INTERNATIONAL JOURNAL OF FOOD PROPERTIES
·
2020
·
IF 1.808
Di Hu,Mengmeng Jiang,Ting Ge,Xu Liu,Ziqi Li,Jinhong Liu,Ketong Zhu
A study of pesticide residues was investigated in vegetable samples to highlight the trend of drugs obtained from the Jilin Province, China. Total of 230 samples obtained from four regions over the period 2016–2017 were screened for 18 pesticides that were analyzed using gas chromatography with electron capture (GC-ECD). The results showed that 45 samples (19.6%) were positive including 17 samples (7.39%) exceeded the national maximum residue limit (MRL). Pesticides positive samples were detected in 32 leafy vegetables, 14 of which exceeded the MRLs (6.07%). There are 12 samples detected in celery that its detection rate was 5.22%, five of which exceeded the MRLs at the same time. In contrast, no pesticide residues were detected in beans or cauliflower. In the four types of pesticides, organophosphorus pesticides had the highest detection rate, which was 12.6% (29 samples). On the other hand, detectable residues of organochlorine pesticides were found, but it did not exceed the standard. Regional variations in pesticide occurrence were observed: fifteen, seven, and ten samples were positive from Ji’an, Siping City, and Tonghua City, respectively, six samples from the last city exceeded MRLs. There were 30 samples tested for pesticides at the farmers’ market and its detection rate was 13.04%, while only 15 samples contain pesticides that the samples (6.5%) purchased in the supermarket. The results indicated that high levels of the occurrence of pesticide residues in vegetables was an important source of exposure to pesticides. Therefore, we should pay attention to the consumers and their impact of pesticide residues on food and human health should be considered.
研究领域:
食品安全
·
环境科学
·
公共卫生
✓ 已验证
DOI
高影响因子
ACS Agricultural Science & Technology
·
2025
·
IF 2.9
Bin Sheng,Ying Zhang,Kexin Yang,Xiaobin Wen,Zhihao Lin,Zhijian Wu,Yaowei Zhang,Jie Zhou,Xueling Ye,Miao Wang,Ge Chen,Guangyang Liu,Xiaomin Xu,Xin Yang,Bining Jiao,Donghui Xu
Neonicotinoid insecticides face a number of challenges in improving the efficacy and mitigating resistance in Bemisia tabaci. The zeolitic imidazolate framework (ZIF) in metal–organic frameworks (MOFs) has attracted much attention in the field of nanopesticide preparation and controlled release due to its simple preparation. However, monometallic ZIFs have a simple structure and low loading capacity. To solve this problem, we doped Fe into ZIF-L and successfully synthesized a cross-stacked bimetallic ZIF nanocarrier, which can effectively load and release dinotefuran (DNF). Subsequent preparation of Zn-Fe-ZIF@DNF@MPN after encapsulation using metal–phenolic networks (MPNs) increased the DNF loading to 23.74% and achieved >99% release within 24 h. Zn-Fe-ZIF@DNF@MPN has greater resistance to UV light, retention on vegetable leaves, and resistance to rainwater washout. Dynamic residue analysis confirmed its effectiveness and persistence. In addition, it achieved 86.95% mortality against Bemisia tabaci without inhibiting cabbage seed germination. This work is of strategic importance for the development of a functional and environmentally friendly smart nanopesticide.
研究领域:
农药学
·
材料科学
·
昆虫毒理学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
FOOD CONTROL
·
2024
·
IF 5.6
Xiaoyu Li,Juan Zhang,Jiaci Chen,Xiangyi Pang,Longrui Yang,Yuhang Fan,Qingli Yang,Ailiang Chen
Organophosphorus pesticides (OPs) and carbamate pesticides (CBs) are the most commonly used pesticides in agricultural cultivation. The pesticide residues in plant products can easily enter dairy cows through feed, resulting in the pesticide low-concentration residues in milk. Traditional acetylcholinesterase (AChE) inhibition-based colorimetric methods have low sensitivity and could not satisfy the detection of low-concentrations of OPs and CBs residues in dairy products. In this study, we combined firefly luciferase (FLuc)-mediated bioluminescence with the inhibition of AChE-catalyzed substrate activity by pesticides to develop a highly sensitive and rapid method for detecting OPs and CBs residues in milk. AChE breaks down D-luciferin acetate to produce D-luciferin, which is recognized by the FLuc and emits luminescence in the presence of ATP. However, the presence of OPs and CBs inhibits AChE, causing the reduction or disappearance of the luminescence signal. The luminescence signal can be detected using a hand-held luminescence photometer, eliminating the need for large instrumentation. The AChE-FLuc system accurately detected OPs and CBs in milk within 30 min, with detection limits of 7.89 ng/mL and 1.75 ng/mL, respectively. The sensitivity of this method is approximately ten times higher than that of traditional AChE inhibition methods, meeting the pesticide residue limits in milk set by China and the European Union.
研究领域:
分析化学
·
食品科学
·
环境科学
✓ 已验证
DOI
高影响因子
Materials
·
2019
·Vol. 12
·期 9
·1507
·
IF 2.972
Jiarui Han,Jiaxin Shi,Zhining Xie,Jun Xu,Baohua Guo
A novel biobased and biodegradable polyester, i.e., poly(butylene succinate-co-butylene 2-methylsuccinate) (P(BS-BMS)) was synthesized by succinic acid (SA), 2-methylsuccinic acid (MSA), and 1,4-butanediol (BDO) via a typically two-step esterification and polycondensation procedure. The chemical structure and macromolecular weight of obtained copolymers were characterized by1H NMR,13C NMR, and GPC. The melting temperature and degree of crystallinity were also studied by DSC, and it was found that the values were gradually decreased with increasing of MSA content, while the thermal stability remained almost unchanged which was tested by TGA. In addition, the biodegradation rate of the P(BS-BMS) copolymers could be controlled by adjusting the ratio of SA and MSA, and such biodegradability could make P(BS-BMS) copolymers avoid microplastic pollution which may be brought to the environment for applications in agricultural field. When we applied P(BS-BMS) copolymers as pesticide carriers which were prepared by premix membrane emulsification (PME) method for controlling Avermectin delivery, an improvement of dispersion and utilization of active ingredient was obviously witnessed. It showed a burst release process first followed by a sustained release of Avermectin for a long period, which had a great potential to be an effective and environmental friendly pesticide-release vehicle.Keywords:biodegradable copolyesters;crystallinity;degradation property;pesticide-loaded microparticles;pesticide release
研究领域:
材料科学
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环境科学
·
农业科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES
·
2023
·
IF 3
Xin Wei,Liang Cao,Mingrui Zhou,Jiana Huang,Xiaoyan Liang,Nijie Li,Yanan Pan,Renli Yin,Huashou Li,Adela Jing Li
Emerging pesticides of neonicotinoids (NEOs) and “Universal Pesticides” (UPs) are a growing global concern due to their growing commercial importance and potential risks to human health. The currently available analytical methods for these pesticides in biomonitoring were usually tailored for limited number of analytes, or were time consuming and costly. In this study, an efficient and sensitive method for the analysis of 16 NEOs and nine UPs in human follicular fluid (FF) was developed by using a salting-out assisted liquid-liquid extraction (SALLE) method and liquid chromatography-tandem mass spectrometry (LC-MS/MS). Method performance was evaluated by calibration linearity ( r > 0.99), sensitivity at limits of quantification (0.01–0.50 ng/mL), accuracy at relative recoveries (81–117%) and precision at relative standard deviations (≤16%). The developed method was further validated by analyzing 21 human FF samples that were collected from a hospital in Guangzhou, China. Among the 25 study analytes, two NEOs and six UPs had their detection rates over 85% and medians at 0.048–0.808 ng/mL in the FF samples. Considering the well-known toxicity of these pesticides and their metabolites, it is urgent to figure out exposure profiles of study pesticides and potential reproductive risk for women. To the best of our knowledge, this study is the first to develop and apply the SALLE method in the extraction of 16 NEOs and nine UPs simultaneously in human FF.
研究领域:
环境科学
·
分析化学
·
生殖健康
✓ 已验证
DOI
PubMed
高影响因子
RSC Advances
·
2015
·Vol. 5
·期 123
·101879-101886
·
IF 3.84
Yan Xu,Tao Yu,Xiao-Qiong Wu,Jiang-Shan Shen,Hong-Wu Zhang
Developing rapid, efficient and highly sensitive sensing systems for organophosphorus (OPs) and organochlorine pesticides is important due to their potential damage to human health. Considering that Fe3+ ions were recently found to have much higher peroxidase-like activity than that of Fe3O4 magnetic nanoparticles, in this work, a novel and highly sensitive multi-catalytic sensing system has been successfully developed for OPs and organochlorine pesticides, on the basis of the color reaction of 3,3′,5,5′-tetramethyl benzidine (TMB) driven by Fe3+ ions, together with two enzymatic catalytic systems of acetylcholinesterase (AChE) and choline oxidase (CHO). Sub nM level limits of detection could be achieved for four tested OPs and organochlorine pesticides. Furthermore, several fruit/vegetable samples were successfully employed for evaluating this established sensing system.
研究领域:
生物化学
·
环境科学
✓ 已验证
DOI
高影响因子
TALANTA
·
2024
·
IF 5.6
Bin Wang,ShuangJiao Xu,Wenxuan Li,Yuwei Liu,Zhanwu Li,Lei Ma,Xia Xu,Di Chen
Pesticides used in agriculture have low polarity and a tendency to accumulate in fatty tissues, posing potential risks to human health. Effective pre-treatment is crucial due to complex sample matrices and low concentrations of pesticide residues typically encountered in instrument analysis. In this study, polyaniline-coated kapok fiber (PANI-KF) was synthesized successfully using in-situ oxidative polymerization for use as sorbents in in-syringe SPME of pyrethroid pesticides (PYRs) and organochlorine pesticides (OCPs) from aqueous samples. Coating the natural KF with PANI maintained the hollow microtubular structure and fiber morphology while significantly enhancing the extraction efficiency. The extraction process was easily conducted by simply pulling and pushing the syringe plunger. The entire extraction process, utilizing 3 mg of PANI-KF, could be completed in approximately 3 min. Density functional theory results indicated that the adsorption mechanism of PANI-KF towards OCPs and PYRs mainly involved van der Waals interactions , π-π interactions, and weak hydrogen bonding interactions. With the coupling of gas chromatography-mass spectrometry, a quantification method was established that exhibited good linearities (R 2 > 0.990), and relative recoveries (87.2–108.5 %). The limits of detection ranged from 0.4 to 2.0 ng mL −1 and the matrix effects were negligible (−12.3–16.4 %). The validated in-syringe SPME-GC-MS method was successfully applied to determine pesticide residues in fruit juices, oral liquids and herbal extract granules with satisfactory accuracy and precision. PANI-KF exhibits remarkable promise as a sorbent for the extraction and enrichment of pesticide residues in aqueous samples, thereby contributing to the advancement of pesticide residue determination methodologies.
研究领域:
分析化学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
TALANTA
·
2019
·
IF 4.916
Ankita Sinha,Yujin Huang,Huimin Zhao
The present work reports development of advanced nanosensor platform based on hierarchical 3D nanotubes assembled from MoS 2 mono layers (3D MoS 2 NTs) for rapid and selective screening of well known carbamate fungicide, diethofencarb . The assembly of ultrathin MoS 2 layers possessed mesopores and large specific surface area which enabled its potential implementation in electrode fabrication. Preparation of 3D MoS 2 NTs helped to avoid restacking and aggregation during its utilization as sensor material and manifested great sensing abilities towards electro-oxidation of diethofencarb. The LOD and LOQ for diethofencarb at 3D MoS 2 NTs/GCE were calculated as 0.32 ng μL −1 and 1.09 ng μL −1 in the concentration range of 1–55 ng μL −1 by square wave voltammetry (SWV) and further 0.63 ng μL −1 and 2.11 ng μL −1 in the concentration range of 1–35 ng μL −1 by differential pulse voltammetry (DPV). The developed 3D MoS 2 NTs nanosensor was successfully used to quantify diethofencarb in river water sample with satisfied recovery of 94.23%–105.46% justifying its analytical utility in pesticide screening. The study drives immense motivation towards sensing of hazardous pesticides using nanomaterials based advanced sensing devices for environmental monitoring.
研究领域:
材料科学
·
环境科学
·
分析化学
✓ 已验证
DOI
高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Yutong Huang,Yan Luo,Xiaoqing Zhang,Shanglin Li,Mei Liu
The accurate detection of carbamate pesticides popularly employed in agricultural products is critical for reducing the threat of resultant residues to human health. In this work, a regenerable nanofilm used for SERS substrate was constructed by interfacially confined self-assembly incorporating CdS nanowires (CdSNWs) and Ag nanoparticles (AgNPs). The constructed AgNPs-CdSNWs/Nanofilm could significantly enhance the Raman signals of three carbamate pesticides (metolcarb, carbaryl and aldicarb-sulfone). A broad detection linear ranged 0.001–100 mg/L was achieved. The detection limits (LOD) of metolcarb, carbaryl and aldicarb-sulfone reached 0.00081 mg/L, 0.00081 mg/L and 0.00072 mg/L with coefficients of determination of (R 2 ) of 0.992, 0.991 and 0.992, percent recovery ranged 86.5–104.9 %，88.2–105.1 % and 87.0–104.5 %, respectively, and relative standard deviation (RSD) values were all less than 4.0 %. Results showed that the user-friendly reproducible nanofilm could be employed as simple-to-establish SERS platform for rapid detection of carbamate pesticides in food.
研究领域:
分析化学
·
食品安全
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROCHIMICA ACTA
·
2016
·Vol. 183
·期 3
·1187-1194
·
IF 4.831
Yang Genggeng,He Zeying,Liu Xueke,Liu Chang,Zhan Jing,Liu Donghui,Wang Peng,Zhou Zhiqiang
Magnetic polymer nanospheres were prepared and used as adsorbents for the extraction of organochlorine and pyrethroid pesticides from water samples. The adsorbents were synthesized by miniemulsion polymerization of N-vinylimidazole and divinylbenzene and simultaneous encapsulation of oleic acid-coated Fe 3 O 4 nanoparticles. Following desorption with ethyl acetate, the target analytes β-hexachlorocyclohexane, δ-hexachlorocyclohexane, p,p’-DDE, heptachlor, trans-chlordan, cis-chlordan, bifenthrin, β-cypermethrin, δ-methrin, λ-cyhalothrin and esfenvalerate were determined by gas chromatography with electron capture detection. Desorption conditions, extraction times and sample volume were screened by Plackett-Burman design and optimized by Box-Behnken design. Under the optimum conditions, the organochlorines can be quantified in the 20 to 400 ng L −1 concentration range, and the pyrethroids in the 400 to 4000 ng L −1 concentration range. The recoveries of organochlorines and pyrethroids from spiked real water samples are between 77.6 and 97.3 %, with relative standard deviations between 0.9 and 10.0 %. The method for magnetic solid phase extraction described here is fast, simple and friendly to the environment.
Fe 3 O 4 nanoparticles coated with oleic acid (OA) were covered with a copolymer prepared from N-vinylimidazole (VI) and divinylbenzene (DB), and then used for magnetic solid phase extraction of organochlorine and pyrethroid pesticides. Recoveries from spiked water samples range from 77.6 to 97.3 %.
研究领域:
分析化学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2022
·Vol. 10
·期 36
·12966-12974
·
IF 8.067
Cheng Ye,Meng He,Zhengdong Zhu,Xiaoyi Shi,Maofeng Zhang,Zhiyong Bao,Youju Huang,Changlong Jiang,Jianhua Li,Yucheng Wu
The rapid identification and quantitative detection of organophosphorus pesticides on a portable device is of vital importance for food safety evaluation and human health protection. However, conventional strategies for realizing the reliable, portable and sensitive detection of target analytes are still challenging. Here, a novel dual-MOF-induced ZnO@Co3O4 heterostructure modified with AgNPs was designed and fabricated as a surface-enhanced Raman scattering (SERS) sensor for the sensitive identification and quantitative analysis of organophosphorus pesticides. The ZnO@Co3O4 heterojunction induced charge transfer enhancement in ZnO@Co3O4@Ag and achieved a 6.6-fold signal amplification compared to that of ZnO@Ag. The synergetic effect of the ZnO@Co3O4 heterostructure and the plasmonic AgNPs together with the molecular preconcentration of the porous structure enabled it to ultrasensitively detect triazophos (10−9 M), fonofos (10−8 M) and thiram (10−7 M) even on a portable Raman instrument. The SERS sensor exhibited superior signal reproducibility with an RSD value less than 8% and long-term stability with a signal loss of only 8.9% after 30 days. Moreover, this SERS platform provided the rapid quantitative analysis of triazophos, fonofos and thiram residues on real samples of tea and dendrobium leaves with LOD values of 10−7 M, 10−6 M and 10−6 M, respectively. In addition, the multiplex detection of pesticides was realized, indicating that our strategy has great potential for quantitative pesticide residue analysis in real samples.
研究领域:
食品安全
·
分析化学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2023
·
IF 8.8
Zhiyang Chen,Yue Sun,Jiyong Shi,Wen Zhang,Xinai Zhang,Xiaowei Hang,Zhihua Li,Xiaobo Zou
The goal of food safety supervision is to directly identify the pesticide residues on the surface of fruits and vegetables. This study proposed to develop a facile, non-destructive, and sensitive method based on surface-enhanced Raman scattering (SERS) to detect non-systemic pesticides on the surface of fruits and vegetables. The composite material was prepared by loading CTAB guided Au@Ag NRs with positive charge onto filter paper which was modified with PDADMAC(+) and PSS(−) using electrostatic adsorption. Au@Ag NRs with bimetallic synergies were effectively adsorbed in the fiber grid to generate 3D SERS hotspots within a few microns of depth. The results showed that the 3D composite flexible substrate had a high SERS activity, great repeatability, and sensitivity when the method was utilized to detect 4-MBA, methyl-parathion, thiram and chlorpyrifos. Three kinds of non-systemic pesticides on the peel could be detected directly and quickly owing to the arbitrary bending of the substrate, demonstrating the efficiency of the SERS “paste-reading” method. The acquired findings demonstrated that PDADMAC/PSS/Au@Ag NRs composite filter paper had the potential to provide rapid feedback for in- situ analysis of pesticide residues on the surface of fruit and vegetable.
研究领域:
食品安全
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）