chlorfenapyr was eliminated before the intake of tea infusion. On the basis of these results, an extremely large proportion of the chlorfenapyr deposited on tea shoots was degraded during tea planting, tea processing, and tea brewing, and the health risk was reduced primarily in the first and the last step rather than during tea processing. The remaining 0.2% chlorfenapyr sprayed on the tea shoots represents a negligible health risk based on the RQ assessment. The pesticides with high vapor pressure and low water solubility were more recommended in tea garden for pest control.
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Affiliation(s)
- Jie Yang
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China; Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agricultural, Hangzhou 310008, China
| | - Fengjian Luo
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China; Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agricultural, Hangzhou 310008, China
| | - Li Zhou
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China; Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agricultural, Hangzhou 310008, China.
| | - Hezhi Sun
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China; Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agricultural, Hangzhou 310008, China
| | - Huan Yu
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China; Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agricultural, Hangzhou 310008, China
| | - Xinru Wang
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China; Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agricultural, Hangzhou 310008, China
| | - Xinzhong Zhang
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China; Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agricultural, Hangzhou 310008, China
| | - Mei Yang
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China; Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agricultural, Hangzhou 310008, China
| | - Zhengyun Lou
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China; Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agricultural, Hangzhou 310008, China
| | - Zongmao Chen
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China; Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agricultural, Hangzhou 310008, China
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Restricted access media-imprinted nanomaterials based on a metal–organic framework for highly selective extraction of fluoroquinolones in milk and river water. J Chromatogr A 2020; 1626:461364. [DOI: 10.1016/j.chroma.2020.461364] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 06/20/2020] [Accepted: 06/20/2020] [Indexed: 12/12/2022]
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27
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Determination of thirteen acidic phytohormones and their analogues in tea (Camellia sinensis) leaves using ultra high performance liquid chromatography tandem mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2020; 1149:122144. [PMID: 32447251 DOI: 10.1016/j.jchromb.2020.122144] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Revised: 04/10/2020] [Accepted: 05/01/2020] [Indexed: 01/21/2023]
Abstract
Trace plant hormones play an important role in tea growth, development and quick response to biotic and abiotic stresses. However, lack of a sensitive method limits the research on plant hormone regulation for tea quality and yields. Herein, a highly sensitive method was developed using ultra high performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) for profiling and quantification of 13 acidic phytohormones and their analogues, including auxins, abscisic acid and gibberellins in fresh tea leaves. After optimizing the different C18 columns and mobile phase systematically, an Agilent Eclipse Plus C18 column combined with the mobile phase A (acetonitrile) and B (water) was employed. Target acidic phytohormones were extracted using acidified methanol, and tea matrices were cleaned up by dispersive solid phase adsorbents of polyvinylpolypyrrolidone (PVPP) and graphitized carbon black (GCB) followed by polymer-based mixed-mode cation-exchange solid phase extraction. The method showed good linearity for all 13 analytes with regression coefficients (R2) > 0.998. Satisfactory recoveries of 12 analytes spiked with three levels ranged from 71.8% to 109.9%, while intra-day and inter-day precisions were below 20%. Limits of detection (LODs) and limits of quantitation (LODs) for 12 acidic phytohormones were 0.1-4.2 μg kg-1 and 0.3-13.9 μg kg-1, respectively. Finally, this method was firstly employed to analyze 13 analytes in fresh tea leaves (with the treatment of dormancy, light qualities, exogenous hormones and infestation of pests), highlighting its sufficient capability for rapid analysis of multiclass phytohormones in agriculture field.
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