JOURNAL OF SOILS AND SEDIMENTS
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2024
·Vol. 24
·期 7
·2713-2723
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IF 2.8
Hua Li,Dang Fanglin,Yu Lumengfei,Zhao Hui,Wei Ting,An Fengqiu
Purpose This study aimed to investigate the residual levels of representative organophosphorus and pyrethroid pesticides (chlorpyrifos, cypermethrin, deltamethrin, and lambda-cyhalothrin) in agricultural soils and crops in Shaanxi Province, and to reveal their accumulation characteristics and regional distribution characteristics in crops. Materials and methods The study was conducted using 115 soils and crops samples from typical agricultural areas in Shaanxi Province. The pesticide residues were measured using gas chromatography-mass spectrometry (GC-MS). The crops were analyzed based on the residue characteristics of fruits, vegetables, and field crops. Additionally, the pesticide residues in crops from the Guanzhong area (central part of Shaanxi), northern Shaanxi, and southern Shaanxi regions were analyzed. A correlation analysis was conducted to examine the influencing factors of pesticide residues in soil-crops, considering the physical and chemical properties of the soil in Shaanxi Province. Results and discussion The results indicate that there are differences in the detection rates and residual concentrations of different pesticides in soil. In the Guanzhong area, the pesticide residual levels in crops follow the trend of chlorpyrifos > deltamethrin > lambda-cyhalothrin > cypermethrin, with relatively high pesticide residues found in corn. In northern Shaanxi, the overall pesticide residual levels in crops show a trend of chlorpyrifos > deltamethrin > cypermethrin > lambda-cyhalothrin. In southern Shaanxi, all the pesticides were detected to varying degrees in crops, with chlorpyrifos showing the highest residual levels. Conclusions All four pesticides were detected in the soils of the study area and the enrichment capacity of different crops varied greatly. Pesticide enrichment is not only affected by temperature and climate conditions in different regions, but soil organic matter, pH, and CEC also have a significant effect on the enrichment of pesticides by crops.
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INTERNATIONAL JOURNAL OF FOOD MICROBIOLOGY
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2025
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IF 5.2
Lijun Tan,Yong Xie,Wendi Zhang,Shasha Zheng,Ying Wu,Yunhao Ma,Jinsong Zhao,Cong Li,Baocai Xu
Understanding the role of common microorganisms in the spoilage of cooked sausages is essential for developing effective preservation strategies. In the framework of this study, six potential spoilage microorganisms were isolated from spoiled cooked sausages, identified through morphological, physiological, and genetic analyses as Bacillus cereus (two strains), Bacillus safensis , Bacillus altitudinis , Bacillus megaterium , and Bacillus infantis . All isolates exhibited significant protein or lipid degradation activities, except for B. infantis . The spoilage potential of Bacillus was systematically evaluated using a cooked sausage inoculation model in situ based on physical, chemical, and biological changes. Results indicated that Bacillus rapidly colonized cooked sausages, accelerating protein and lipid degradation and thereby deteriorating appearance and texture. Additionally, 74 volatile organic compounds (VOCs) were identified in both Bacillus -inoculated and control samples, revealing that Bacillus transformed aroma compounds such as terpenes into off-flavor compounds like alcohols, aldehydes, and acids ( e.g. , 1-octen-3-ol, nonanal, and phenylacetic acid). Correlation analysis confirmed the association of Bacillus with spoilage characteristics and VOCs evolution. This study elucidates the spoilage potential and mechanisms of Bacillus in cooked sausages, providing a foundation for developing an effective quality control strategy.
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TOXICOLOGY MECHANISMS AND METHODS
·
2024
·
IF 2.8
Wenqing Sun,Yufeng Xu,Zhiqin Liu,Wei Liu,Hongting Wang,Guanyu Chang,Zihui Yang,Zhen Dong,Jianguo Zeng
Sanguinarine (SAN) is an alkaloid with multiple biological activities, mainly extracted from Sanguinaria canadensis or Macleaya cordata. The low bioavailability of SAN limits its utilization. At present, the nature and mechanism of SAN intestinal absorption are still unclear. The pharmacokinetics, single-pass intestinal perfusion test (SPIP), and equilibrium solubility test of SAN in rats were studied. The absorption of SAN at 20, 40, and 80 mg/L in different intestinal segments was investigated, and verapamil hydrochloride (P-gp inhibitor), celecoxib (MPR2 inhibitor), and ko143 (BCRP inhibitor) were further used to determine the effect of efflux transporter proteins on SAN absorption. The equilibrium solubility of SAN in three buffer solutions (pH 1.2, 4.5 and 6.8) was investigated. The oral pharmacokinetic results in rats showed that SAN was rapidly absorbed (Tmax=0.5 h), widely distributed (Vz/F = 134 L/kg), rapidly metabolized (CL = 30 L/h/kg), and had bimodal phenomena. SPIP experiments showed that P-gp protein could significantly affect the effective permeability coefficient (Peff) and apparent absorption rate constant (Ka) of SAN. Equilibrium solubility test results show that SAN has the best solubility at pH 4.5. In conclusion, SAN is a substrate of P-gp, and its transport modes include efflux protein transport, passive transport and active transport.
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JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
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2025
·
IF 6.2
Xin Ma,Shimin Wu
Parent and oxygenated polycyclic aromatic hydrocarbons (PAHs and OPAHs) have gained increasing attention due to their toxicity. However, their formation mechanisms during baking remain unclear. This study aimed to elucidate their formation pathways from amino acids in baking systems. The effects of five amino acids on PAH24 and OPAH12 levels in bread were investigated. Phenylalanine addition (2%) caused the most significant 15-fold increase in the toxic equivalent quotient of PAH36. Stable isotope tracing technology revealed that both the phenyl ring and C3 atom of phenylalanine were incorporated into benzo[a]anthracene and 9-fluorenone, proving the transformation of phenylalanine into PAHs and OPAHs. By nontarget analysis and chemical reactivity analysis, styrene, (E)-stilbene, and benzophenone were identified as key intermediates in the formation of naphthalene, benzo[a]anthracene, and 9-fluorenone, respectively. Overall, this study first proposed the formation pathways of PAHs and OPAHs from phenylalanine, offering guidance for reducing their health risks during baking.
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Progress in Natural Science-Materials International
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2024
·
IF 4.8
Min Dong,Qingya Sun,Zhihua Wang,Zixin Rui,Zhe Zhang,He Zhu,Si Lan
Layered LiNi x Co y Mn z O 2 (NCM) cathode materials have emerged as the best choice for high-energy-density lithium-ion batteries for powering electric vehicles. Despite significant research efforts, the understanding of complex structural dynamics during lithium (de-) intercalation still remains a subject of debate, especially in scenarios where morphology and composition vary. In this study, we carried out in situ high-energy synchrotron X-ray diffraction experiments on commercial NCM523 cathode materials in both single crystal and polycrystalline forms to probe the structural changes during charging and discharging in detail. Our findings reveal that both single crystal and polycrystalline materials exhibit typical H1–H2–H3 phase transitions. However, in polycrystalline NCM532, a monoclinic intermediate phase emerges between the H1 and H2 phases. During this process, symmetry reduces from R -3 m to C 2/ m , which is attributed to a shear distortion along the ab plane. In contrast, for single crystal materials, the H1 phase directly transforms into the H2 phase without the monoclinic phase. The observed monoclinic distortion significantly impacts structural stability and material cycling performance. This study provides new insight into the structural dynamics in NCM532 cathode materials, particularly concerning morphology-dependent behaviors, which could deepen our understanding of the relationship between NCM material structures and their performance.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Zhi-Jun Zhu,Guanhua Shen,Akbar Bashir,Danqing Liu,Xiaohong Wu,Yikun Huang,Yangjun Zhang,Junxuan Luo,Chen Liu,Da-Zhu Chen
Extreme temperature conditions often accelerate the degradation of supercapacitor materials and elevate electrolyte resistance, reducing device longevity and reliability. Efficient temperature regulation is necessary to ensure that supercapacitors can work stably under harsh environmental conditions. To overcome these challenges, we introduce a phase-change fiber film with a core-sheath structure and dual phase-change temperature range fabricated using advanced layer-by-layer coaxial electrospinning. The film was used as a substrate for the in situ polymerization of polyaniline nano-arrays after vacuum coating with a gold layer to create flexible supercapacitors with a PVA/H 2 SO 4 gel electrolyte. The unique needle-like polyaniline nano-arrays enhance the surface area and ion transport channels, resulting in a device with an areal capacitance of 521.3 mF cm −2 at a scan rate of 5 mV s −1 . Our phase change fibers have a high latent heat of 62.4 J g −1 in the 0–10 °C and 40–50 °C ranges for efficient temperature regulation. The stabilized capacitance and internal resistance over two phase-change regions highlight the robust thermal regulation of the device. This advancement represents a significant leap forward for flexible supercapacitors, offering enhanced thermal management and vast potential for future energy storage applications.
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Gut Microbes
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2025
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IF 11
Xinwei Li,Xia Xiao,Shengnan Wang,Biyu Wu,Yixuan Zhou,Pan Deng
Polyamines are important gut microbial metabolites known to affect host physiology, yet the mechanisms behind their microbial production remain incompletely understood. In this study, we developed a stable isotope-resolved metabolomic (SIRM) approach to track polyamine biosynthesis in the gut microbiome. Viable microbial cells were extracted from fresh human and mouse feces and incubated anaerobically with [U-13C]-labeled inulin (tracer). Liquid chromatography-high resolution mass spectrometry analysis revealed distinct 13C enrichment profiles for spermidine (SPD) and putrescine (PUT), indicating that the arginine-agmatine-SPD pathway contributes to SPD biosynthesis in addition to the well-known spermidine synthase pathway (PUT aminopropylation). Species differences were observed in the 13C enrichments of polyamines and related metabolites between the human and mouse microbiome. By analyzing the fecal metabolomics and metatranscriptomic data from an inflammatory bowel disease (IBD) cohort, we found significantly higher polyamine levels in IBD patients compared to healthy controls. Further investigations using single-strain SIRM and in silico analyses identified Bacteroides spp. as key contributors to polyamine biosynthesis, harboring essential genes for this process and potentially driving the upregulation of polyamines in IBD. Taken together, this study expands our understanding of polyamine biosynthesis in the gut microbiome and will facilitate the development of precision therapies to target polyamine-associated diseases.
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ACS Sensors
·
2025
·
IF 9.1
Zhibo Liu,Xinshuo Huang,Zhengjie Liu,Shantao Zheng,Chuanjie Yao,Tao Zhang,Shuang Huang,Junrui Zhang,Jizhuang Wang,Shady Farah,Xi Xie,Hui-jiuan Chen
Gouty arthritis is one of the most common forms of inflammatory arthritis and has brought a significant burden on patients and society. Current strategies for managing gout primarily focus on long-term urate-lowering therapy. With the rapid advancement of point-of-care testing (POCT) technology, continuous monitoring of gout-related biomarkers like uric acid (UA) or inflammatory cytokines can provide rapid and personalized diagnosis for gout management. In this study, a plug-in design of a microneedle electrode array (PIMNA) was developed and integrated into a multi-parameter sensing portable system in combination with embedded circuits and a mobile application. The system enabled real-time, in situ, and dynamic monitoring of biomarkers, including UA, reactive oxygen species (ROS), and pH at gouty joints. The multi-parameter monitoring system demonstrated a wide linear response range, excellent selectivity, stability, reproducibility, and reliable signal transmission performance. In vivo experiments demonstrated the real-time monitoring capability of PIMNA for UA, ROS, and pH, showing the potential to facilitate urate-lowering management and inflammation assessment. Prospectively, the system enables quantitative analysis of the complexity and diversity of gout, presenting promising applications in clinical practice. This work provides a unique strategy with potential for broader applications in gout management and arthritic disease treatment.
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CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Yuanyuan Fan,Shun Li,Daobin Zhu,Keyu Guo,Rangrang Fan,Chunfeng Dong,Yongtao Liu,Yong Li,Junshan Hu
The thermal quenching effect of photoluminescent materials greatly limits their practical applications in bioimaging, sensing, radiation detection, and photovoltaic devices. In this paper, the upconversion luminescence (UCL) of Sc 2 W 3 O 12 :Er 3+ /Yb 3+ was significantly improved by doping Ba 2+ ions. The study identifies that the optimal doping concentration of Ba 2+ ions within the negative thermal expansion (NTE) phosphors Sc 2 W 3 O 12 : Er 3+ /Yb 3+ is 0.03 mol, the green and red light intensities of Sc 2 W 3 O 12 : Er 3+ /Yb 3+ /Ba 2+ phosphor were increased by 32.76 times and 23.06 times. When the temperature rises from 298 K to 523 K, the NTE effect causes an abnormally increased luminous intensity. Utilizing fluorescence intensity ratio (FIR) technology, the temperature sensing characteristics of the Sc 2 W 3 O 12 : 0.30 Yb 3+ , 0.02 Er 3+ , 0.03 Ba 2+ phosphor were further examined, achieving maximum relative and absolute sensitivities of 1.24 % K −1 and 1.97 % K −1 , respectively.
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ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Youcai Che,Jingqiu Shang,Yuhao Zhang,Shuowen Bo,Jing Zhang,Xupeng Qin,Xinyu Liu,Haixin Sun,Wanlin Zhou,Yaling Jiang,Xin Chen,Shi He,Dongwei Ma,Fengwen Pan,Qinghua Liu
Seawater electrolysis is pivotal for sustainable hydrogen production, yet chloride-induced catalyst corrosion severely hinders its efficiency. Here, a (Mo, Co)P x electrocatalyst via a two-step hydrothermal-phosphorization strategy is engineered, enabling in situ formation of a dynamic dual-anion (MoO 4 2 ⁻/PO 4 3 ⁻) Cl − -rejection interface. This tailored interface effectively blocks Cl − adsorption while preserving hydroxyl accessibility, significantly enhancing corrosion resistance in alkaline seawater. The optimized (Mo, Co)P x delivers exceptional oxygen evolution reaction performance in alkaline seawater electrolysis, achieving ultralow overpotentials of 213 and 360 mV to reach current densities of 10 and 1000 mA cm −2 , respectively. Remarkably, the (Mo, Co)P x with an in situ-generated dual-anion rejection layer demonstrates exceptional durability, exhibiting only a 20mV performance degradation during a 480-h stability test under high-current conditions. In situ Raman spectroscopy, in situ attenuated total reflectance surface-enhanced infrared absorption spectroscopy, and density functional theory calculations demonstrate that the dual-anion layer not only enhances Cl − rejection but also promotes rapid surface reconstruction of Co species and enhances interfacial water adsorption, thereby suppressing the competitive chlorine evolution reactions. This work provides a rational strategy for designing durable electrocatalysts with in situ-engineered anion-rejection interfaces, advancing efficient alkaline seawater electrolysis.
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Advanced Energy Materials
·
2022
·Vol. 12
·期 9
·2103607
·
IF 29.698
Zhonghui Gao,Jiayi Yang,Guanchen Li,Thimo Ferber,Junrun Feng,Yuyu Li,Haoyu Fu,Wolfram Jaegermann,Charles W. Monroe,Yunhui Huang
Solid-state sodium–metal batteries will not achieve reasonable power density without electrolytes that solve the dendrite (filamentation) problem. Metal-filament formation during plating at ceramic/metal interfaces can cause electrical failure by internal short-circuit or mechanical failure by electrolyte fracture. Herein, an Na 3 Zr 2 Si 2 PO 12 (NZSP) sodium-ion-conducting NASICON electrolyte in which TiO 2 is incorporated as an additive is presented, leading to a two-phase composite NZSP(TiO 2 ) with improved density, Young's modulus, hardness, grain structure, and bulk permittivity. These features of NZSP(TiO 2 ) suppress dendrite growth along grain boundaries, microcracks, and micropores. As well as demonstrating ultralow ceramic/Na kinetic resistance with electrochemical measurements, X-ray photoelectron spectroscopy is performed to probe interfacial reaction mechanisms. The TiO 2 phase forms within grain boundaries and along NZSP surfaces. This modifies the two-phase material's microstructure and improves its electrochemical performance, while also increasing the critical current density for dendrite formation. Design guidelines are discussed to mitigate microscopic defects and dendrites in two-phase ceramic electrolytes.
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ADVANCED MATERIALS
·
2025
·
IF 26.8
Chunjian Wang,Shuling Xiang,Liang Chen,Lingyan Liang,Jiangping Tu,Shengcheng Shen,Hongtao Cao,Hongliang Zhang
Electrochromic devices (ECDs) offer significant energy-saving potential for applications such as smart windows and displays by modulating optical properties in response to electrical stimuli. However, their widespread adoption is limited by challenges associated with electrolyte stability and the formation of a robust solid-electrolyte interphase (SEI). In this study, a novel quasi-solid polymer electrolyte (QSPE) based on a UV-curable matrix of poly(ethylene glycol) diacrylate (PEGDA) incorporated with poly(vinylidene fluoride-trifluoroethylene-chlorofluoroethylene) [P(VDF-TrFE-CFE), abbreviated as PVTC] is presented. The high dielectric constant of PVTC facilitates lithium-ion transport, while electrochemical cycling triggers partial dehydrofluorination, thereby promoting in situ formation of a LiF-rich SEI layer on WO 3 surface. The optimized electrolyte exhibits excellent properties, including high optical transparency (88.7%), ionic conductivity (1.76 mS cm −1 ), and mechanical robustness. When applied in ECDs, PVTC enables outstanding performance, achieving 86.29% optical retention from the 5000th to the 40 000th cycle and 98.78% charge retention after 50 000 charge–discharge cycles. Furthermore, prototype demonstrations in smart windows and electrochromic sunglasses validate the scalability and flexibility of the proposed system, highlighting a promising strategy for advancing durable, high-performance ECDs through innovative electrolyte design.
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