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Chen H, Hong J, Huang H, Zhao D, Sun B, Sun J, Huang M, Sun X. Based on metabolomics, chemometrics, and modern separation omics: Identifying key in-pathway and out-pathway points for pesticide residues during solid-state fermentation of baijiu. Food Chem 2024; 451:138767. [PMID: 38663241 DOI: 10.1016/j.foodchem.2024.138767] [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: 09/19/2023] [Revised: 01/31/2024] [Accepted: 02/13/2024] [Indexed: 05/26/2024]
Abstract
By collecting real samples throughout the entire production process and employing chemometrics, metabolomics, and modern separation omic techniques, it unveiled the patterns of pesticide transfer during solid-state fermentation. The results indicated that 12 types of pesticide residues were prevalent during baijiu production, with organochlorine and carbamate pesticides being the most abundant in raw materials. After fermentation, organochlorine pesticides and pyrethroid pesticides exhibited higher content, while carbamate pesticides dominated in the final product. The pathways for pesticide input and elimination were identified, and the intricate mechanisms underlying these changes were further elucidated. Additionally, key control points were defined to facilitate targeted monitoring. The results indicated that pesticide residue primarily originates from raw materials and Daqu, whereas both solid-state fermentation and distillation processes were effective in reducing pesticide residues. The study offers valuable guidance for establishing pesticide residue standards in the context of baijiu production.
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Affiliation(s)
- Hao Chen
- China Food Flavor and Nutrition Health Innovation Center, Beijing Technology and Business University, Beijing 100048, China; Key Laboratory of Brewing Molecular Engineering of China Light Industry, Beijing Technology & Business University, Beijing 100048, China; Beijing Laboratory of Food Quality and Safety, Beijing Technology and Business University, Beijing 100048, China
| | - Jiaxin Hong
- China Food Flavor and Nutrition Health Innovation Center, Beijing Technology and Business University, Beijing 100048, China; Key Laboratory of Brewing Molecular Engineering of China Light Industry, Beijing Technology & Business University, Beijing 100048, China; Beijing Laboratory of Food Quality and Safety, Beijing Technology and Business University, Beijing 100048, China; Department of Nutrition and Health, China Agriculture University, Beijing 100048, China
| | - He Huang
- China Food Flavor and Nutrition Health Innovation Center, Beijing Technology and Business University, Beijing 100048, China; Key Laboratory of Brewing Molecular Engineering of China Light Industry, Beijing Technology & Business University, Beijing 100048, China; Beijing Laboratory of Food Quality and Safety, Beijing Technology and Business University, Beijing 100048, China
| | - Dongrui Zhao
- China Food Flavor and Nutrition Health Innovation Center, Beijing Technology and Business University, Beijing 100048, China; Key Laboratory of Brewing Molecular Engineering of China Light Industry, Beijing Technology & Business University, Beijing 100048, China; Beijing Laboratory of Food Quality and Safety, Beijing Technology and Business University, Beijing 100048, China.
| | - Baoguo Sun
- China Food Flavor and Nutrition Health Innovation Center, Beijing Technology and Business University, Beijing 100048, China; Key Laboratory of Brewing Molecular Engineering of China Light Industry, Beijing Technology & Business University, Beijing 100048, China; Beijing Laboratory of Food Quality and Safety, Beijing Technology and Business University, Beijing 100048, China.
| | - Jinyuan Sun
- China Food Flavor and Nutrition Health Innovation Center, Beijing Technology and Business University, Beijing 100048, China; Key Laboratory of Brewing Molecular Engineering of China Light Industry, Beijing Technology & Business University, Beijing 100048, China; Beijing Laboratory of Food Quality and Safety, Beijing Technology and Business University, Beijing 100048, China
| | - Mingquan Huang
- China Food Flavor and Nutrition Health Innovation Center, Beijing Technology and Business University, Beijing 100048, China; Key Laboratory of Brewing Molecular Engineering of China Light Industry, Beijing Technology & Business University, Beijing 100048, China; Beijing Laboratory of Food Quality and Safety, Beijing Technology and Business University, Beijing 100048, China
| | - Xiaotao Sun
- China Food Flavor and Nutrition Health Innovation Center, Beijing Technology and Business University, Beijing 100048, China; Key Laboratory of Brewing Molecular Engineering of China Light Industry, Beijing Technology & Business University, Beijing 100048, China; Beijing Laboratory of Food Quality and Safety, Beijing Technology and Business University, Beijing 100048, China
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2
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Ok J, Park S, Jung YH, Kim TI. Wearable and Implantable Cortisol-Sensing Electronics for Stress Monitoring. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2211595. [PMID: 36917076 DOI: 10.1002/adma.202211595] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 02/27/2023] [Indexed: 06/18/2023]
Abstract
Cortisol is a steroid hormone that is released from the body in response to stress. Although a moderate level of cortisol secretion can help the body maintain homeostasis, excessive secretion can cause various diseases, such as depression and anxiety. Conventional methods for cortisol measurement undergo procedures that limit continuous monitoring, typically collecting samples of bodily fluids, followed by separate analysis in a laboratory setting that takes several hours. Thus, recent studies demonstrate wearable, miniaturized sensors integrated with electronic modules that enable wireless real-time analysis. Here, the primary focus is on wearable and implantable electronic devices that continuously measure cortisol concentration. Diverse types of cortisol-sensing techniques, such as antibody-, DNA-aptamer-, and molecularly imprinted polymer-based sensors, as well as wearable and implantable devices that aim to continuously monitor cortisol in a minimally invasive fashion are discussed. In addition to the cortisol monitors that directly measure stress levels, other schemes that indirectly measure stress, such as electrophysiological signals and sweat are also summarized. Finally, the challenges and future directions in stress monitoring and management electronics are reviewed.
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Affiliation(s)
- Jehyung Ok
- School of Chemical Engineering, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea
| | - Sumin Park
- Department of Electronic Engineering, Hanyang University, Seoul, 04763, Republic of Korea
| | - Yei Hwan Jung
- Department of Electronic Engineering, Hanyang University, Seoul, 04763, Republic of Korea
| | - Tae-Il Kim
- School of Chemical Engineering, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea
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3
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The Preparation and Removal Performance of Carbamazepine/Oxcarbazepine Double Template Magnetic Molecularly Imprinted Polymers. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122556] [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]
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4
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Zheng X, Liu F, Shi M, Li S, Xie X, Li G, Zhang X, Zhu Y. Transcriptome analysis of the reproduction of silkworm (Bombyx mori) under dimethoate stress. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2022; 183:105081. [PMID: 35430071 DOI: 10.1016/j.pestbp.2022.105081] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 01/13/2022] [Accepted: 03/14/2022] [Indexed: 06/14/2023]
Abstract
Dimethoate (DMT) is an organophosphorus pesticide which is widely used to prevent and control agricultural diseases and pests. But it also remains in crops and the environment, affecting other non-target organisms. Existing research mainly focuses on aquatic invertebrates, and research on terrestrial invertebrates is still relatively weak. This study selected the lepidopteran model insect silkworm (Bombyx mori) as the research object and revealed the influence of DMT on the reproduction of silkworms. This study used digital gene expression (DGE) and RT-qPCR analysis to compare gene expression changes in eggs laid by silkworms under the exposure of DMT (200 mg/L). A total of 320 differential genes were detected, of which 211 genes were up-regulated and 109 genes were down-regulated. The GO enrichment analysis bar graph shows those differential genes enriched in the BP's metabolic process, cellular process, CC's membrane part, cell, MF's catalytic activity, binding. KEGG enrichment analysis showed more differential genes enriched in signal transduction, endocrine system, cancers: Overview pathway. The results showed that the differential genes were mainly concentrated on promoting trehalase transporter genes, stress response-related genes, zinc finger protein genes, epidermal protein genes, and 5-HT pathway-related genes. The results of this study will provide important gene sequence information for insect toxicology studies, and also clarify the mechanism of influence of DMT on silkworm reproduction at the transcription level.
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Affiliation(s)
- Xi Zheng
- State Key Laboratory of Silkworm Genome Biology, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing 400715, China
| | - Fengdan Liu
- State Key Laboratory of Silkworm Genome Biology, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing 400715, China
| | - Min Shi
- Chongqing Wanzhou NO1. Senior High School, Chongqing 404000, China
| | - Shuo Li
- Chongqing Sericulture Science and Technology Research Institute, Chongqing 400700, China
| | - Xiaofan Xie
- State Key Laboratory of Silkworm Genome Biology, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing 400715, China
| | - Guannan Li
- State Key Laboratory of Silkworm Genome Biology, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing 400715, China
| | - Xiaoning Zhang
- State Key Laboratory of Silkworm Genome Biology, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing 400715, China
| | - Yong Zhu
- State Key Laboratory of Silkworm Genome Biology, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing 400715, China.
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5
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Efficacy of quaternary ammonium groups based polyelectrolytes for the reduction of various pesticide formulations content from synthetic wastewater. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119325] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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6
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Ray J, Samanta SK, Tripathy T. Adsorption of toxic organophosphorus pesticides from aqueous medium using dextrin‐graft‐
poly
(2‐acrylamido‐2‐methyl propane sulfonic acid‐co‐acrylic acid) copolymer: Studies on equilibrium kinetics, isotherms, and thermodynamics of interactions. POLYM ENG SCI 2021. [DOI: 10.1002/pen.25805] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Jagabandhu Ray
- Postgraduate Division of Chemistry Midnapore College (Autonomous) Midnapore India
| | - Santu Kumar Samanta
- Postgraduate Division of Chemistry Midnapore College (Autonomous) Midnapore India
| | - Tridib Tripathy
- Postgraduate Division of Chemistry Midnapore College (Autonomous) Midnapore India
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Nicholls IA, Golker K, Olsson GD, Suriyanarayanan S, Wiklander JG. The Use of Computational Methods for the Development of Molecularly Imprinted Polymers. Polymers (Basel) 2021; 13:2841. [PMID: 34502881 PMCID: PMC8434026 DOI: 10.3390/polym13172841] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 08/16/2021] [Accepted: 08/19/2021] [Indexed: 12/29/2022] Open
Abstract
Recent years have witnessed a dramatic increase in the use of theoretical and computational approaches in the study and development of molecular imprinting systems. These tools are being used to either improve understanding of the mechanisms underlying the function of molecular imprinting systems or for the design of new systems. Here, we present an overview of the literature describing the application of theoretical and computational techniques to the different stages of the molecular imprinting process (pre-polymerization mixture, polymerization process and ligand-molecularly imprinted polymer rebinding), along with an analysis of trends within and the current status of this aspect of the molecular imprinting field.
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Affiliation(s)
- Ian A. Nicholls
- Bioorganic & Biophysical Chemistry Laboratory, Linnaeus University Centre for Biomaterials Chemistry, Department of Chemistry & Biomedical Sciences, Linnaeus University, SE-391 82 Kalmar, Sweden; (K.G.); (G.D.O.); (S.S.); (J.G.W.)
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Meftaul IM, Venkateswarlu K, Dharmarajan R, Annamalai P, Megharaj M. Sorption-desorption of dimethoate in urban soils and potential environmental impacts. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2020; 22:2256-2265. [PMID: 33052991 DOI: 10.1039/d0em00337a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The environmental fate and impact of dimethoate application in the urban environment were assessed in nine selected soils. The pseudo-second-order kinetics model described the kinetics of dimethoate sorption very well in the urban soils exhibiting two distinct phases, an initial partitioning into clay surfaces and soil organic matter, and eventual diffusion into soil micropores. Dimethoate sorption in the urban soils followed the Freundlich model with an R2 value of 0.94-0.99, suggesting a multi-layered sorption on the heterogeneous surfaces. Sorption of dimethoate in the soils was influenced by clay, silt, organic matter, carboxyl and alkyl groups, and Al and Fe oxides. The undecomposed or incompletely decomposed organic matter present in the soils greatly reduced the sorption and enhanced desorption. The calculated lower values for Freundlich constant (KF) indicate the high mobility of dimethoate in the selected soils. Also, the values of groundwater ubiquity score (GUS), leachability index (LIX), hysteresis index (HI), and coefficient of distribution (Kd) for dimethoate in the soils clearly suggest that the insecticide is prone to leaching out significantly from the soil surface to groundwater. Moreover, the surface runoff from impervious places in the urban environment can be considered as a direct source of groundwater contamination, thereby affecting the quality of potable water besides posing a threat to non-target organisms of ecological importance and food safety. Thus, the present novel study suggests that the application of dimethoate in the urban environment having impervious surfaces must be judicious in order to minimize the potential human and ecological health risks.
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Affiliation(s)
- Islam Md Meftaul
- Global Centre for Environmental Remediation (GCER), Faculty of Science, The University of Newcastle, ATC Building, University Drive, Callaghan, NSW 2308, Australia.
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Tümay Özer E, Osman B, Parlak B. An experimental design approach for the solid phase extraction of some organophosphorus pesticides from water samples with polymeric microbeads. Microchem J 2020. [DOI: 10.1016/j.microc.2019.104537] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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10
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Zheng F, Jiang H, Jia J, Wang R, Zhang Z, Xu H. Effect of dimethoate in controlling Monolepta hieroglyphica (Motschulsky) and its distribution in maize by drip irrigation. PEST MANAGEMENT SCIENCE 2020; 76:1523-1530. [PMID: 31686420 DOI: 10.1002/ps.5670] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 10/28/2019] [Accepted: 10/31/2019] [Indexed: 06/10/2023]
Abstract
BACKGROUND Monolepta hieroglyphica (Motschulsky) is a primary pest of maize. The effect of dimethoate on controlling a M. hieroglyphica infestation was studied using drip irrigation. Field trials were conducted to determine the most effective application rate and water volume for dimethoate treatment in arid and semi-arid regions. The absorption, distribution and dissipation of dimethoate in maize and soil were examined. RESULTS Field trials showed that dimethoate at a rate of 2.70 kg a.i. ha-1 and water volume of 200 m3 ha-1 was the most effective treatment for controlling M. hieroglyphica. Dimethoate via drip irrigation showed longer persistence than dimethoate applied via artificial or unmanned air vehicle spraying. Different parts of the maize plant had a hysteresis effect on dimethoate absorption. Dimethoate was absorbed from the roots, transported upward, and enriched in the leaf. Dimethoate was mainly concentrated within a certain range near the emitter after drip irrigation. Terminal residues of dimethoate in maize grain were below detectable levels 42 days after treatment. CONCLUSIONS Dimethoate treatment via drip irrigation can control M. hieroglyphica infestation on maize. Results showed that dimethoate is safe for maize and the environment. This study provides guidance for the application of pesticides in arid and semi-arid areas. © 2019 Society of Chemical Industry.
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Affiliation(s)
- Feng Zheng
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, Guangdong, China
- Key Laboratory of Natural Pesticide & Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou, China
| | - Hui Jiang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, Guangdong, China
- Key Laboratory of Natural Pesticide & Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou, China
| | - Jinliang Jia
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, Guangdong, China
- Key Laboratory of Natural Pesticide & Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou, China
| | - Ruifei Wang
- Key Laboratory of Natural Pesticide & Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou, China
| | - Zhixiang Zhang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, Guangdong, China
- Key Laboratory of Natural Pesticide & Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou, China
| | - Hanhong Xu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, Guangdong, China
- Key Laboratory of Natural Pesticide & Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou, China
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Sobiech M, Bujak P, Luliński P, Pron A. Semiconductor nanocrystal-polymer hybrid nanomaterials and their application in molecular imprinting. NANOSCALE 2019; 11:12030-12074. [PMID: 31204762 DOI: 10.1039/c9nr02585e] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Quantum dots (QDs) are attractive semiconductor fluorescent nanomaterials with remarkable optical and electrical properties. The broad absorption spectra and high stability of QD transducers are advantageous for sensing and bioimaging. Molecular imprinting is a technique for manufacturing synthetic polymeric materials with a high recognition ability towards a target analyte. The high selectivity of the molecularly imprinted polymers (MIPs) is a result of the fabrication process based on the template-tailored polymerization of functional monomers. The three-dimensional cavities formed in the polymer network can serve as the recognition elements of sensors because of their specificity and stability. Appending specific molecularly imprinted layers to QDs is a promising strategy to enhance the stability, sensitivity, and selective fluorescence response of the resulting sensors. By merging the benefits of MIPs and QDs, inventive optical sensors are constructed. In this review, the recent synthetic strategies used for the fabrication of QD nanocrystals emphasizing various approaches to effective functionalization in aqueous environments are discussed followed by a detailed presentation of current advances in QD conjugated MIPs (MIP-QDs). Frontiers in manufacturing of specific imprinted layers of these nanomaterials are presented and factors affecting the specific behaviour of an MIP shell are identified. Finally, current limitations of MIP-QDs are defined and prospects are outlined to amplify the capability of MIP-QDs in future sensing.
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Affiliation(s)
- Monika Sobiech
- Department of Organic Chemistry, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland
| | - Piotr Bujak
- Warsaw University of Technology, Faculty of Chemistry, Noakowskiego 3, 00-664 Warsaw, Poland.
| | - Piotr Luliński
- Department of Organic Chemistry, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland
| | - Adam Pron
- Warsaw University of Technology, Faculty of Chemistry, Noakowskiego 3, 00-664 Warsaw, Poland.
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13
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He C, Lay S, Yu H, Shen S. Synthesis and application of selective adsorbent for pirimicarb pesticides in aqueous media using allyl-β-cyclodextrin based binary functional monomers. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2018; 98:2089-2097. [PMID: 28941229 DOI: 10.1002/jsfa.8690] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2017] [Revised: 09/13/2017] [Accepted: 09/14/2017] [Indexed: 06/07/2023]
Abstract
BACKGROUND Binary functional monomers, allyl-β-cyclodextrin (allyl-β-CD) and methacrylic acid (MAA) or allyl-β-CD and acrylonitrile (AN), were exploited in a fabrication of molecularly imprinted polymers (MIPs) for selective recognition and large enrichment of pirimicarb from aqueous media. RESULTS Special attention was paid to the computational simulation of the imprinting molecular and functional monomers. The morphological characteristics of MIPs made of allyl-β-CD and MAA (M-MAA) were characterised by scanning electron microscopy. The effect of binding capacity of MAA-linked allyl-β-CD MIPs (M-MAA) demonstrated higher efficiency than that of AN-linked allyl-β-CD MIPs (M-AN) when tested in binding specificity. Finally, M-MAA was chosen to run through molecularly imprinted solid-phase extraction (MISPE) to analyse the spiked fresh leafy vegetables of pirimicarb. CONCLUSION The present proposed technique is a promising tool for the preparation of the receptors which could recognise pirimicarb pesticide in aqueous media. © 2017 Society of Chemical Industry.
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Affiliation(s)
- Chengzijing He
- Department of Food Science & Nutrition, Zhejiang University, Hangzhou, China
| | - Sovichea Lay
- Department of Food Science & Nutrition, Zhejiang University, Hangzhou, China
- Department of Agronomy, University of Heng Samrin Thbong Khmum, Thboung Khmum, Cambodia
| | - Haining Yu
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, China
| | - Shengrong Shen
- Department of Food Science & Nutrition, Zhejiang University, Hangzhou, China
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14
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He J, Zhou L, Yao Q, Liu B, Xu H, Huang J. Greenhouse and field-based studies on the distribution of dimethoate in cotton and its effect on Tetranychus urticae by drip irrigation. PEST MANAGEMENT SCIENCE 2018; 74:225-233. [PMID: 28834288 DOI: 10.1002/ps.4704] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Revised: 07/08/2017] [Accepted: 08/14/2017] [Indexed: 06/07/2023]
Abstract
BACKGROUND The two-spotted spider mite, Tetranychus urticae Koch is an important pest of cotton. We investigated the efficacy of dimethoate in controlling T. urticae by drip irrigation. Greenhouse and field experiments were carried out to determine the efficacy of dimethoate to T. urticae and the absorption and distribution of dimethoate in cotton. RESULTS Greenhouse results showed that cotton leaves received higher amounts of dimethoate compared with cotton roots and stems, with higher amounts in young leaves compared with old leaves and cotyledon having the lowest amounts among leaves. Field results showed the efficacy of dimethoate to T. urticae by drip irrigation varied by volume of dripping water, soil pH and dimethoate dosage. Dimethoate applied at 3.00 kg ha-1 with 200 m3 ha-1 water at weak acidic soil pH (5.70-6.70) through drip irrigation can obtain satisfactory control efficacy (81.49%, 7 days) to T. urticae, without negatively impacting on its natural enemy Neoseiulus cucumeris. The residue of dimethoate in all cotton seed samples were not detectable. CONCLUSIONS These results demonstrate the effectiveness of applying dimethoate by drip irrigation for control of T. urticae on cotton. This knowledge could aid in the applicability of dimethoate by drip irrigation for field management of T. urticae populations. © 2017 Society of Chemical Industry.
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Affiliation(s)
- Jiangtao He
- South China Agricultural University, Guangzhou, Guangdong, China
| | - Lijuan Zhou
- South China Agricultural University, Guangzhou, Guangdong, China
| | - Qiang Yao
- South China Agricultural University, Guangzhou, Guangdong, China
| | - Bo Liu
- South China Agricultural University, Guangzhou, Guangdong, China
| | - Hanhong Xu
- South China Agricultural University, Guangzhou, Guangdong, China
| | - Jiguang Huang
- South China Agricultural University, Guangzhou, Guangdong, China
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15
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Highly efficient recovery of biophenols onto graphene oxide nanosheets: Valorisation of a biomass. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.09.046] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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Garcia R, Gomes da Silva MDR, Cabrita MJ. "On-off" switchable tool for food sample preparation: merging molecularly imprinting technology with stimuli-responsive blocks. Current status, challenges and highlighted applications. Talanta 2017; 176:479-484. [PMID: 28917779 DOI: 10.1016/j.talanta.2017.07.082] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 07/26/2017] [Accepted: 07/27/2017] [Indexed: 12/28/2022]
Abstract
Sample preparation still remains a great challenge in the analytical workflow representing the most time-consuming and laborious step in analytical procedures. Ideally, sample pre-treatment procedures must be more selective, cheap, quick and environmental friendly. Molecular imprinting technology is a powerful tool in the development of highly selective sample preparation methodologies enabling to preconcentrate the analytes from a complex food matrix. Actually, the design and development of molecularly imprinted polymers-based functional materials that merge an enhancement of selectivity with a controllable and switchable mode of action by means of specific stimulus constitutes a hot research topic in the field of food analysis. Thus, combining the stimuli responsive mechanism and imprinting technology a new generation of materials are emerging. The application of these smart materials in sample preparation is in early stage of development, nevertheless new improvements will promote a new driven in the demanding field of food sample preparation. The new trends in the advancement of food sample preparation using these smart materials will be presented in this review and highlighted the most relevant applications in this particular area of knowledge.
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Affiliation(s)
- Raquel Garcia
- ICAAM - Instituto de Ciências Agrárias e Ambientais Mediterrânicas, IIFA, Universidade de Évora, Núcleo da Mitra, Ap. 94, 7006-554 Évora, Portugal; LAQV, REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal.
| | - Marco D R Gomes da Silva
- LAQV, REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - Maria João Cabrita
- Departamento de Fitotecnia, Escola de Ciências e Tecnologia, Universidade de Évora, Pólo da Mitra, Ap. 94, 7006-554 Évora, Portugal
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Specific Fluorescence Probe for Direct Recognition of Dimethoate Using Molecularly Imprinting Polymer on ZnO Quantum Dots. J Fluoresc 2017; 27:1339-1347. [DOI: 10.1007/s10895-017-2068-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Accepted: 03/02/2017] [Indexed: 11/26/2022]
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Kawahara Y, Ichiura H, Ohtani Y. Preparation of a temperature-responsive smart paper using a molecularly imprinted polymer and lipid bimolecular membrane. J Appl Polym Sci 2016. [DOI: 10.1002/app.44530] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yu Kawahara
- Faculty of Agriculture and Marine Science; Kochi University; 200 Monobe-Otsu Nankoku, Kochi 783-8502 Japan
| | - Hideaki Ichiura
- Faculty of Agriculture and Marine Science; Kochi University; 200 Monobe-Otsu Nankoku, Kochi 783-8502 Japan
| | - Yoshito Ohtani
- Faculty of Agriculture and Marine Science; Kochi University; 200 Monobe-Otsu Nankoku, Kochi 783-8502 Japan
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Lay S, Yu HN, Hu BX, Shen SR. Molecularly imprinted polymers as the extracted sorbents of clenbuterol ahead of liquid chromatographic determination. J Zhejiang Univ Sci B 2016; 17:465-75. [PMID: 27256680 DOI: 10.1631/jzus.b1500225] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A pre-treatment methodology for clenbuterol hydrochloride (CLEN) isolation and enrichment in a complex matrix environment was developed through exploiting molecularly imprinted polymers (MIPs). CLEN-imprinted polymers were synthesized by the combined use of ally-β-cyclodextrin (ally-β-CD) and methacrylic acid (MAA), allyl-β-CD and acrylonitrile (AN), and allyl-β-CD and methyl methacrylate (MMA) as the binary functional monomers. MAA-linked allyl-β-CD MIPs (M-MAA) were characterized by Fourier transform-infrared (FT-IR) spectroscopy and a scanning electron microscope (SEM). Based upon the results, M-MAA polymers generally proved to be an excellent selective extraction compared to its references: AN-linked allyl-β-CD MIPs (M-AN) and MMA-linked allyl-β-CD MIPs (M-MMA). M-MAA polymers were eventually chosen to run through a molecularly imprinted solid-phase extraction (MISPE) micro-column to enrich CLEN residues spiked in pig livers. A high recovery was achieved, ranging from 91.03% to 96.76% with relative standard deviation (RSD) ≤4.45%.
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Affiliation(s)
- Sovichea Lay
- Department of Food Science and Nutrition, Zhejiang University, Hangzhou 310058, China
| | - Hai-Ning Yu
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310032, China
| | - Bao-Xiang Hu
- Department of Chemical Engineering and Material Science, Zhejiang University of Technology, Hangzhou 310032, China
| | - Sheng-Rong Shen
- Department of Food Science and Nutrition, Zhejiang University, Hangzhou 310058, China
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Lazarević-Pašti TD, Pašti IA, Jokić B, Babić BM, Vasić VM. Heteroatom-doped mesoporous carbons as efficient adsorbents for removal of dimethoate and omethoate from water. RSC Adv 2016. [DOI: 10.1039/c6ra06736k] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
B-, N- and P-doped mesoporous carbons have been successfully applied for removal of dimethoate and omethoate from water.
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Affiliation(s)
| | - Igor A. Pašti
- University of Belgrade
- Faculty of Physical Chemistry
- 11158 Belgrade
- Serbia
| | - Bojan Jokić
- Faculty of Technology and Metallurgy
- University of Belgrade
- 11000 Belgrade
- Serbia
- Faculty of Applied Arts
| | - Biljana M. Babić
- Vinča Institute of Nuclear Sciences
- University of Belgrade
- 11001 Belgrade
- Serbia
| | - Vesna M. Vasić
- Vinča Institute of Nuclear Sciences
- University of Belgrade
- 11001 Belgrade
- Serbia
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Koetting MC, Peters JT, Steichen SD, Peppas NA. Stimulus-responsive hydrogels: Theory, modern advances, and applications. MATERIALS SCIENCE & ENGINEERING. R, REPORTS : A REVIEW JOURNAL 2015; 93:1-49. [PMID: 27134415 PMCID: PMC4847551 DOI: 10.1016/j.mser.2015.04.001] [Citation(s) in RCA: 543] [Impact Index Per Article: 60.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Over the past century, hydrogels have emerged as effective materials for an immense variety of applications. The unique network structure of hydrogels enables very high levels of hydrophilicity and biocompatibility, while at the same time exhibiting the soft physical properties associated with living tissue, making them ideal biomaterials. Stimulus-responsive hydrogels have been especially impactful, allowing for unprecedented levels of control over material properties in response to external cues. This enhanced control has enabled groundbreaking advances in healthcare, allowing for more effective treatment of a vast array of diseases and improved approaches for tissue engineering and wound healing. In this extensive review, we identify and discuss the multitude of response modalities that have been developed, including temperature, pH, chemical, light, electro, and shear-sensitive hydrogels. We discuss the theoretical analysis of hydrogel properties and the mechanisms used to create these responses, highlighting both the pioneering and most recent work in all of these fields. Finally, we review the many current and proposed applications of these hydrogels in medicine and industry.
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Affiliation(s)
- Michael C. Koetting
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, TX 78712, United States
- Institute for Biomaterials, Drug Delivery, and Regenerative Medicine, The University of Texas at Austin, Austin, TX 78712, United States
| | - Jonathan T. Peters
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, TX 78712, United States
- Institute for Biomaterials, Drug Delivery, and Regenerative Medicine, The University of Texas at Austin, Austin, TX 78712, United States
| | - Stephanie D. Steichen
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX 78712, United States
- Institute for Biomaterials, Drug Delivery, and Regenerative Medicine, The University of Texas at Austin, Austin, TX 78712, United States
| | - Nicholas A. Peppas
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, TX 78712, United States
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX 78712, United States
- College of Pharmacy, The University of Texas at Austin, Austin, TX 78712, United States
- Institute for Biomaterials, Drug Delivery, and Regenerative Medicine, The University of Texas at Austin, Austin, TX 78712, United States
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22
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Carbon dots: synthetic methods and applications as fluorescent probes for the detection of metal ions, inorganic anions and organic molecules. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2015. [DOI: 10.1007/s13738-015-0659-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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23
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Whitcombe MJ, Kirsch N, Nicholls IA. Molecular imprinting science and technology: a survey of the literature for the years 2004-2011. J Mol Recognit 2014; 27:297-401. [PMID: 24700625 DOI: 10.1002/jmr.2347] [Citation(s) in RCA: 275] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2013] [Revised: 10/28/2013] [Accepted: 12/01/2013] [Indexed: 12/11/2022]
Abstract
Herein, we present a survey of the literature covering the development of molecular imprinting science and technology over the years 2004-2011. In total, 3779 references to the original papers, reviews, edited volumes and monographs from this period are included, along with recently identified uncited materials from prior to 2004, which were omitted in the first instalment of this series covering the years 1930-2003. In the presentation of the assembled references, a section presenting reviews and monographs covering the area is followed by sections describing fundamental aspects of molecular imprinting including the development of novel polymer formats. Thereafter, literature describing efforts to apply these polymeric materials to a range of application areas is presented. Current trends and areas of rapid development are discussed.
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Du JJ, Gao RX, Yu H, Li XJ, Mu H. Selective extraction of dimethoate from cucumber samples by use of molecularly imprinted microspheres. J Pharm Anal 2014; 5:200-206. [PMID: 29403932 PMCID: PMC5762208 DOI: 10.1016/j.jpha.2014.10.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Revised: 10/10/2014] [Accepted: 10/13/2014] [Indexed: 11/26/2022] Open
Abstract
Molecularly imprinted polymers for dimethoate recognition were synthesized by the precipitation polymerization technique using methyl methacrylate (MMA) as the functional monomer and ethylene glycol dimethacrylate (EGDMA) as the cross-linker. The morphology, adsorption and recognition properties were investigated by scanning electron microscopy (SEM), static adsorption test, and competitive adsorption test. To obtain the best selectivity and binding performance, the synthesis and adsorption conditions of MIPs were optimized through single factor experiments. Under the optimized conditions, the resultant polymers exhibited uniform size, satisfactory binding capacity and significant selectivity. Furthermore, the imprinted polymers were successfully applied as a specific solid-phase extractants combined with high performance liquid chromatography (HPLC) for determination of dimethoate residues in the cucumber samples. The average recoveries of three spiked samples ranged from 78.5% to 87.9% with the relative standard deviations (RSDs) less than 4.4% and the limit of detection (LOD) obtained for dimethoate as low as 2.3 μg/mL.
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Affiliation(s)
- Jiao-Jiao Du
- Department of Chemistry, School of Science, Xi׳an Jiaotong University, No. 28 Xianning West Road, Xi׳an 710049,China
| | - Rui-Xia Gao
- Department of Chemistry, School of Science, Xi׳an Jiaotong University, No. 28 Xianning West Road, Xi׳an 710049,China
| | - Hu Yu
- Department of Chemistry, School of Science, Xi׳an Jiaotong University, No. 28 Xianning West Road, Xi׳an 710049,China
| | - Xiao-Jing Li
- Department of Chemistry, School of Science, Xi׳an Jiaotong University, No. 28 Xianning West Road, Xi׳an 710049,China
| | - Hui Mu
- Department of Chemistry, School of Science, Xi׳an Jiaotong University, No. 28 Xianning West Road, Xi׳an 710049,China
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25
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Qi P, Wang X, Wang X, Zhang H, Xu H, Jiang K, Wang Q. Computer-assisted design and synthesis of molecularly imprinted polymers for the simultaneous determination of six carbamate pesticides from environmental water. J Sep Sci 2014; 37:2955-65. [DOI: 10.1002/jssc.201400558] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2014] [Revised: 07/27/2014] [Accepted: 07/28/2014] [Indexed: 11/11/2022]
Affiliation(s)
- Peipei Qi
- Institute of Quality and Standard of Agro-products; Zhejiang Academy of Agricultural Sciences; Hangzhou P. R. China
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control; Hangzhou P. R. China
| | - Xiangyun Wang
- Institute of Quality and Standard of Agro-products; Zhejiang Academy of Agricultural Sciences; Hangzhou P. R. China
- Agricultural Ministry Key Laboratory for Pesticide Residue Detection; Hangzhou P. R. China
| | - Xinquan Wang
- Institute of Quality and Standard of Agro-products; Zhejiang Academy of Agricultural Sciences; Hangzhou P. R. China
- Key Laboratory of Detection for Pesticide Residues and Control of Zhejiang; Hangzhou P. R. China
| | - Hu Zhang
- Institute of Quality and Standard of Agro-products; Zhejiang Academy of Agricultural Sciences; Hangzhou P. R. China
- Key Laboratory of Detection for Pesticide Residues and Control of Zhejiang; Hangzhou P. R. China
| | - Hao Xu
- Institute of Quality and Standard of Agro-products; Zhejiang Academy of Agricultural Sciences; Hangzhou P. R. China
- Key Laboratory of Detection for Pesticide Residues and Control of Zhejiang; Hangzhou P. R. China
| | - Kezhi Jiang
- Key Laboratory of Organosilicon Chemistry and Material Technology; Hangzhou Normal University; Hangzhou P. R. China
| | - Qiang Wang
- Institute of Quality and Standard of Agro-products; Zhejiang Academy of Agricultural Sciences; Hangzhou P. R. China
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control; Hangzhou P. R. China
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26
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Simões M, Martins N, Cabrita MJ, Burke AJ, Garcia R. Tailor-made molecularly imprinted polymers for dimethoate and deltamethrin recognition: synthesis, characterization and chromatographic evaluation. JOURNAL OF POLYMER RESEARCH 2014. [DOI: 10.1007/s10965-014-0368-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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27
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Lv Y, Tan T, Svec F. Molecular imprinting of proteins in polymers attached to the surface of nanomaterials for selective recognition of biomacromolecules. Biotechnol Adv 2013; 31:1172-86. [DOI: 10.1016/j.biotechadv.2013.02.005] [Citation(s) in RCA: 180] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2012] [Revised: 02/21/2013] [Accepted: 02/23/2013] [Indexed: 10/27/2022]
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28
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Yi LX, Fang R, Chen GH. Molecularly Imprinted Solid-Phase Extraction in the Analysis of Agrochemicals. J Chromatogr Sci 2013; 51:608-18. [DOI: 10.1093/chromsci/bmt024] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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29
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Magnetic molecular imprint-based extraction of sulfonylurea herbicides and their determination by capillary liquid chromatography. Mikrochim Acta 2013. [DOI: 10.1007/s00604-013-0942-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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30
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Cao H, Xu F, Li DX, Zhang XG, Yu JS. Preparation and performance valuation of high selective molecularly imprinted polymers for malachite green. RESEARCH ON CHEMICAL INTERMEDIATES 2012. [DOI: 10.1007/s11164-012-0759-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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31
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Zeng H, Wang Y, Liu X, Kong J, Nie C. Preparation of molecular imprinted polymers using bi-functional monomer and bi-crosslinker for solid-phase extraction of rutin. Talanta 2012; 93:172-81. [DOI: 10.1016/j.talanta.2012.02.008] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2011] [Revised: 01/30/2012] [Accepted: 02/05/2012] [Indexed: 11/16/2022]
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32
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Zheng Q, Zhu Y, Xu J, Cheng Z, Li H, Li X. Fluoroalcohol and fluorinated-phenol derivatives functionalized mesoporous SBA-15 hybrids: high-performance gas sensing toward nerve agent. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c1jm14779j] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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33
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Stocka J, Tankiewicz M, Biziuk M, Namieśnik J. Green aspects of techniques for the determination of currently used pesticides in environmental samples. Int J Mol Sci 2011; 12:7785-805. [PMID: 22174632 PMCID: PMC3233438 DOI: 10.3390/ijms12117785] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2011] [Revised: 10/25/2011] [Accepted: 11/04/2011] [Indexed: 01/02/2023] Open
Abstract
Pesticides are among the most dangerous environmental pollutants because of their stability, mobility and long-term effects on living organisms. Their presence in the environment is a particular danger. It is therefore crucial to monitor pesticide residues using all available analytical methods. The analysis of environmental samples for the presence of pesticides is very difficult: the processes involved in sample preparation are labor-intensive and time-consuming. To date, it has been standard practice to use large quantities of organic solvents in the sample preparation process; but as these solvents are themselves hazardous, solvent-less and solvent-minimized techniques are becoming popular. The application of Green Chemistry principles to sample preparation is primarily leading to the miniaturization of procedures and the use of solvent-less techniques, and these are discussed in the paper.
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Affiliation(s)
- Jolanta Stocka
- Department of Analytical Chemistry, Chemical Faculty, Gdansk University of Technology, Narutowicza Street 11/12, Gdansk 80-233, Poland; E-Mails: (M.T.); (M.B.); (J.N.)
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34
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Levi L, Raim V, Srebnik S. A brief review of coarse-grained and other computational studies of molecularly imprinted polymers. J Mol Recognit 2011; 24:883-91. [DOI: 10.1002/jmr.1135] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Liora Levi
- Department of Chemical Engineering; Technion - Israel Institute of Technology; Haifa; Israel; 32000
| | - Vladimir Raim
- Department of Chemical Engineering; Technion - Israel Institute of Technology; Haifa; Israel; 32000
| | - Simcha Srebnik
- Department of Chemical Engineering; Technion - Israel Institute of Technology; Haifa; Israel; 32000
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35
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Guo Z, Zhang L, Song C, Zhang X. Molecularly imprinted solid-phase extraction of matrine from radix Sophorae tonkinensis. Analyst 2011; 136:3016-22. [PMID: 21655631 DOI: 10.1039/c1an15281e] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In the study, molecularly imprinted polymers (MIPs) with special molecular recognition properties of matrine (MAT) were prepared in our lab, using melamine-urea-formaldehyde (MUF) as the functional monomer and matrine as the template. An equilibrium binding experiment was performed to investigate the binding ability of the MIPs, and indicated that the MIPs had a high adsorption and good elution ability to the target molecule MAT, when the template/functional monomer ratio (T/M) was 5 mg g(-1). Scatchard analysis and isothermal equilibrium adsorption indicated that only one kind of binding site had existed in the MAT-imprinted polymers with its dissociation constants estimated to be 3.31 × 10(-4) mol L(-1) (200-400 mesh (inch(-1))) and 6.83 × 10(-4) mol L(-1) (over 400 mesh (inch(-1))) depending on the mesh of the MIPs. MAT purification and elution experiments were carried out using MIPs as the solid-phase extraction (MISPE) sorbent, and acetone, water, and chloroform as the elution solvents. The results demonstrated that MIPs achieved their highest adsorption capability after treatment with alkaline solution, while acetone was the most efficient elution solvent. Then, a crude extraction of matrine in radix Sophorae tonkinensis was performed using these MIPs as the separation medium. The results showed that MIPs had a high MAT selectivity, and the amount of matrine content obtained by MISPE was 1.4-fold to that obtained by liquid-liquid extraction.
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Affiliation(s)
- Zhifeng Guo
- Key Laboratory of Medical Chemistry and Molecular Diagnosis, College of Chemistry and Environmental Science, Hebei University, Baoding, 071002, China
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36
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Garcia R, Cabrita MJ, Costa Freitas AM. Application of Molecularly Imprinted Polymers for the Analysis of Pesticide Residues in Food—A Highly Selective and Innovative Approach. ACTA ACUST UNITED AC 2011. [DOI: 10.4236/ajac.2011.228119] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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37
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Chen J, Duan C, Guan Y. Sorptive extraction techniques in sample preparation for organophosphorus pesticides in complex matrices. J Chromatogr B Analyt Technol Biomed Life Sci 2010; 878:1216-25. [DOI: 10.1016/j.jchromb.2010.02.031] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2009] [Revised: 02/25/2010] [Accepted: 02/27/2010] [Indexed: 10/19/2022]
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39
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Zhao W, Ge PY, Xu JJ, Chen HY. Selective detection of hypertoxic organophosphates pesticides via PDMS composite based acetylcholinesterase-inhibition biosensor. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2009; 43:6724-6729. [PMID: 19764241 DOI: 10.1021/es900841n] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
We report on a pair of highly sensitive amperometric biosensors for organophosphate pesticides (OPs) based on assembling acetylcholinesterase (AChE) on poly(dimethylsiloxane) (PDMS)-poly(diallydimethylemmonium) (PDDA)/gold nanoparticles (AuNPs) composite film. Two AChE immobilization strategies are proposed based on the composite film with hydrophobic and hydrophilic surface tailored by oxygen plasma. The twin biosensors show interesting different electrochemical performances. The hydrophobic surface based PDMS-PDDAN AuNPs/choline oxidase (ChO)/AChE biosensor (biosensor-1) shows excellent stability and unique selectivity to hypertoxic organophosphate. At optimal conditions, this biosensor-1 could measure 5.0 x 10(-10) g/L paraoxon and 1.0 x 10(-9) g/L parathion. As for the hydrophilic surface based biosensor (biosensor-2), it shows no selectivity but can be commonly used for the detection of most OPs. Based on the structure of AChE, it is assumed that via the hydrophobic interaction between enzyme molecules and hydrophobic surface, the enzyme active sites surrounded by hydrophobic amino acids face toward the surface and get better protection from OPs. This assumption may explain the different performances of the twin biosensors and especially the unique selectivity of biosensor-1 to hypertoxic OPs. Real sample detection was performed and the omethoate residue on Cottomrose Hibiscus leaves was detected with biosensor-1.
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Affiliation(s)
- Wei Zhao
- Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
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40
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Dong C, Li X, Guo Z, Qi J. Development of a model for the rational design of molecular imprinted polymer: computational approach for combined molecular dynamics/quantum mechanics calculations. Anal Chim Acta 2009; 647:117-24. [PMID: 19576395 DOI: 10.1016/j.aca.2009.05.040] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2009] [Revised: 05/26/2009] [Accepted: 05/27/2009] [Indexed: 10/20/2022]
Abstract
A new rational approach for the preparation of molecularly imprinted polymer (MIP) based on the combination of molecular dynamics (MD) simulations and quantum mechanics (QM) calculations is described in this work. Before performing molecular modeling, a virtual library of functional monomers was created containing forty frequently used monomers. The MD simulations were first conducted to screen the top three monomers from virtual library in each porogen-acetonitrile, chloroform and carbon tetrachloride. QM simulations were then performed with an aim to select the optimum monomer and progen solvent in which the QM simulations were carried out; the monomers giving the highest binding energies were chosen as the candidate to prepare MIP in its corresponding solvent. The acetochlor, a widely used herbicide, was chosen as the target analyte. According to the theoretical calculation results, the MIP with acetochlor as template was prepared by emulsion polymerization method using N,N-methylene bisacrylamide (MBAAM) as functional monomer and divinylbenzene (DVB) as cross-linker in chloroform. The synthesized MIP was then tested by equilibrium-adsorption method, and the MIP demonstrated high removal efficiency to the acetochlor. Mulliken charge distribution and 1H NMR spectroscopy of the synthesized MIP provided insight on the nature of recognition during the imprinting process probing the governing interactions for selective binding site formation at a molecular level. We think the computer simulation method first proposed in this paper is a novel and reliable method for the design and synthesis of MIP.
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Affiliation(s)
- Cunku Dong
- Department of Chemistry, Harbin Institute of Technology, Harbin 150090, China
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41
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Haginaka J. Molecularly imprinted polymers as affinity-based separation media for sample preparation. J Sep Sci 2009; 32:1548-65. [DOI: 10.1002/jssc.200900085] [Citation(s) in RCA: 153] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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42
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Study of molecularly imprinted solid-phase extraction of diphenylguanidine and its structural analogs. Anal Chim Acta 2009; 639:42-50. [DOI: 10.1016/j.aca.2009.02.045] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2008] [Revised: 02/06/2009] [Accepted: 02/25/2009] [Indexed: 11/22/2022]
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43
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Gao B, Wang J, Yang Y. Studies of Imprinting Conditions and Application Performance of Pirimicarb Molecule-Imprinted Material Prepared Using a Novel Surface-Imprinting Technique. Chromatographia 2009. [DOI: 10.1365/s10337-009-1062-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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44
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Pichon V, Chapuis-Hugon F. Role of molecularly imprinted polymers for selective determination of environmental pollutants—A review. Anal Chim Acta 2008; 622:48-61. [DOI: 10.1016/j.aca.2008.05.057] [Citation(s) in RCA: 292] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2008] [Revised: 05/22/2008] [Accepted: 05/23/2008] [Indexed: 10/22/2022]
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45
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Tang K, Chen S, Gu X, Wang H, Dai J, Tang J. Preparation of molecularly imprinted solid phase extraction using bensulfuron-methyl imprinted polymer and clean-up for the sulfonylurea-herbicides in soybean. Anal Chim Acta 2008; 614:112-8. [PMID: 18405688 DOI: 10.1016/j.aca.2008.03.018] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2008] [Revised: 03/04/2008] [Accepted: 03/06/2008] [Indexed: 11/25/2022]
Abstract
A pre-treatment methodology based on the molecularly imprinted solid phase extraction (MI-SPE) procedure was developed for the determination of bensulfuron-methyl (BSM), tribenuron-methyl (TBM), metsulfuron-methyl (MSM) and nicosulfuron (NS) in soybean samples. A molecular imprinted polymer (MIP) was prepared by precipitation polymerization using BSM as the template molecule, alpha-methacrylic acid (MAA) as the functional monomer, trimethylolpropane trimethacrylate (TRIM) as the cross-linker and dichloromethane as the porogen. The binding behaviors of the template BSM and its analogues on the MIP were evaluated by high performance liquid chromatography (HPLC). Then, solid phase extraction (SPE) with a BSM molecularly imprinted polymer (BSM-MIP) as adsorbent was investigated and the optimum loading, washing, and eluting conditions for MI-SPE of the selected BSM, MSM, TBM, and NS were established. The optimized MI-SPE procedure was used to extract the sulfonylureas and a high recovery was obtained in the soybean samples.
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Affiliation(s)
- Kaijie Tang
- State Key Laboratory of Food Science & Technology, Jiangnan University, Jiangsu, Wuxi 214122, China.
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