JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
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2020
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IF 4.192
Shichao Xu,Xiaojing Zeng,Songlin Dai,Jing Wang,Yuxiang Chen,Jie Song,Yunfei Shi,Xian Cheng,Shengliang Liao,Zhendong Zhao
In this study, we will report on the synthesis and application of efficient botanical agrochemicals from turpentine for sustainable crop protection. Two series of turpentine derived secondary amines were synthesized and identified by FT-IR, 1H NMR, 13C NMR, and HRMS. The herbicidal activities against Echinochloa crus-galli were evaluated. The potential toxicity of the synthesized compounds was tested by MTT cytotoxicity analysis. The effect of structure of the synthesized secondary amines and corresponding Schiff base compounds on their activities was investigated by quantitative structure–activity relationship (QSAR) study. All target products were found to be low toxicity, with similar or higher herbicidal activities than commercial herbicides diuron and Glyphosate. Results of QSAR study showed that a best four-descriptor QSAR model with R2 of 0.880 and Rloo2 of 0.818 was obtained. The four descriptors most relevant to the herbicidal activities are the min valency of a N atom, the max total interaction for a C−H bond, the relative number of aromatic bonds, and the min partial charge (Qmin).
研究领域:
农业化学
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植物科学
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药学
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DOI
PubMed
高影响因子
PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY
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2024
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IF 4.2
Ke Xu,Xin-Ran Ke,Wan-Ting Zhang,Xin-Yuan Wu,Zhi-Jun Song,Mei-Juan Jiao,Xiao-Juan Gao,Li Zhou,Hong-Yan Ji,Fang Wang,Xiu-Li Wu
Imidacloprid (IMI) and diuron (DIU) are widely used pesticides in agricultural production. However, their excessive use and high residues have caused harm to the ecological environment and human health. Microbial remediation as an efficient and low-toxic method has become a research hotspot for controlling environmental pollutants. A fungus QHSH-33, identified as Simplicillium sp., has the ability to degrade neonicotinoids IMI and phenylurea DIU. When QHSH-33 and pesticide were co-cultured in liquid medium for 7 days, the degradation rates of IMI and DIU by QHSH-33 in simulated field soil microenvironment were 50.19 % and 70.57 %, respectively. Through HPLC-MS analysis, it was found that the degradation of IMI mainly involved nitro reduction, hydroxylation and other reactions. Three degradation pathways and eight degradation products were identified, among which two metabolites were obtained by microbial transformation of IMI for the first time. The degradation of DIU mainly involved demethylation and dehalogenation reactions, and two degradation pathways and four degradation products were identified, one of which was a new degradation product of DIU. Toxicity assessment demonstrated that most of the degradation products might be considerably less harmful than IMI and DIU. Whole genome sequencing of QHSH-33 revealed a genome size of 33.2 Mbp with 11,707 genes. The genome of QHSH-33 was annotated by KEGG to reveal 128 genes related to exogenous degradation and metabolism. After local blast with reported IMI and DIU degrading enzymes, seven IMI-degrading related genes and seven DIU-degrading related genes were identified in the QHSH-33 genome. The results of this study will help to expand our knowledge on the microbial decomposition metabolism of IMI and DIU, and provide new insights into the degradation mechanism of IMI and DIU in soil and pure culture system, laying a foundation for QHSH-33 strain applied to the removal, biotransformation or detoxification of IMI and DIU.
研究领域:
环境科学
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微生物学
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基因组学
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DOI
PubMed
高影响因子
Foods
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2025
·Vol. 14
·期 17
·2946
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IF 5.1
Lisi Wang,Xiaoqing Li,Yijing Ai,Brij Mohan,Hongji Li,Zhisong Lu,Baoli Wang,Wei Sun
The persistent presence of pesticide residues in vegetables raises significant concerns for food safety and public health, highlighting the need for sensing platforms that are efficient, affordable, and environmentally friendly while minimizing analysis time and reagent use. In this study, we developed a laser-induced graphene electrode (LIGE) modified with a titanium dioxide–Enteromorpha-derived carbon composite (TiO2@EDC) for the sensitive electrochemical detection of the herbicide diuron in vegetables. This integrated system streamlines material synthesis, electrode fabrication, and electrochemical analysis into a single, practical platform for food safety monitoring. Under optimized conditions, this sensor exhibited a wide linear detection range of 0.01 µM to 1 mM, with a low limit of detection of 2.99 nM (3 S/N) and a limit of quantification of 9.98 nM (10 S/N). Notably, the sensor demonstrated excellent analytical performance in real vegetable samples by accurately quantifying diuron residues in lettuce, indicating its potential for on-site monitoring of pesticide contamination in food matrices to ensure food safety.
研究领域:
环境科学
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材料科学
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分析化学
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食品安全
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电化学
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纳米技术
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF CHROMATOGRAPHY A
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2024
·
IF 3.8
Rui Shi,Yipeng Huang,Guihua Ruan,Zhengyi Chen,Yanqun Yang,Zhuqiang Wu
The distinctive morphology of dendritic mesoporous silica nanoparticles (DMSN) has recently attracted considerable attention in scientific community. However, synthesis of DMSN with well-defined structure and uniform size for ultrafast extraction of trace herbicide residues from environmental and food samples remains to be a compelling challenge. In this study, sulfhydryl functionalized dendritic mesoporous silica (SH-DMSN) was synthesized and the SH-DMSN showcases monodisperse microspheres with flower shape and precisely tailored and controllable pore sizes. This distinctive structural configuration accelerates mass transfer within the silica layer, resulting in heightened adsorption efficiencies. Furthermore, the particle sizes (455, 765, and 808) of the adsorbent can be meticulously fine-tuned by introducing distinct templates. Specifically, when the particle size is 765 nm, the optimized SH-DMSN exhibits a substantial specific surface area (691.32 m²/g), outstanding adsorption efficiencies (>90 %), remarkably swift adsorption and desorption kinetics (2 min and 3 min, respectively), and exceptional stability. The superior adsorption capabilities of this novel adsorbent, ranging from 481.65 to 1021.7 µg/g for organochlorine herbicides containing amide groups, can be attributed to the interplay of S-π interactions, halogen bonding, and electrostatic attraction interaction. These interactions involve the lone pair electrons of sulfhydryl and silanol groups with the π-electrons, halogen atoms and amide groups in herbicide molecules. This study not only offers a new perspective on advancing the practical utilization of dendritic mesoporous silica but also provides a pragmatic strategy for the separation and analysis of herbicides in diverse sample matrices.
研究领域:
材料科学
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环境科学
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分析化学
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2024
·
IF 13.3
Tianyao Shen,Yi Yang,Haihe Yu,Peng Wang,Peng Xu,Jianhua Qu,Guangshan Zhang
Coal is the primary energy and consumption accounts for a higher proportion of fossil fuels, but its combustion product (fly ash) is a hazardous industrial solid waste (ISW). To alleviate its environmental problem and reuse waste, an appropriate disposal method for fly ash was proposed, which is using fly ash to construct the ceramsite as a catalyst carrier. To improve the catalysis property of the composite, layer double oxides (LDO) was doped into the lightweight ceramsite (CoFe-LDO/FAC) with dielectric barrier discharge plasma (DBDP) catalysis activity. In addition, following the mindset of a “waste-to-waste” strategy, apply the composite ceramsite enhancing the diuron-containing (DUR) water purification in a DBDP self-Fenton-like system, creatively using one stone kills two birds. The porous structure endows the CoFe-LDO/FAC possessed water adsorption ability, assisting oxidants and contaminants diffusion with water inside CoFe-LDO/FAC. More than 95 % of DUR could be removed within 10 min, and the DBDP + CoFe-LDO/FAC performed the properties of stability as evidenced by low metal ion leaching in the eight times recycle. During the catalysis process, CoFe-LDO/FAC promotes the dominant reactive species ( 1 O 2 and • OH) yield by the valence cycle of Fe 2+ /Fe 3+ and Co 2+ /Co 3+ in DUR decomposition. Abundant oxygen vacancy remedies the electron consumption and maintains the surface charge balance. This work provides a novel application of fly ash and LDO in water treatment and is helpful in ISW disposal.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
ANALYTICA CHIMICA ACTA
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2025
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IF 6
Ting Wang,Yuan-Yuan Cui,Cheng-Xiong Yang
Background As a class of boomingly developed porous material, microporous organic networks (MONs) demonstrated great prospects in HPLC because of their unique structures and excellent stabilities. However, the agglomerated, irregular, and sub-micron sized MONs obtained via the traditional synthesis methods inevitably cause high column pressure and low column efficiency, rendering the main obstacles for their applications in HPLC. Monolithic column has the characteristics of continuous porous structure, fast mass transfer rate, excellent permeability, and low column pressure. Therefore, the integration of MONs with monolithic column should be a potential way to extend the widespread applications of MONs in HPLC. Results In this work, we reported the first example of fabricating MON incorporated monolithic columns by employing methacrylic acid as the monomer, ethylene dimethacrylate as the cross-linking agent, and polyethylene glycol-6000 as the porogen for the improved HPLC separation of small organic molecules. Effects of preparation conditions for MON incorporated monolithic column, sample loading mass, column temperature, and mobile phase composition were studied in detail. MON monolithic column after MON incorporation exhibits improved permeability, column efficiency, hydrophobicity, and specific surface area. Diverse small organic molecules such as polycyclic aromatic hydrocarbons, alkylbenzenes, acidic phenols, basic amines, phenylurea herbicides, parabens, phthalates, and flavonoids were successfully separated on MON incorporated monolithic column (50.0 mm length × 4.6 mm i.d.). MON incorporated monolithic column also provided better resolution and selectivity than C18 packed column. Significance This work reported the first combination of MON and monolithic column for efficient HPLC separation of variety small organic compounds with good resolution, selectivity, and precisions based on typical reversed phase mechanism. The experimental results demonstrated the great potential of MON incorporated monolithic column for enhanced HPLC separation of small organic compounds and could extend the new applications of MONs in separation science.
研究领域:
分析化学
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分离科学
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产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
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2024
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IF 8.5
Hui-Ping Yu,Qian-Qian Xu,Xin Wang,Yuan-Yuan Cui,He-Fang Wang,Cheng-Xiong Yang
In this work, a novel fluorinated magnetic microporous organic network (Fe 3 O 4 @FMON) was exquisitely designed and synthesized for highly efficient and selective magnetic solid phase extraction (MSPE) of fluorinated benzoylurea insecticides (BUs) from complex tea beverage samples. The Fe 3 O 4 @FMON exhibited good extraction for BUs via the pre-designed hydrophobic, π-π stacking, hydrogen bonding and specific F F interactions. A sensitive Fe 3 O 4 @FMON-based MSPE-HPLC-UV method with wide linear range (0.10–1000 μg L −1 , R 2 ≥ 0.996), low limits of detection (0.01–0.02 μg L −1 ), and large enrichment factors (85.6–98.0) for BUs from tea beverage samples was developed. By decorating F elements within MON's networks, the Fe 3 O 4 @FMON characterized good hydrophobicity and chemical stability, which could be reused at least 8 times without decrease of recoveries. This work demonstrated the great prospects of Fe 3 O 4 @FMON for enriching trace BUs from complex substrates and triggered the potential of FMON for sample pretreatment of fluorinated analytes.
研究领域:
分析化学
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环境科学
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材料科学
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食品科学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
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2024
·
IF 5.3
Wentao Zheng,Qihao Pu,Shiping Wang,Xinyue Hu,Xiankun Wu
A series of low-viscous deep eutectic solvents (DESs) with superbase as HBA and amide as HBD were designed and prepared for NO absorption. Impressively, both a comparably low viscosity of 8.07 mPa∙s and a high absorption capacity of 6.43 mol∙kg −1 (∼0.19 kg/kg) at 293.2 K were achieved, which was superior to that of other reported absorbents. Through a combination of absorption experiments, FT-IR characterization, and thermodynamic modelling, the results indicated that such a high solubility for NO was originated from the mutual promotion effect between the superbase and the amide. Considering that chemical absorption occurred accompanied with physical one, a reaction equilibrium thermodynamic model (RETM) equation was derived to correlate the experiment solubility data, so that the thermodynamic parameters were obtained to evaluate the absorption process. The absorption-desorption cycle experiment revealed that the regeneration efficiency of the superbase/amide DESs could be high up to 90 %. Given the low viscosity, high absorption capacity and excellent recycle efficiency, the superbase/amide DES was considered as a promising candidate for NO capture and utilization.
研究领域:
化学工程
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环境科学
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产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
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2024
·
IF 4.9
Cong Tian,Ning Zhu,Lu Qiao,Man He,Beibei Chen,Zhekuan Wu,Bin Hu
Herein, a new kind of magnetic covalent organic frameworks (MCOFs), named MCOF-DhaTab, using 1,3,5-tris (4-aminophenyl) benzene and 2,5-dihydroxy-1,4-phenylenedialdehyde as functional monomers of COFs and Fe 3 O 4 -NH 2 nanoparticles as magnetic carrier was synthesized at room temperature through Schiff base reaction. With a large specific surface area (409.5 m 2 /g) and rich in benzene rings and hydroxyl groups , the prepared MCOF-DhaTab exhibited high extraction efficiency (73.8 %–88.9 %) for five carbamate pesticides (CPs). Based on it, a new method of magnetic solid phase extraction (MSPE) with MCOF-DhaTab as the sorbents coupling to high performance liquid chromatography (HPLC) − ultraviolet visible (UV) detection was developed for trace analysis of carbaryl (CAR), fenobucarb (FEN), isoprocarb (ISO), diuron (DIU), mercaptodimethur (MER). The developed method had the advantages of low limits of detection (0.1–200 μg/L for CAR, 0.2–100 μg/L for ISO, 0.2–200 μg/L for DIU, and 0.5–200 μg/L for FEN and MER), high sensitivity, simplicity and rapidity. It was successfully used for the analysis of trace CPs in tomato, cucumber and cigar samples, showing a great application potential in pesticide residues analysis in agricultural samples.
研究领域:
分析化学
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环境科学
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农业科学
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
·
IF 8.1
Haiyan Wang,Peizeng Yang,Yiqian Song,Deyang Kong,Junhe Lu
UV-based treatment technologies have been widely applied in wastewater treatment plants due to its high efficiency in deactivating pathogens and degrading organic contaminants. However, this study demonstrates that N -nitrosodimethylamine (NDMA), a probable human carcinogen, can be generated during UV treatment of dimethylamine (DMA) pollutants of concern, for example isoproturon (IPU), in the presence of nitrite (NO 2 – ). Quenching tests have identified that in addition to direct photolysis, hydroxyl radicals (HO • ) and nitrogen oxide radicals (NO • and NO 2 • ) generated from NO 2 – photolysis play a crucial role in the reaction. They can react with IPU, leading to hydroxylated and nitrated products. More importantly, NO 2 • couples with a NO • or another NO 2 • to form N 2 O 3 and N 2 O 4 , respectively. As nitrosating agents, N 2 O 3 and N 2 O 4 directly attack the released DMA during IPU degradation, yielding NDMA. At IPU initial concentration of 50 μM, the highest concentration of NDMA was 5.62 μg/L in 2.5 h by UV/NO 2 – , corresponding to the molar yield of 0.22%. This study further reveals that other dimethylamine compounds, such as diuron, imipramine, and tetracyclines, can also serve as NDMA precursors during UV disinfection with NO 2 – present. Given that many environmental contaminants contain DMA moieties and NO 2 – is ubiquitously present in wastewaters, formation of NDMA during UV disinfection is probably a common but overlooked problem, which deserves emerging concern.
研究领域:
环境科学
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水处理
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化学工程
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毒理学
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产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Guangping Xia,Yipeng Huang,Shi Yu,Bingmei Lai,Zhenyu Li,Guihua Ruan
The escalating use of herbicides containing chlorophenyl and acylamino (HCAs) in agriculture has intensified concerns regarding their environmental impact, underscoring the need for efficient and eco-friendly methods for their extraction and detection. This study introduces the synthesis of a novel N/S rich covalent organic framework (COF), DFT-TPB-COF, using 2,5-diformylthiophene and 1,3,5-tri(4-aminophenyl) benzene as building blocks. The as-synthesized COF is uniform, spherical and monodisperse, making it an ideal candidate as packed materials in solid-phase extraction column for HCAs extraction from complex environmental samples. The DFT-TPB-COFs show adsorption capabilities ranging from 2.52 to 30.34 mg g −1 for six HCAs, facilitated by π-π interactions, p-π interactions, hydrogen bonding, electrostatic interactions, and hydrophobic interactions. The adsorption–desorption process is rapid (10 min). Additionally, the presence of other types of herbicides showed little interference in the adsorption efficiency of DFT-TPB-COF for HCAs. A sensitive and reliable method combining the DFT-TPB-COFs-filled SPE column with HPLC-UV was developed for detection of six HCAs in various environmental water and soil samples. The method exhibited excellent linearity (1–200.0 ng mL −1 ) and low limits of detection (0.3–0.9 ng mL −1 ) for HCAs. This study not only demonstrates the potential of DFT-TPB-COFs as a suitable packed material in solid-phase extraction column, but also opens avenues for the practical application of COFs in the adsorption of organic pollutants.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-13
·
IF 14.7
Hong Yechun,Yu Zongjun,Zhou Qian,Chen Chunyu,Hao Yuqiong,Wang Zhen,Zhu Jian-Kang,Guo Hongwei,Huang Ancheng C.
Nicotinamide adenine dinucleotide (NAD + ) is a redox cofactor and signal central to cell metabolisms. Disrupting NAD homeostasis in plant alters growth and stress resistance, yet the underlying mechanisms remain largely unknown. Here, by combining genetics with multi-omics, we discover that NAD + deficiency in qs-2 caused by mutation in NAD + biosynthesis gene- Quinolinate Synthase retards growth but induces biosynthesis of defense compounds, notably aliphatic glucosinolates that confer insect resistance. The elevated defense in qs-2 is resulted from activated jasmonate biosynthesis, critically hydroperoxidation of α-linolenic acid by the 13-lipoxygenase (namely LOX2), which is escalated via the burst of chloroplastic ROS-singlet oxygen ( 1 O 2 ). The NAD + deficiency-mediated JA induction and defense priming sequence in plants is recapitulated upon insect infestation, suggesting such defense mechanism operates in plant stress response. Hence, NAD homeostasis is a pivotal metabolic checkpoint that may be manipulated to navigate plant growth and defense metabolism for stress acclimation.
研究领域:
植物学
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遗传学
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代谢组学
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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）