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Wu Y, Li J, Zhu J, Zhang Z, Zhang S, Wang M, Hua X. A Rapid and Sensitive Gold Nanoparticle-Based Lateral Flow Immunoassay for Chlorantraniliprole in Agricultural and Environmental Samples. Foods 2024; 13:205. [PMID: 38254506 PMCID: PMC10814772 DOI: 10.3390/foods13020205] [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: 11/01/2023] [Revised: 01/02/2024] [Accepted: 01/05/2024] [Indexed: 01/24/2024] Open
Abstract
Chlorantraniliprole (CAP) is a new type of diamide insecticide that is mainly used to control lepidopteran pests. However, it has been proven to be hazardous to nontarget organisms, and the effects of its residues need to be monitored. In this study, five hybridoma cell lines were developed that produced anti-CAP monoclonal antibodies (mAbs), of which the mAb originating from the cell line 5C5B9 showed the highest sensitivity and was used to develop a gold nanoparticle-based lateral flow immunoassay (AuNP-LFIA) for CAP. The visible limit of detection of the AuNP-LFIA was 1.25 ng/mL, and the detection results were obtained in less than 10 min. The AuNP-LFIA showed no cross-reactivity for CAP analogs, except for tetraniliprole (50%) and cyclaniliprole (5%). In the detection of spiked and blind samples, the accuracy and reliability of the AuNP-LFIA were confirmed by a comparison with spiked concentrations and verified by ultra-performance liquid chromatography-tandem mass spectrometry. Thus, this study provides the core reagents for establishing CAP immunoassays and a AuNP-LFIA for the detection of residual CAP.
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Affiliation(s)
- Yanling Wu
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (Y.W.); (J.L.); (J.Z.); (M.W.)
- State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China
| | - Jiao Li
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (Y.W.); (J.L.); (J.Z.); (M.W.)
- State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China
| | - Jie Zhu
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (Y.W.); (J.L.); (J.Z.); (M.W.)
- State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China
| | - Zhaoxian Zhang
- Key Laboratory of Agri-Food Safety of Anhui Province, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China;
| | - Shuguang Zhang
- College of Sciences, Nanjing Agricultural University, Nanjing 210095, China;
| | - Minghua Wang
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (Y.W.); (J.L.); (J.Z.); (M.W.)
- 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; (Y.W.); (J.L.); (J.Z.); (M.W.)
- State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China
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Lu X, Qin C, Cai J, Zhang M, Yu L, Li J, Wu Q. Study on the selectivity and phloem mobility of Fenoxaprop-P amino acid ester conjugates on rice and barnyard grass. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2022; 183:105086. [PMID: 35430076 DOI: 10.1016/j.pestbp.2022.105086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 03/14/2022] [Accepted: 03/22/2022] [Indexed: 06/14/2023]
Abstract
To improve the selectivity of the fenoxaprop herbicide to rice and barnyard grass, a series of fenoxaprop-P-ethyl-amino acid ester conjugates were designed and synthesized, and tested for biological activity as well as their phloem mobility. The bioassay results indicated that the target compounds possessed better activity against barnyard grass (Echinochloa crusgalli) than rape (Brassica campestris L.) at the concentration of 0.5 mmol/L. Compounds 3h and 3i, showed more than 70% control efficiency against barnyard grass, while less than 30% for rape. The compounds showed less impact on rice after spray treatment than in the germination test. Compounds 3i, 3j, and 3k showed excellently herbicidal activities against barnyard grass and low phytotoxicity to rice. Compound 3k showed 6.1% phytotoxicity to rice at a spray concentration of 0.25 mmol/L, better than fenoxaprop-P-ethyl (61.6%) at the same concentration. The selectivity results of the target compounds revealed that most of compounds obviously reduced phytotoxicity to rice while retaining herbicidal activity of barnyard grass. The herbicidal activity of compound 3d compared to FPE was increased by 50%, while its safety on rice was also increased by 50%. The concentration of the compounds in barnyard grass roots was higher than in rice roots, showing greater phloem mobility. In particular, the concentration of compound 3d on barnyard grass exhibited 142.72 mg/kg which was 3 times as much as Fenoxaprop, while its concentration on rice exhibited 3.65 mg/kg, the results revealed that the difference of phloem mobility might be the important reason for causing the selectivity.
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Affiliation(s)
- Xingliang Lu
- School of Agriculture, Yangtze University, Jingmi Road 88, Jingzhou 434025, China
| | - Chuan Qin
- School of Agriculture, Yangtze University, Jingmi Road 88, Jingzhou 434025, China
| | - Jinlong Cai
- School of Agriculture, Yangtze University, Jingmi Road 88, Jingzhou 434025, China
| | - Min Zhang
- School of Agriculture, Yangtze University, Jingmi Road 88, Jingzhou 434025, China
| | - Linhua Yu
- School of Agriculture, Yangtze University, Jingmi Road 88, Jingzhou 434025, China
| | - Junkai Li
- School of Agriculture, Yangtze University, Jingmi Road 88, Jingzhou 434025, China; Institute of Pesticides, Yangtze University, Jingmi Road 88, Jingzhou 434025, China
| | - Qinglai Wu
- School of Agriculture, Yangtze University, Jingmi Road 88, Jingzhou 434025, China; Institute of Pesticides, Yangtze University, Jingmi Road 88, Jingzhou 434025, China.
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3
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Yang X, Guo X, Yuan X, Chen B. K 2S 2O 8-promoted rearrangement of nitrones for the synthesis of benzo[ d]oxazoles. Org Chem Front 2022. [DOI: 10.1039/d2qo00680d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
An efficient route for the synthesis of valuable benzoxazoles has been developed through self-oxidative cyclization with N–O bond cleavage.
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Affiliation(s)
- Xueying Yang
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Department of Chemistry, Lanzhou University, Lanzhou, Gansu, China
| | - Xin Guo
- School of Chemistry and Chemical Engineering, North Minzu University, Yinchuan, China
| | - Xinglong Yuan
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Department of Chemistry, Lanzhou University, Lanzhou, Gansu, China
| | - Baohua Chen
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Department of Chemistry, Lanzhou University, Lanzhou, Gansu, China
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Khan NS, Pradhan D, Choudhary S, Saxena P, Poddar NK, Jain AK. Immunoassay-based approaches for development of screening of chlorpyrifos. J Anal Sci Technol 2021. [DOI: 10.1186/s40543-021-00282-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
AbstractChlorpyrifos (CPF) is an extensively used organophosphate pesticide for crop protection. However, there are concerns of it contaminating the environment and human health with estimated three lakh deaths annually. Detection of CPF in blood samples holds significance to avoid severe health outcomes due to continuous exposure. The most common techniques for CPF detection are Gas chromatography (GC) and high-performance liquid chromatography (HPLC). However, these techniques might not be feasible at the community healthcare level due to high-cost instrumentation, time-consuming sample preparation protocol and skilled analysts. Therefore, rapid, effective and economical methods such as immunoassay would be imperative for CPF detection in biological samples. The vital step in immunoassay development is the design of a potent immunogen from non-immunogenic molecules. The molecular modelling protocol could assist in redesigning known CPF linkers and inserting them at different substitutable positions of CPF to get distinctive CPF derivatives. Molecular docking and binding free energy analysis can be used to identify the CPF derivatives having a better binding affinity with carrier protein compared to CPF. The top-ranked CPF derivatives based on docking score and binding energy could be ideal for synthesis and immunogen development. The present review will comprehend technological trends in immunoassay kits for detecting chlorpyrifos from biological samples.
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Lin J, Li Y, Hu X, Chi W, Zeng S, Xu J. Discovery of novel 3‐{[(5,5‐dimethyl‐4,5‐dihydroisoxazol‐3‐yl)sulfonyl]methyl}benzo[d]isoxazole analogs as promising very long chain fatty acids inhibitors. J Heterocycl Chem 2020. [DOI: 10.1002/jhet.4162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jian Lin
- Dongguan HEC Pesticides R&D Co., Ltd. Dongguan China
- College of Chemistry Biology and Environmental Engineering Xiangnan University Chenzhou China
| | - Yitao Li
- Dongguan HEC Pesticides R&D Co., Ltd. Dongguan China
| | - Xiaoyun Hu
- Dongguan HEC Pesticides R&D Co., Ltd. Dongguan China
| | - Weilin Chi
- Dongguan HEC Pesticides R&D Co., Ltd. Dongguan China
| | - Shuiming Zeng
- Dongguan HEC Pesticides R&D Co., Ltd. Dongguan China
| | - Junxing Xu
- Dongguan HEC Pesticides R&D Co., Ltd. Dongguan China
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Xu Y, Jing X, Zhai W, Li X. The enantioselective enrichment, metabolism, and toxicity of fenoxaprop‐ethyl and its metabolites in zebrafish. Chirality 2020; 32:990-997. [DOI: 10.1002/chir.23222] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Revised: 02/06/2020] [Accepted: 03/04/2020] [Indexed: 11/10/2022]
Affiliation(s)
- Yangguang Xu
- Department of Fire Control and CommandChina People's Police University Langfang China
| | - Xu Jing
- Department of Applied Chemistry, College of ScienceChina Agricultural University Beijing China
| | - Wangjing Zhai
- Department of Applied Chemistry, College of ScienceChina Agricultural University Beijing China
| | - Xuefeng Li
- Department of Applied Chemistry, College of ScienceChina Agricultural University Beijing China
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7
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Yao L, Ma H, Nie Z, Nie H, Zhang D, Wei Z, Shen Z, Chen W, Jiang R, Zhang S. A practical strategy to access chiral α-aryloxy carboxylic acids through ion-pairing directed asymmetric hydrogenation. Org Chem Front 2020. [DOI: 10.1039/d0qo01205j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of optically active α-aryloxy functionalized carboxylic acids were obtained via non-covalent interaction assisted highly efficient asymmetric hydrogenation.
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8
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Yan Z, Yang Z, Deng X, Lin D, Wu M, Li J, Chen A, Ye J, Hu A, Liao H. Novel aryloxyphenoxypropionate derivates containing benzofuran moiety: Design, synthesis, herbicidal activity, docking study and theoretical calculation. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2019; 154:78-87. [PMID: 30765060 DOI: 10.1016/j.pestbp.2018.12.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2018] [Revised: 12/14/2018] [Accepted: 12/19/2018] [Indexed: 06/09/2023]
Abstract
A series of novel aryloxyphenoxypropionate (APP) herbicides containing benzofuran moiety were designed, synthesized and tested for herbicidal activity. The bioassay results indicated that most of target compounds possessed moderate to good herbicidal activity against monocotyledonous weeds. Compounds 5a-5d and 6a-6d showed 100% control efficiency against crabgrass (Digitaria sanguinalis) and barnyard grass (Echinochloa crus-galli) in both pre-emergence and post-emergence treatments at the dosage of 1500 g a.i. ha-1. Compound 6c was the most promising, with herbicidal activity better than clodinafop-propargyl. Molecular docking for compound 6c and its hydrolysis acid 1c were performed. ACCase activities of some compounds were also tested. Theoretical calculations for corresponding hydrolysis products 1a-1ewere carried out. Based on the results of molecular docking, enzyme activity test and theoretical calculation, the potential mechanism for herbicidal activity of these compounds was evaluated.
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Affiliation(s)
- Zhongzhong Yan
- College of Chemistry and Chemical Engineering, Hunan University, No.1 Lushan Road(s), Changsha 410082, China
| | - Zihui Yang
- College of Chemistry and Chemical Engineering, Hunan University, No.1 Lushan Road(s), Changsha 410082, China
| | - Xuelei Deng
- College of Biology, Hunan University, No.1 Lushan Road(s), Changsha 410082, China
| | - Ding Lin
- College of Chemistry and Chemical Engineering, Hunan University, No.1 Lushan Road(s), Changsha 410082, China
| | - Mingfeng Wu
- National Engineering Research Center for Agrochemicals, Hunan Research Institute of Chemical Industry, Changsha 410007, China
| | - Jianming Li
- National Engineering Research Center for Agrochemicals, Hunan Research Institute of Chemical Industry, Changsha 410007, China
| | - Aiyu Chen
- College of Chemistry and Chemical Engineering, Hunan University, No.1 Lushan Road(s), Changsha 410082, China
| | - Jiao Ye
- College of Chemistry and Chemical Engineering, Hunan University, No.1 Lushan Road(s), Changsha 410082, China
| | - Aixi Hu
- College of Chemistry and Chemical Engineering, Hunan University, No.1 Lushan Road(s), Changsha 410082, China.
| | - Hongdong Liao
- College of Biology, Hunan University, No.1 Lushan Road(s), Changsha 410082, China.
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Jing X, Wang T, Yang J, Wang Y, Xu H. Effects of biochar on the fate and toxicity of herbicide fenoxaprop-ethyl in soil. ROYAL SOCIETY OPEN SCIENCE 2018; 5:171875. [PMID: 29892380 PMCID: PMC5990734 DOI: 10.1098/rsos.171875] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2017] [Accepted: 03/27/2018] [Indexed: 06/02/2023]
Abstract
Biochar, as a soil amendment in agriculture, has attracted considerable attention. In the study, the fate and toxicity of the herbicide fenoxaprop-ethyl were evaluated in soils with and without 5% rice husk biochar amendment. Fenoxaprop-ethyl and metabolite fenoxaprop degradation followed first-order kinetics in the two soils. Fenoxaprop-ethyl decreased fast with half-lives less than 2 days. Large amounts of fenoxaprop formed and remained in the control soil. However, fenoxaprop was much lower in the biochar-amended soil with reduction over 85% on the 35th day. The estimated half-lives of fenoxaprop were 56.9 and 1.5 days in the control and biochar-amended soils, respectively. Biochar restrained the formation and promoted the dissipation of fenoxaprop. Biological indicator earthworms (Eisenia fetida) were used in a 14-day acute toxicity test. Fenoxaprop-ethyl showed low toxicity to earthworms with LC50 value of 322.9 µg g-1. Biochar amendment was non-toxic to earthworms and effectively reduced the toxicity. The results suggested that the application of biochar may reduce the risks of fenoxaprop-ethyl in the soil environment.
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Affiliation(s)
- Xu Jing
- College of Food Science and Engineering, Shanxi Agricultural University, Taigu, Shanxi 030801, People's Republic of China
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10
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Huang D, Liu A, Liu W, Liu X, Ren Y, Zheng X, Pei H, Xiang J, Huang M, Wang X. Synthesis and insecticidal activities of novel 1H-pyrazole-5-carboxylic acid derivatives. HETEROCYCL COMMUN 2017. [DOI: 10.1515/hc-2017-0110] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
AbstractFourteen 1
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11
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Jing X, Yao G, Liu D, Liu C, Wang F, Wang P, Zhou Z. Exposure of frogs and tadpoles to chiral herbicide fenoxaprop-ethyl. CHEMOSPHERE 2017; 186:832-838. [PMID: 28826131 DOI: 10.1016/j.chemosphere.2017.07.132] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Revised: 06/25/2017] [Accepted: 07/25/2017] [Indexed: 06/07/2023]
Abstract
Pesticides have long been considered to a risk factor of amphibian population declines. The bioaccumulation and elimination of fenoxaprop-ethyl (FE) in frogs and tadpoles were studied and the main metabolites fenoxaprop (FA) and 6-chloro-2,3-dihydrobenzoxazol-2-one (CDHB) were monitored. The acute toxicity and genotoxicity of the enantiomers to tadpoles was also studied. After both oral administration and aqueous solution exposure, FE was not found in frogs, while FA was formed and accumulated in liver, kidney, brain, eggs, skin, thigh muscle and blood with preferential accumulation of R-FA. The presence of FA in frog eggs suggested maternal transfer in females and potential impacts to offsprings. The elimination of FA in frog tissues was also enantioselective with a preferential metabolism of R-FA (kidney) or S-FA (liver, eggs, skin, muscle and whole blood). FE and FA were hardly detectable in tadpoles after aqueous solution exposure, while CDHB was accumulated and eliminated as first-order kinetics with half-life of 37.1 h. Mortality of tadpoles and micronucleus rate in peripheral blood erythrocytes of tadpoles were used to evaluate the enantioselective acute toxicity and genotoxicity. Only CDHB induced significant acute toxicity to tadpole with 96-h LC50 value of 30.4 μg/mL, and rac-FA, S-FA and CDHB showed genotoxicity.
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Affiliation(s)
- Xu Jing
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, Beijing, 100193, PR China
| | - Guojun Yao
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, Beijing, 100193, PR China
| | - Donghui Liu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, Beijing, 100193, PR China
| | - Chang Liu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, Beijing, 100193, PR China
| | - Fang Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, Beijing, 100193, PR China
| | - Peng Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, Beijing, 100193, PR China
| | - Zhiqiang Zhou
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, Beijing, 100193, PR China.
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12
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Dong W, Liu K, Wang F, Xin F, Zhang W, Zhang M, Wu H, Ma J, Jiang M. The metabolic pathway of metamifop degradation by consortium ME-1 and its bacterial community structure. Biodegradation 2017; 28:181-194. [PMID: 28265780 DOI: 10.1007/s10532-017-9787-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Accepted: 02/23/2017] [Indexed: 12/17/2022]
Abstract
Metamifop is universally used in agriculture as a post-emergence aryloxyphenoxy propionate herbicide (AOPP), however its microbial degradation mechanism remains unclear. Consortium ME-1 isolated from AOPP-contaminated soil can degrade metamifop completely after 6 days and utilize it as the carbon source for bacterial growth. Meanwhile, consortium ME-1 possessed the ability to degrade metamifop stably under a wide range of pH (6.0-10.0) or temperature (20-42 °C). HPLC-MS analysis shows that N-(2-fluorophenyl)-2-(4-hydroxyphenoxy)-N-methyl propionamide, 2-(4-hydroxyphenoxy)-propionic acid, 6-chloro-2-benzoxazolinone and N-methyl-2-fluoroaniline, were detected and identified as four intermediate metabolites. Based on the metabolites identified, a putative metabolic pathway of metamifop was proposed for the first time. In addition, the consortium ME-1 was also able to transform or degrade other AOPP such as fenoxaprop-p-ethyl, clodinafop-propargyl, quizalofop-p-ethyl and cyhalofop-butyl. Moreover, the community structure of ME-1 with lower microbial diversity compared with the initial soil sample was investigated by high throughput sequencing. β-Proteobacteria and Sphingobacteria were the largest class with sequence percentages of 46.6% and 27.55% at the class level. In addition, 50 genera were classified in consortium ME-1, of which Methylobacillus, Sphingobacterium, Bordetella and Flavobacterium were the dominant genera with sequence percentages of 25.79, 25.61, 14.68 and 9.55%, respectively.
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Affiliation(s)
- Weiliang Dong
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, 211816, People's Republic of China.,Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing, 211816, People's Republic of China
| | - Kuan Liu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, 211816, People's Republic of China
| | - Fei Wang
- College of Bioscience and Bioengineering, Jiangxi Agricultural University, Nanchang, 330045, People's Republic of China
| | - Fengxue Xin
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, 211816, People's Republic of China.,Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing, 211816, People's Republic of China
| | - Wenming Zhang
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing, 211816, People's Republic of China
| | - Min Zhang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, 211816, People's Republic of China.,Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing, 211816, People's Republic of China
| | - Hao Wu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, 211816, People's Republic of China.,Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing, 211816, People's Republic of China
| | - Jiangfeng Ma
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, 211816, People's Republic of China. .,Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing, 211816, People's Republic of China.
| | - Min Jiang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, 211816, People's Republic of China. .,Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing, 211816, People's Republic of China.
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13
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Lin D, Xiao M, Yang Z, Li B, Hu A, Ye J. Synthesis and herbicidal activity of N-(2,2-dimethyl-7-alkoxy-2,3-dihydrobenzofuran-5-yl)-2-(4-arylxoyphenoxy)propionamides. Chem Res Chin Univ 2016. [DOI: 10.1007/s40242-016-6305-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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14
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Metabolic Pathway Involved in 6-Chloro-2-Benzoxazolinone Degradation by Pigmentiphaga sp. Strain DL-8 and Identification of the Novel Metal-Dependent Hydrolase CbaA. Appl Environ Microbiol 2016; 82:4169-4179. [PMID: 27208123 DOI: 10.1128/aem.00532-16] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Accepted: 04/27/2016] [Indexed: 11/20/2022] Open
Abstract
UNLABELLED 6-Chloro-2-benzoxazolinone (CDHB) is a precursor of herbicide, insecticide, and fungicide synthesis and has a broad spectrum of biological activity. Pigmentiphaga sp. strain DL-8 can transform CDHB into 2-amino-5-chlorophenol (2A5CP), which it then utilizes as a carbon source for growth. The CDHB hydrolase (CbaA) was purified from strain DL-8, which can also hydrolyze 2-benzoxazolinone (BOA), 5-chloro-2-BOA, and benzamide. The specific activity of purified CbaA was 5,900 U · mg protein(-1) for CDHB, with Km and kcat values of 0.29 mM and 8,500 s(-1), respectively. The optimal pH for purified CbaA was 9.0, the highest activity was observed at 55°C, and the inactive metal-free enzyme could be reactivated by Mg(2+), Ni(2+), Ca(2+), or Zn(2+) Based on the results obtained for the CbaA peptide mass fingerprinting and draft genome sequence of strain DL-8, cbaA (encoding 339 amino acids) was cloned and expressed in Escherichia coli BL21(DE3). CbaA shared 18 to 21% identity with some metal-dependent hydrolases of the PF01499 family and contained the signature metal-binding motif Q127XXXQ131XD133XXXH137 The conserved amino acid residues His288 and Glu301 served as the proton donor and acceptor. E. coli BL21(DE3-pET-cbaA) resting cells could transform 0.2 mM CDHB into 2A5CP. The mutant strain DL-8ΔcbaA lost the ability to degrade CDHB but retained the ability to degrade 2A5CP, consistent with strain DL-8. These results indicated that cbaA was the key gene responsible for CDHB degradation by strain DL-8. IMPORTANCE 2-Benzoxazolinone (BOA) derivatives are widely used as synthetic intermediates and are also an important group of allelochemicals acting in response to tissue damage or pathogen attack in gramineous plants. However, the degradation mechanism of BOA derivatives by microorganisms is not clear. In the present study, we reported the identification of CbaA and metabolic pathway responsible for the degradation of CDHB in Pigmentiphaga sp. DL-8. This will provide microorganism and gene resources for the bioremediation of the environmental pollution caused by BOA derivatives.
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Wang F, Ren YJ, Dong MH. Molecular design, synthesis and anticoagulant activity evaluation of fluorinated dabigatran analogues. Bioorg Med Chem 2016; 24:2739-53. [DOI: 10.1016/j.bmc.2016.04.038] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Revised: 04/19/2016] [Accepted: 04/20/2016] [Indexed: 11/29/2022]
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Environmental Fate of Chiral Herbicide Fenoxaprop-ethyl in Water-Sediment Microcosms. Sci Rep 2016; 6:26797. [PMID: 27225540 PMCID: PMC4880935 DOI: 10.1038/srep26797] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2016] [Accepted: 05/10/2016] [Indexed: 11/25/2022] Open
Abstract
The environmental fate of the herbicide fenoxaprop-ethyl (FE) in water, sediment and water-sediment microcosm was studied and degradation products fenoxaprop (FA), ethyl-2-(4-hydroxyphenoxy)propanoate (EHPP), 2-(4-hydroxyphenoxy)propanoic acid (HPPA) and 6-chloro-2,3-dihydrobenzoxazol-2-one (CDHB) were monitored. FE, FA, EHPP and HPPA were chiral and the environmental behavior was investigated on an enantiomeric level. In water, sediment and water-sediment microcosms, fenoxaprop-ethyl degraded very fast with half-lives less than 1 day and it was found the herbicidally inactive S-enantiomer degraded faster. Fenoxaprop was the main primary degradation product which was quickly formed and the further degradation was relatively slow with half-lives of 6.4–12.4 days, and the S-enantiomer degraded faster too. EHPP, HPPA and CDHB could be found and S-EHPP and S-HPPA were degraded preferentially. The effects of microorganism and water content were investigated and it was found that the enantioselectivity was attributed to microorganisms. In sediment, the main degradation pathway of fenoxaprop-ethyl was hydrolysis and the degradation rate of fenoxaprop-ethyl increased with water content. The degradation products and enantioselectivity should be considered for the impact of fenoxaprop-ethyl on the aquatic system.
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Liu Q, Huang M, Liu A, Hu A, Lei M, Ren Y, Huang L. Synthesis and herbicidal activity of novel N-allyloxy/propargyloxy aryloxyphenoxy propionamide derivatives. Chem Res Chin Univ 2016. [DOI: 10.1007/s40242-016-5415-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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18
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Design, synthesis, biological evaluation and molecular docking studies of dabigatran analogs as potential thrombin inhibitors. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2015. [DOI: 10.1007/s13738-015-0743-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Chen H, Ren Y. Design, synthesis, and anti-thrombotic evaluation of some novel fluorinated thrombin inhibitor derivatives. Arch Pharm (Weinheim) 2015; 348:408-20. [PMID: 25881141 DOI: 10.1002/ardp.201400460] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Revised: 02/21/2015] [Accepted: 02/27/2015] [Indexed: 11/07/2022]
Abstract
Computer-aided simulation was used to design and synthesize nine novel fluorinated thrombin inhibitor derivatives. These compounds were confirmed by spectral analyses ((1)H NMR, (13)C NMR, and FT-ICR-MS). Their inhibitory activities against thrombin enzyme were evaluated by chromogenic assay. All the derivatives demonstrated thrombin inhibitory activity in vitro. Five of these compounds exerted more potent effects against thrombin enzyme compared with the reference drug argatroban. Compound 3-(2-(((4-carbamimidoylphenyl)amino)methyl)-1-ethyl-N-(2-fluoro-phenyl)-1H-benzo[d]imidazole-5-carboxamido)propanoic acid (IC50 = 3.52 ± 0.32 nmol/L) was a more potent inhibitor of thrombosis than argatroban (IC50 = 9.46 ± 0.92 nmol/L).
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Affiliation(s)
- Haifeng Chen
- College of Chemistry and Environmental Engineering, Shanghai Institute of Technology, Shanghai, China
| | - Yujie Ren
- College of Chemistry and Environmental Engineering, Shanghai Institute of Technology, Shanghai, China
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López-Moreno R, Mercader JV, Agulló C, Abad-Somovilla A, Abad-Fuentes A. Structure–immunogenicity relationship of kresoxim-methyl regioisomeric haptens. Org Biomol Chem 2013; 11:7361-71. [DOI: 10.1039/c3ob41570h] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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21
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Ren K, Jin Y, Cao M, Wang M. Detection of Aryloxyphenoxypropionate Herbicides by Enzyme-Linked Immunosorbent Assay. ANAL LETT 2012. [DOI: 10.1080/00032719.2012.655661] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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22
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An immunoassay for dibutyl phthalate based on direct hapten linkage to the polystyrene surface of microtiter plates. PLoS One 2011; 6:e29196. [PMID: 22216208 PMCID: PMC3246456 DOI: 10.1371/journal.pone.0029196] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2011] [Accepted: 11/22/2011] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Dibutyl phthalate (DBP) is predominantly used as a plasticizer inplastics to make them flexible. Extensive use of phthalates in both industrial processes and other consumer products has resulted in the ubiquitous presence of phthalates in the environment. In order to better determine the level of pollution in the environment and evaluate the potential adverse effects of exposure to DBP, immunoassay for DBP was developed. METHODOLOGY/PRINCIPAL FINDINGS A monoclonal antibody specific to DBP was produced from a stable hybridoma cell line generated by lymphocyte hybridoma technique. An indirect competitive enzyme-linked immunosorbent assay (icELISA) employing direct coating of hapten on polystyrene microtiter plates was established for the detection of DBP. Polystyrene surface was first oxidized by permanganate in dilute sulfuric acid to generate carboxyl groups. Then dibutyl 4-aminophthalate, which is an analogue of DBP, was covalently linked to the carboxyl groups of polystyrene surface with 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride (EDC). Compared with conjugate coated format (IC(50)=106 ng/mL), the direct hapten coated format (IC(50)=14.6 ng/mL) improved assay sensitivity after careful optimization of assay conditions. The average recovery of DBP from spiked water sample was 104.4% and the average coefficient of variation was 9.95%. Good agreement of the results obtained by the hapten coated icELISA and gas chromatography-mass spectrometry further confirmed the reliability and accuracy of the icELISA for the detection of DBP in certain plastic and cosmetic samples. CONCLUSIONS/SIGNIFICANCE The stable and efficient hybridoma cell line obtained is an unlimited source of sensitive and specific antibody to DBP. The hapten coated format is proposed as generally applicable because the carboxyl groups on modified microtiter plate surface enables stable immobilization of aminated or hydroxylated hapten with EDC. The developed hapten coated icELISA can be used as a convenient quantitative tool for the sensitive and accurate monitoring DBP in water, plastic and cosmetic samples.
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Cui Y, Nan T, Tan G, Li QX, Wang B, Liu S. Production of Monoclonal Antibody to Herbicide Fenoxaprop-ethyl. Hybridoma (Larchmt) 2011; 30:463-7. [DOI: 10.1089/hyb.2011.0054] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yongliang Cui
- College of Science, China Agricultural University, Beijing, People's Republic of China
| | - Tiegui Nan
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, People's Republic of China
| | - Guiyu Tan
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, People's Republic of China
| | - Qing X. Li
- Department of Molecular Biosciences and Bioengineering, University of Hawaii, Honolulu, Hawaii
| | - Baomin Wang
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, People's Republic of China
| | - Shangzhong Liu
- College of Science, China Agricultural University, Beijing, People's Republic of China
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Wang Y, Yang H, Wang B, Deng A. A sensitive and selective direct competitive enzyme-linked immunosorbent assay for fast detection of Sudan I in food samples. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2011; 91:1836-1842. [PMID: 21445880 DOI: 10.1002/jsfa.4392] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2010] [Revised: 11/03/2010] [Accepted: 11/22/2010] [Indexed: 05/30/2023]
Abstract
BACKGROUND Sudan I, a synthetic azo dye, is considered to be a genotoxic carcinogen and is prohibited in foodstuffs for any purpose at any level worldwide. In this study, a sensitive and specific direct competitive enzyme-linked immunosorbent assay (dc-ELISA) for fast detection of Sudan I in food samples was developed for the first time. The monoclonal antibody against Sudan I was used as capture protein, while horseradish peroxidase labeled Sudan I conjugate prepared by the periodate method via ovalbumin (OVA) as a bridge was used as enzyme tracer. RESULTS The standard curve of dc-ELISA for Sudan I was constructed in the range 0.1-100 ng mL⁻¹ and the assay time was within 80 min. Sensitivity was 2.6 ng mL⁻¹ and the limit of detection was 0.08 ng mL⁻¹. Cross-reactivity values of the assay with Sudan II, III and IV were 5.78%, 1.72% and 0.64%; no cross-reactivity was found with six other edible colorants. The assay was tolerated to 30% of methanol and 10% of acetonitrile without significant loss of IC₅₀. Recoveries of spiked Sudan I in five different samples including chilli powder, tomato sauce, hotpot seasoning and chilli sauce I and II were within 88.4-113.2% and the intra-assay relative standard deviation was less than 14%. The dc-ELISA was confirmed by conventional high-performance liquid chromatography and the correlation coefficient of the two methods was 0.9902. CONCLUSION The proposed dc-ELISA method provides an alternative method for sensitive, specific and fast determination of Sudan I in food samples.
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Affiliation(s)
- Yuzhen Wang
- College of Chemistry, Sichuan University, Chengdu 610064, China
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Zhang Y, Liu D, Diao J, He Z, Zhou Z, Wang P, Li X. Enantioselective environmental behavior of the chiral herbicide fenoxaprop-ethyl and its chiral metabolite fenoxaprop in soil. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2010; 58:12878-12884. [PMID: 21121654 DOI: 10.1021/jf103537a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The enantioselective degradation behavior of fenoxaprop-ethyl (FE) and its chiral metabolite fenoxaprop (FA) in three soils under native conditions was investigated. Two pairs of enantiomers were analyzed by high-performance liquid chromatography (HPLC) with an amylose tri-(3,5-dimethylphenylcarbamate) (ADMPC) chiral column. The degradation of racemic FE in three soils showed the herbicidally inactive S-(-)-enantiomer degraded faster than the active R-(+)-enantiomer. FE was configurationally stable in soils because no interconversion to the respective antipodes was observed during incubation of the enantiopure S-(-)- or R-(+)-FE. The main metabolites of FE were confirmed as FA and 6-chloro-2,3-dihydrobenzoxazol-2-one (CDHB), and the formation of the chiral metabolite FA showed enantioselectivity in soils. The degradation of rac-FA was also enantioselective with the S-(-)-FA preferentially degraded: the half-life (t(1/2)) of the S-form in the three soils ranged from 2.03 to 5.17 days, and that of R-form ranged from 2.42 to 20.39 days. The inversion of the S-(-)-enantiomer into the R-(+)-enantiomer occurred in two of the three soils when the enantiopure S-(-)- and R-(+)-FA were incubated. The data from sterilized control experiments indicated that the enantioselectivity of FE and FA was attributed to microbially mediated processes.
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Affiliation(s)
- Yanfeng Zhang
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
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Moon JK, Kim JH, Shibamoto T. Photodegradation pathways and mechanisms of the herbicide metamifop in a water/acetonitrile solution. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2010; 58:12357-12365. [PMID: 21067146 DOI: 10.1021/jf103762u] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The herbicide metamifop and related compounds were irradiated by UV (λ = 300 nm) for various time periods, and degradation products were analyzed by gas chromatography and gas chromatography-mass spectrometry to assess the fate of metamifop in the environment. Nearly 10% of metamifop degraded within 30 min of irradiation and >80% degraded after 4 h. Among the metabolites, N-(2-fluorophenyl)-2-hydroxy-N-methylpropionamide (HPFMA) formed at the highest level (50.8%), followed by N-methyl-2-fluoroaniline (NMFA, 8.5%), N-methyl-2-oxo-N-phenylpropionamide (MOPPA, 6.6%), N-(2-fluorophenyl)-2-(4-hydroxyphenoxy)-N-methylpropionamide (HPPFMA, 3.9%), and 4-(6-chlorobenzooxazol-2-yloxy)phenol (CBOP, 1.2%) after 4 h of irradiation. HPPFMA degraded further to yield HPFMA (32.5%). CBOP also degraded to give 6-chloro-3H-benzooxazol-2-one (CBO, 6.6%). It is proposed that homolytic fission of C-O bonds occurred at the early stage of photolysis and further reactions with a hydroxyl radical and/or a hydrogen radical formed various metabolites. Standards, which are not commercially available, were synthesized in the authors' laboratory.
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Affiliation(s)
- Joon-Kwan Moon
- Department of Environmental Toxicology, University of California, Davis, California 95616, United States
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Liu YH, Chen J, Wang CM, Guo YR, Liang X, Zhu GN. Specific antibody for pesticide residue determination produced by antibody-pesticide complex. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2010; 45:540-546. [PMID: 20603746 DOI: 10.1080/03601234.2010.493485] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
A new method for specific antibody production was developed using antibody (Ab)-pesticide complex as a unique immunogen. Parathion (PA) was the targeted pesticide, and rabbit polyclonal antibody (Pab) and mouse monoclonal antibody (Mab) were used as carrier proteins. The Ab-PA complexes were generated by conjugating the two antibodies with an excessive dosage of PA. It was shown that the sensitivity of homologous enzyme-linked immunosorbent assay (ELISA) using the new antibodies was similar to that using original antibodies. However, the new mouse Pab had not only similar positive recognizing spectrum as the original Mab, but also a significantly improved sensitivity in heterologous ELISA when some recognizable competitors were applied. IC(50) value of ELISA based on a combination of the new mouse Pab and hapten 9 was 0.24 ng/mL, which was 445.54 times as that of the homologous ELISA. An Ab-pesticide complex may be a suitable alternative immunogen for producing highly specific antibody to improve the immunoassay sensitivity.
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Affiliation(s)
- Yi H Liu
- Institute of Pesticide and Environmental Toxicology, Zhejiang University, Hangzhou, China
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Bao H, Fang S, Liu Z, Shi H, Ye Y, Wang M. Development of an enzyme-linked immunosorbent assay for the rapid detection of haloxyfop-P-methyl. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2010; 58:8167-70. [PMID: 20593822 DOI: 10.1021/jf101152m] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
An indirect competitive enzyme-linked immunosorbent assay (ic-ELISA) for the herbicide haloxyfop-P-methyl is reported. Two haptens of haloxyfop-P-methyl with different spacer-arm lengths were synthesized, to which polyclonal antibodies were obtained by immunizing New Zealand rabbits. The most sensitive combination of antibody/coating antigen was selected by homologous and heterologous assays. The results indicated that the spacer-arm length of hapten can affect assay sensitivity. The optimized ic-ELISA showed that the 50% inhibitory concentration (IC(50)) was 0.0419 mg/L, and the limit of detection (LOD) was 0.0019 mg/L. Recoveries were obtained from the agricultural samples, including water, soil, cucumbers, cabbages, tomatoes, and potatoes; all were in the range of 87.4%-111.8%, well within the requirements of residue detection.
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Affiliation(s)
- Huajun Bao
- Department of Pesticide Science, Nanjing Agricultural University, Nanjing, China
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Xu ZL, Shen YD, Beier RC, Yang JY, Lei HT, Wang H, Sun YM. Application of computer-assisted molecular modeling for immunoassay of low molecular weight food contaminants: A review. Anal Chim Acta 2009; 647:125-36. [DOI: 10.1016/j.aca.2009.06.003] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2009] [Revised: 05/30/2009] [Accepted: 06/02/2009] [Indexed: 10/20/2022]
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