RUSSIAN JOURNAL OF GENERAL CHEMISTRY
·
2025
·Vol. 95
·期 3
·644-653
·
IF 0.8
Wang J.,Zhou Y.,Wu X.,Zhou X.,Sun Y.,Wu W.,Wang X.
Discovering super-efficient herbicides with novel structures is one of the effective ways to solve the increasingly severe weed resistance problem and meet ecological requirements. In this work, a series of novel bromo- p -hydroxybenzamides were designed based on the molecular hybridization strategy, and rapidly synthesized by one-step amidation reaction, and then characterized by 1 H NMR, 13 C NMR and HRMS. The herbicidal activity assay indicated that most of the target compounds exhibited good-to-excellent inhibition effects on seed germination of two model plants. At a concentration of 100 mg/L, the inhibition rate of 3,5-dibromo- N -(4-bromo-3-chlorophenyl)- p -hydroxybenzamide reached up to 98 and 96% on the roots and stalks of the monocotyledonous barnyard grass ( E. crus-galli ), respectively. 3,5-Dibromo- N -(2-bromophenyl)- p -hydroxybenzamide showed excellent inhibitory activity on the roots and stalks of dicotyledonous rape ( B. napus ) at 100 mg/L, with an inhibitory rate of more than 90%. Furthermore, the concentration was reduced to 1 mg/L, the inhibitory rate of 3,5-dibromo- N -(2-bromophenyl)- p -hydroxybenzamide on the roots of B. napus was still as high as 90%. This work provides a novel molecular scaffold for the development and research of new super-efficient herbicides.
研究领域:
农药化学
·
植物生理学
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DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2024
·
IF 8
Zhenping Li,Hao Xu,Yukun Du,Zhongyu Huang,Jing Li,Lian Liu,Ying Dong,Xiao-Yu Yang
Gamma-hydroxybutyric acid (GHB), which is used in drug-facilitated sexual assault, is typically delivered in the form of gamma-butyrolactone (GBL) in beverage carriers. In response to the growing need of methods for rapid and on-site sensing of the drugs, we carried out an investigation aimed at developing a superwettable microchip for visual detection of the date-rape drug GBL in adulterated beverages. The superwettable microchip is comprised of Fe 3 O 4 nanoparticles which aggregate to form a reactive spot on a superhydrophobic fabric. The spot captures and confines microdroplets containing GBL on the superhydrophobic substrate. Fe(III), generated by HCl promoted reaction of the Fe 3 O 4 spot, then participates in a colorimetric reaction with GBL to form a naked eye observable colored complex. Quantitative determination of GBL in beverages is achieved by analyzing the red proportion of a smartphone camera derived image. The detection range of this assay protocol is ca. 0.1–10 mg mL −1 , which meets the requirements to detect potentially dangerous concentration of GBL in drinks. The detection stability of the superwettable microchip for GBL in water and common beverages is maintained over at least 30 cycles.
研究领域:
分析化学
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法医学
·
材料科学
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产品关联
DOI
高影响因子
SEED SCIENCE AND TECHNOLOGY
·
2012
·Vol. 40
·期 3
·396-403
·
IF 0.62
Tian Y.X.,Guan Y.J.,Hu J.,Wang Q.T.,Hu Q.J.,Zhu S.J.
Five fluorescent dyes – rhodamine B (RB), rhodamine 6G (R6G), lissamine rhodamine B (LRB), 3, 6-diamincacridine hulmisulfate (DH) and safranine T (ST) – were used to label seeds as an anti-counterfeiting technology. The effects of the d yes on physiological parameters of
rape and the patterns of fluorescence of rape seedlings were investigated. The results showed that s oaking seeds for 24 hours in 0.1 mg RB ml−1, 0.1 mg LRB ml−1 or 0.1 mg ST ml−1 had no significant effects on seed germination, seedling growth,
seedling protective enzyme activities or chlorophyll content. RB and LRB emitted bright red and bright orange fluorescence under a fluorescence microscope, when excited by green light (546 nm) and blue light (495 nm), respectively, whereas ST showed little difference compared with the control.
Moreover, the vascular bundles of stem, seedling roots and aerial parts of seedlings treated with RB all emitted brilliant fluorescence for a long time, which could be used as a marker in seedlings. Our results suggest that labelling rape seeds with RB dye at a suitable concentration can be
used as an anti-counterfeiting technique.
研究领域:
植物学
·
农业科学
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DOI
高影响因子
Processes
·
2024
·Vol. 12
·期 8
·1596
·
IF 2.8
Lei Hu,Lin Shi,Edwin Hena Dawolo,Ning Ding,Hong Liu
A cobalt-loaded magnetic biochar (Co-MBC) catalyst was synthesized to enhance the removal of metronidazole (MNZ). Study explored the performance and mechanism of MNZ degradation by Co-MBC activated permonosulfate (PMS). Results showed that cobalt oxides were effectively deposited onto the biochar surface, new oxygen functional groups were added to the modified biochar, and the presence of the metallic element Co enhanced the efficiency of PMS activation in the composite. More than 90% of MNZ was removed after 60 min with a catalyst dosage of 0.2 g/L and a PS concentration of 1 mM. After four reuses, Co-MBC still showed excellent catalytic performance to degrade over 75% of MNZ. The reaction system performed well even in the presence of inorganic anions and organic macromolecules. However, the degradation rate was inhibited under alkaline conditions. The quenching experiment indicated that •SO4−, •OH,1O2, and •O2−synergistically degraded MNZ, and that•SO4−played a dominant role. LC-MS was applied to assess intermediate degradation products, in which CO2, H2O, and NO3−were the final degradation products, and potential degradation pathways were suggested. In conclusion, Co-MBC was an efficient and stable catalytic material, and its ability to activate PMS was improved to effectively degrade antibiotics, a typical priority pollutant.
研究领域:
环境科学
·
污染治理
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DOI
高影响因子
NANOTECHNOLOGY
·
2023
·Vol. 34
·期 46
·465501
·
IF 3.5
Xiucai Wang,Naijian Hu,Jia Yang,Rongkui Lin,Jianwen Chen,Xinmei Yu,Wenbo Zhu,Minggao Zhang,Ting Wang
Green energy from the surrounding environment has great potential for reducing environmental pollution and sustainable development. Triboelectric nanogenerators (TENGs) are of great interest as they can easily harvest mechanical energy from the environment. Here, we present a triboelectric nanogenerator (RS-TENG) based on rape straw (RS), which was developed from a film composed of waste RS and polyvinyl alcohol (PVA). Due to the high content of carbonyl, hydroxyl and amino acid functional groups in RS, the ability of RS/PVA to lose electrons is increased. The proposed RS-TENG device with a size of 6.25 cm2 exhibits open circuit voltage (78 V), short circuit current (5.3 μA) performance under uniform external stress at a frequency of 3.5 Hz and 10 N in the cylinder motor. 104.5 μW was obtained with a load resistance of 25 MΩ. Results obtained from degradability tests revealed that the RS/PVA film was able to degrade over a period of 30 d (In PBS solution). The RS-TENG produces a significantly high current signal under conditions of finger bending, elbow movements, and foot tapping. Practical tests of the RS-TENG have shown that it is a promising sensing device that will be widely used in the future.
研究领域:
材料科学
·
环境科学
·
生物医学工程
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DOI
高影响因子
Water
·
2025
·Vol. 18
·期 1
·18
·
IF 3
Qiang Chen,Yi Ding,Zhicheng Xu,Haibin Zhou,Ruoyu Zhang,Jiao Chen,Yixin Lu,Wenlai Xu
Low reactivation efficiency of idle anaerobic ammonia oxidation (anammox) sludge hinders its reapplication. To address this issue, rape straw biochar (RSB) was added in the reactivation process of idle anammox sludge, and its effects on the nitrogen transformation and sludge characteristics were investigated, and the mechanism of RSB to enhance the reactivation performance was explored. Results indicated that adding 5 g/L RSB for 35 days successfully reactivated anammox sludge that had been idle for 270 days. The reactivation time was reduced by 34% compared to the control without RSB. During the stable operation period, the average TN removal efficiency reached 90.6%, and the sludge exhibited higher activity. After completion of reactivation, the specific surface area, total pore volume, and average pore diameter of RSB decreased by 59.4%, 66.9%, and 55.2%, respectively, compared with that before reactivation, and the carbon–oxygen functional groups also changed. RSB not only provided a habitat for the enriched growth of nitrogen transforming functional flora but also possessed the potential to supply sufficient electron donors and acceptors for the nitrogen transforming process, which promoted the synergistic removal of nitrate by denitrification, resulting in an effective enhancement of reactivation efficiency and nitrogen removal performance. The addition of RSB provides a novel strategy to enhance the reactivation efficiency of idle anammox sludge, which is of positive significance in promoting its efficient reuse and stable operation.
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DOI
高影响因子
INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY
·
2025
·
IF 3.7
Fuqiang Rao,Jie Yang,Danhao Peng,Xinghao Li,Zhaoqun Li,Deguang Liu
Herbivorous insects rely on olfactory cues to select oviposition sites on host plants, which is a process critical for their reproductive success. The rape stem weevil, Ceutorhynchus asper Roel. (Coleoptera: Curculionidae), is a major pest that causes significant damage to rapeseed and other cruciferous crop production, yet the chemical and molecular mechanisms underlying its oviposition preference remain unknown. Our behavioral assays revealed that C. asper females strongly avoided pre-infested rapeseed plants. Five monoterpenes (p-cymene, 1,8-cineole, ocimene, camphor, and α-pinene) were identified as herbivore-induced plant volatiles of C. asper -infested plants, with their emission levels significantly higher than those in healthy plants. Among these five compounds, subsequent electroantennogram (EAG) screening revealed that only 1,8-cineole triggered significant responses in C. asper and showed a concentration-dependent sensitivity. Behavioral assays showed that female C. asper exhibited significant behavioral and oviposition avoidance when exposed to 1,8-cineole. We identified CaspOR39 as the specific odorant receptor for 1,8-cineole, with molecular docking for prediction of the binding affinity and key residues. RNAi of CaspOR39 abolished female EAG responses, as well as behavioral and oviposition avoidance of 1,8-cineole. These results revealed a sex-specific chemical sensing mechanism: female C. asper can utilize CaspOR39 to detect 1,8-cineole as a key cue of plant infestation, driving adaptive oviposition behaviors of this beetle. Our results provide mechanistic and molecular insights into CaspOR39-mediated oviposition behaviors of C. asper , and a basis for the development of semiochemical-based strategies for management of this weevil.
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES
·
2015
·
IF 2.729
Shuangqin Ma,Xijuan Tu,Jiangtao Dong,Peng Long,Wenchao Yang,Xiaoqing Miao,Wenbin Chen,Zhenhong Wu
Soxhlet-assisted matrix solid phase dispersion (SA-MSPD) method was developed to extract flavonoids from rape ( Brassica campestris ) bee pollen. Extraction parameters including the extraction solvent, the extraction time, and the solid support conditions were investigated and optimized. The best extraction yields were obtained using ethanol as the extraction solvent, silica gel as the solid support with 1:2 samples to solid support ratio, and the extraction time of one hour. Comparing with the conventional solvent extraction and Soxhlet method, our results show that SA-MSPD method is a more effective technique with clean-up ability. In the test of six different samples of rape bee pollen, the extracted content of flavonoids was close to 10 mg/g. The present work provided a simple and effective method for extracting flavonoids from rape bee pollen, and it could be applied in the studies of other kinds of bee pollen.
研究领域:
植物化学
·
食品科学
·
分析化学
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产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Rao Qin,Yuhan Jing,Tianqi Wan,Guangliang Lu,Dabiao Zhai,Xingyu Li,Feng Zhang,Jiangang Jiang,Dan Zhang,Ping Zhang,Yiping Wang,Yong Wang,He Wang
A composite consisting of upconversion nanoparticles (UCNPs) and methylene blue (MB)-loaded zeolitic imidazolate framework-8 (ZIF-8), referred to as UCNP@ZIF-8@MB, was synthesized via a simple hydrothermal and one-pot approach for the targeted control of Sclerotinia sclerotiorum ( S. sclerotiorum ) in oilseed rape ( Brassica napus L. ). Taking advantage of the pH-responsive nature of ZIF-8, the composite responds selectively to the acidic microenvironment associated with pathogen infection. Upon 980 nm excitation, UCNPs emit at 650 nm, which activates MB to generate reactive oxygen species (ROS) via photolysis, thereby exerting antifungal effects. The physicochemical properties of UCNP@ZIF-8@MB, including its optical behavior, MB release profile, and adhesion capacity, were systematically characterized. Under mildly acidic conditions (pH 5.5–4.0), MB release exceeded 80 %, indicating efficient responsiveness to the infection milieu. In vitro antifungal assays demonstrated a minimum inhibitory concentration (MIC) of approximately 10 μg/mL under 980 nm laser irradiation. Pot experiments further confirmed significant antifungal activity under light exposure. Additionally, UCNP@ZIF-8@MB exhibited targeted release and favorable biocompatibility with plant tissues and the surrounding environment. These results underscore the potential of UCNP@ZIF-8@MB as an environmentally friendly nanopesticide for the precise management of sclerotinia disease, offering a promising strategy for sustainable agriculture.
研究领域:
植物病理学
·
纳米技术
·
农业化学
·
精准农业
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
Minerals
·
2019
·Vol. 9
·期 4
·254
·
IF 2.25
Lvshan Zhou,Tongjiang Peng,Hongjuan Sun,Xiaogang Guo,Dong Fu
A precipitation reaction method was employed to prepare mesopore calcium carbonate (CaCO3) using rape flower pollen as the template. CaCO3adsorbent was characterized using X-ray diffraction (XRD), scanning electronic microscopy (SEM), and Brunner−Emmet−Teller measurements (BET). The equilibrium adsorption data on amoxicillin were explained using Langmuir, Freundlich, and Temkin adsorption isotherm models. The pseudo-first order, second order, pseudo-second order, and intra-particle diffusion kinetic models were used to explore adsorption kinetics. Equilibrium adsorption of as-prepared CaCO3was better depicted using the Langmuir adsorption model with an R2of 0.9948. The separation factor (RL) was found to be in the range of 0
研究领域:
材料科学
·
环境科学
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产品关联
DOI
高影响因子
Food Bioscience
·
2024
·
IF 4.8
Kai Zhu,Lichao Deng,Junling Wu,Yu Zhang,Juan Chen,Weiguo Wu,Luyan Liao
Rape moss is the tender stem of oilseed rape , which can be made into fermented vegetables via spontaneous fermentation. The aim of this study was to evaluate the effects of fermentation conditions on physicochemical components, volatile compounds, and antioxidant capacity of rape moss. The results showed that the optimal physicochemical parameters of fermented rape moss (FRM) were obtained with 70 % initial moisture content , 6 % salt addition, 7 days fermentation time, 15 °C fermentation temperature, while the strongest antioxidant capacity was achieved with 60 % initial moisture content, 7 % salt addition, 7 days fermentation time, 15 °C fermentation temperature. Additionally, 51 volatile compounds in FRM were identified by HS-SPME-GC-MS, mainly including ketones, alcohols and esters. Notably, Pearson correlation analysis revealed that protein and fat were significantly positively correlated with antioxidant activity in FRM (p < 0.01). These findings could provide a theoretical basis for the development and functional research of FRM products.
研究领域:
食品科学
·
植物学
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
·
2023
·
IF 2.6
Lu-Qing Xie,Guo-Ling Zhao,Xin-Yu Jiang,Jin-Gang Yu
Novel rape seedling peel-derived biochars (BCs) prepared by vacuum pyrolysis were used as cost-saving and sustainable biosorbents for wastewater remediation. The adsorption properties of BCs for p-nitrophenol (PNP) were investigated. The results showed that BC400 prepared at 400°C possessed the highest adsorption capacity of 55.78 mg g−1 towards PNP. Scanning electron microscopy, Energy dispersive X-ray spectroscopy, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, Zeta potential analysis and Brunauer-Emmett-Teller specific surface area analyses were performed to characterise the physicochemical properties of BC samples. The microporous structure and abundant surface heteroatomic functional groups of BC400 were confirmed. The effects of adsorption conditions (contact time, temperature, initial PNP solution pH, initial PNP concentration) on the adsorption of PNP by BC400 were investigated. Adsorption behaviour was more consistent with the linear Freundlich model and linear pseudo-second-order kinetic model. Thermodynamic study showed that the adsorption of PNP on BC400 was a spontaneous endothermic process, and the disorder degree increased after adsorption. In addition, the adsorption capacities of BC400 for different phenols including hydroquinone, 3-nitrophenol, 1-naphthol (AN) and tert-butyl hydroquinone were compared, and the mechanism was also proposed. BC400 with aromatic and heteroatom-containing functional groups could interact effectively with PNP through various intermolecular interactions including π-π stacking, hydrogen bonding and electrostatic attraction. Reusability assessment indicated BC400 remained high removal rate even after 10 consecutive adsorption-desorption cycles.
研究领域:
环境科学
·
材料科学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）