JOURNAL OF FOOD COMPOSITION AND ANALYSIS
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2023
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IF 4.3
Yuanqian Xiong,Dong Zhang,Cuizhu Ye,Yu Wang,Xiangrui Deng,Danwen Deng,Chunhong Xiong,Jinsheng Zhang,Qianhui Gu,Ganhui Huang
Ciprofloxacin hydrochloride is widely used to treat animal diseases. However, its chronic abuse has caused severe accumulation in animal-derived foods , which has seriously damaged human health. Thus, in this study, a novel molecularly imprinted electrochemical sensor (MIES) was designed for selective and ultra-sensitive detection of ciprofloxacin hydrochloride (CPFX) in milk. The sensor was based on the molecularly imprinted polymers (MIPs) synthesized with poly-pyrrole (PPy) as the functional monomer , AuNPs and S-CoFe-MOFs (CoFe-Metal organic frameworks coated with chitosan) as the Supporting materials , and CPFX as the template molecule. The electrochemical behavior of MIPs/S-CoFe-MOFs/AuNPs/GCE was studied by several electrochemical methods, which showed a wider detection linear range (0.05 ∼ 500 ng·mL -1 ) and lower detection limit (0.0033 ng·mL -1 ) than those in previous reports. The optimization of experiments confirmed the good selectivity and stability of the sensors----- with the milk sample recovery of 89.04∼110.26%, and the relative standard deviations (RSD) of less than 5.5%, which was close to HPLC. In conclusion, the sensor we constructed has a high selectivity and stability potential in detecting CPFX in milk.
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PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY
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2023
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IF 4.7
Xi-Ya Liu,Hui-Mei Sun,Yi-Hong Luo,Mao-Ye Li,Hai-Bing Liu,Su Liu
In insects, glutathione S -transferases (GSTs) play a pivotal role in the detoxification of a wide range of pesticides. The cigarette beetle, Lasioderma serricorne , is an economically important pest insect of stored products. Recently, pyrethroid insecticides have been used to control this pest. However, little is known concerning the responses and functions of GSTs in L. serricorne under pyrethroid exposure. In this study, transcriptome sequencing was performed on L. serricorne , and a total of 14 GSTs were identified by retrieving the unigene dataset. Of these, 13 predicted GSTs fell into six cytosolic classes, namely, delta, epsilon, omega, sigma, theta, and zeta, and one was assigned to an “unclassified” group. The GST genes were differentially expressed in various larval tissues and at different developmental stages. Exposure to the pyrethroid insecticide lambda-cyhalothrin (LCT) caused oxidative stress in L. serricorne larvae and led to significantly elevated expression levels of six genes, among which LsGSTe1 was the most upregulated. Recombinant LsGSTE1 protein displayed LCT-metabolizing activity. Furthermore, LsGSTE1 protects cells against oxidative stress. Moreover, knockdown of LsGSTe1 by RNA interference dramatically increased the susceptibility of L. serricorne larvae to LCT treatment. The results from this study provide sequence resources and expression data for GST genes in L. serricorne . Our findings indicate that LsGSTE1 plays a dual role in LCT detoxification by metabolizing the pesticide and by preventing LCT-induced oxidative stress. Thus, the LsGSTe1 gene could be used as a potential target for sustainable management of the cigarette beetle.
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JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2023
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IF 4.5
Lin Wu,Jie Feng,Zhijuan Zou,Kunpeng Song,Chunmei Zeng
It’s still a challenge to design reasonably efficient catalyst based on non-noble metal for water decomposition. Herein, we prepared a self-supported S-NiFe/NFF catalyst by sulfurated NiFe-based metal–organic framework on the NiFe foam (NFF) through a simple solvothermal method. Benefiting from the direct contact with the conductive NiFe foam matrix, the electronic environment of the active site regulated by heteroatomic oxygen and sulfur, and the positive synergistic effect between nickel and iron, the catalyst S-NiFe/NFF shows outstanding electrocatalytic activity for oxygen evolution (OER) and hydrogen evolution (HER) reactions with a low overpotential of 174 mV and 150 mV at a current density of 10 mA cm −2 in alkaline electrolyte, respectively; and the S-NiFe/NFF‖S-NiFe/NFF cell only needs 1.50 V battery voltage to reach the current density of 10 mA cm −2 . This work reports a highly efficient water decomposition catalyst, which indicates that non-noble metal-based electrocatalysts have great potential applications in the water electrolysis field, and provides a basis for rational design and synthesis of MOF-derived catalysts with unique structures.
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CONSTRUCTION AND BUILDING MATERIALS
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2023
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IF 7.4
Chenchen Xiong,Yulin Wang,Yang Zhou,Xingyu Liu,JinHui Tang,Pan Feng
An ordered structure and high mechanical property of calcium silicate hydrate (C-S-H) gel has been always pursued in the field of cementitious materials. In this paper, compacted and layer-by-layer stacking C-S-H plates were fabricated based on Layer-by-Layer (LBL) method and H-cell penetration (HCP) method through cation exchange membrane templating. This new way changed the randomly packing structure of traditional C-S-H, and synthesized a high-orderly C-S-H platelets with denser structure. Based on molecular dynamics simulations, it can be attributed to the strong adsorption and nucleation sites contributed by sulfonic acid groups on the cation exchange membrane. Besides, AFM indentation experiments indicate this C-S-H owns significantly higher elastic modulus than traditional C-S-H, while the mechanical properties can be further increased by the addition of PVA and the regulation of reaction time. This new type C-S-H may pave the way to the preparation of high-performance concrete in the future.
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Journal of Materials Chemistry A
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2022
·Vol. 11
·期 2
·800-808
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IF 14.511
Yixuan Lv,Dandan Ma,Kunli Song,Siman Mao,Zhetong Liu,Dan He,Xuewen Zhao,Tianhao Yao,Jian-Wen Shi
The gradual depletion of global fossil energy and environmental pollution make the development of hydrogen energy an imminent concern. Two-dimensional g-C3N4 (CN) based heterostructures have attracted considerable research interest in the photocatalytic H2 evolution field, but the unsatisfactory interfacial contact between metal-free CN and other metal oxide/sulfide semiconductors usually results in a low transfer efficiency of charge carriers. Herein, we develop a new homojunction by in situ decoration of CN nanosheets with a C–N compound broken by s-triazine units (abbreviated to BST). The resultant CN/BST homojunction presents significantly enhanced photocatalytic H2 generation (12.47 mmol g−1 h−1), which is about 4 and 33 times higher than that of pristine CN (3.086 mmol g−1 h−1) and BST (0.376 mmol g−1 h−1), respectively. It is revealed that the BST fragments tightly anchored on the CN nanosheets act as electron-trapping agents to rapidly transfer photogenerated electrons from the CN conduction band to generate hydrogen, effectively inhibiting the recombination of photogenerated electrons and holes. The work shows that the construction of a suitable homojunction is an effective way to obtain high photocatalytic activity.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2023
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IF 8.2
Lihua Zhang,Hailiang Sheng,Ran Liu,Mao Yang,Yuanlong Guo,Qinqin Xu,Lijie Hu,Songmiao Liang,Haibo Xie
The design and facile preparation of water-soluble and eco-friendly polymer packaging membrane materials is a fascinating research topic, particularly in terms of the increasing concerns on potential microplastics pollution in ecosystem. In this study, taking advantages of the structural features of chitosan (CS) and betaine hydrochloride (BHC), fully bio-sourced and water-soluble poly(aprotic/protic ionic liquid)s (PAPILs) were successfully designed and prepared through the reaction of the amino groups in CS and carboxyl groups in BHC. The structure and thermo-properties of the PAPILs were elucidated by a series of characteristic methods. The rheological properties of the PAPILs aqueous solutions were also investigated. Moreover, water-soluble PAPILs membrane with a smooth surface morphology and a tensile strength of 62.9 MPa was successfully prepared. The PAPILs membrane also exhibited satisfactory biocompatibility, excellent antibacterial activities and high oxygen barrier property. Together with these outstanding material performance and functionality, as a “proof of concept”, the potential use of the PAPILs membrane as water-soluble packaging material for laundry detergent capsule and pesticide was preliminarily demonstrated. These findings provide significant insights for the design of sustainable and functional packaging materials by using natural resources.
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CERAMICS INTERNATIONAL
·
2022
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IF 5.532
Min Zhang,Xue Zhao,Yunyuan Dong,Chenyao Hu,Xiaokang Xiang,Xiantao Zeng,Junhao Jia,Chen Jin,Liang Ding,Xiaobin Chen
The development of green and efficient photocatalytic materials for the treatment of medical and industrial wastewater has become a current research focus. In this work, the CeO 2 /Zn 0.4 Cd 0.6 S heterojunction with a special 0D/1D morphology was synthesized by a soft chemistry method. The successful construction of the heterojunction was verified by the binding energy migration of XPS and TEM . The photocatalytic activities were determined by photoreduction of hexavalent chromium ions (Cr VI ) and photodegradation of tetracycline hydrochloride (TC). The experimental results showed that the loading of CeO 2 significantly improves the photocatalytic performance of Zn 0.4 Cd 0.6 S, and the loading of 10 wt% CeO 2 has the best photocatalytic activity and structural stability. The S-scheme electron transport mechanism was particularly investigated through active species trapping experiments. This work provides an effective idea for the design of highly stable metal sulfide photocatalysts .
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SEPARATION AND PURIFICATION TECHNOLOGY
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2022
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IF 9.136
Wei Zhao,Mengru Yan,Xinran Yang,Xiaojun Zeng,Yantong Chen,Benlin Dai,Xiaozhong Chu,Xuekun Hong,Feihu Mu,Shijie Li,Dennis Y.C. Leung
Environmental pollution caused by the overusage and uncontrolled discharge of antibiotics such as amoxicillin will endanger public health and ecosystems. Herein, a novel Ag/MIL-68(In)-NH 2 /Bi 4 O 7 plasmonic heterojunction has been successfully prepared through a two-step route followed by photoreduction for environmentally friendly photocatalytic amoxicillin degradation. Ag/MIL-68(In)-NH 2 /Bi 4 O 7 displayed the most efficient photocatalytic performance, which was 3.7 and 3.2 times that of Bi 4 O 7 and MIL-68(In)-NH 2 , respectively. The superior photocatalytic activity was directly linked to its large surface area and localized surface plasmon resonance (LSPR) effect, which provides more active sites and effectively promotes visible light absorption. Moreover, the degradation path of amoxicillin was explored in detail by combining Gaussian software calculation with liquid chromatography-mass spectrometry (LC-MS) analysis. Finally, a series of characterizations and simulations were carried out to demonstrate the S-scheme photocatalytic mechanism.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2023
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IF 8.4
Anni Cui,Yiting Hou,Jialu Zhang,Xin Mu,Huan Wang,Yu Sun,Haitao Xu,Guiye Shan
Staphylococcus aureus (S. aureus) infections pose a serious threat to human health worldwide. Therefore, selective and accurate detection of S. aureus is necessary for preventing infections. Herein, we design the colorimetric-electrochemical sensing platform based on specific oligonucleotide (SA31 aptamer)-tunable oxidase-like activity of mesoporous polydopamine/MnO 2 (MPDA/MnO 2 ) nanozymes for the S. aureus detection. The MPDA/MnO 2 nanozymes possess excellent oxidase-like activity and electrochemical property. MPDA/MnO 2 nanozymes can catalyze the oxidation of TMB to generate TMB + (blue color) and TMB 2+ (yellow color) products. The oxidase-like activity of MPDA/MnO 2 can be inhibited when the SA31 is adsorbed on the surface of the nanozymes. In the presence of S. aureus, SA31 aptamer desorbs from MPDA/MnO 2 surface based on the specific identification between S. aureus and aptamer, resulting in the recovery of their oxidase-like activity. Based on the different oxidative degree of TMB, the color of sensing solution changes from blue to yellow, the electrochemical signals also have changed simultaneously. The colorimetric-electrochemical sensing platform can accurately detect S. aureus, showing a low detection limit in 3 CFU/mL (S/N = 3). Furthermore, the dual-mode sensing platform can be utilized for the accurate and specific detection of S. aureus in real sample with the recovery of 95.15%− 115.28%. This work based on SA31 aptamer-tunable oxidase-like activity of MPDA/MnO 2 nanozymes provides a dual-mode assay for specific and accurate detection of S. aureus.
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APPLIED CATALYSIS A-GENERAL
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2023
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IF 5.5
Huifang Feng,Yitong Sun,Qiaozhen Xu,Hong Liu
Developing efficient photocatalyst to promote the conversion of CO 2 into value-added chemicals remains challenging. Here, novel NH 2 -MIL-101(Fe)@Bi 2 MoO 6 S-scheme heterojunctions were fabricated via a solvothermal method, in which Bi 2 MoO 6 (BMO) nanoparticles uniformly growing on the NH 2 -MIL-101(Fe) (NM101) octahedrons with intimate contact interface. The resultant heterojunctions revealed significantly enhanced activity for CO 2 photoreduction. The optimal performance was achieved when the content of BMO was 10 wt%, and the formation rate of CO reached 67.0 μmol·g −1 ·h −1 under visible light illumination (with apparent quantum efficiency of 0.09 % at 450 nm), which was 3.2-fold of individual NM101. The boosting activity benefited from the formation of S-scheme heterojunction at the NM101 @BMO interfaces, which facilitated the separation of photoinduced electron-hole pairs with strong redox ability at the interface. This S-scheme charge transfer mechanism was further validated by the in-situ XPS and fluorescence probe molecular experiment. Besides, the intermediates and preliminary mechanism of photoreaction were unraveled based on in-situ DRIFTS analysis. This work provides some novel insights for designing efficient S-scheme photocatalysts for CO 2 photoreduction.
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PHYTOMEDICINE
·
2023
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IF 7.9
Zhihao Liu,Qixiang Shang,Haimeng Li,Daozheng Fang,Zhuohuan Li,Yuqi Huang,Mimi Zhang,Kam Ming Ko,Jihang Chen
Background Diabetic kidney disease (DKD) is one of the major chronic microvascular complications of diabetes and the main cause of end-stage renal failure. Zhenwu Decoction (ZWD), an ancient classic herbal formula in Chinese medicine, has been clinically used for the treatment of kidney disease in China for many years. However, there is currently limited research investigating the application of ZWD in the treatment of DKD and the underlying chemical and biochemical mechanisms involved. Therefore, in the present study, we aimed to identify active components in ZWD and unravel the possible mechanism(s) of action for ZWD in treating DKD. Methods The protective effect of ZWD against DKD was evaluated utilizing an in vitro model of diabetic renal proximal tubulopathy. The major chemical components from ZWD were identified by LC-MS/MS. Drug targets were predicted by submitting the SMILES (Simplified Molecular Input Line Entry System) of the compounds to SEA (Similarity Ensemble Approach) search server and SwissTargetPrediction. The differentially expressed genes (DEGs) of the disease were collected and integrated from GeneCards. The constructions of “Compounds-potential targets interaction” (CTI) network and Protein-Protein Interaction (PPI) network, as well as topology analysis were conducted by Cytoscape. Gene Ontology (GO)-enrichment and Metacore pathway enrichment analysis were also performed. Lastly, molecular docking and experimental studies were adopted to validate the core target and identify an active component(s) of ZWD. Results We demonstrated that the ZWD extract could significantly rescue the palmitic acid (PA) and high glucose-induced apoptotic cell death in HK-2 cells, and the cytoprotection was accompanied by decreases in the extent of reactive oxygen species (ROS) production, mitochondrial membrane depolarization and ATP depletion. Fifty-seven compounds in the aqueous extract of ZWD were identified by LC-MS. The results of PPI analysis showed that top hub genes involved epidermal growth factor receptor (EGFR), Signal Transducer and Activator of Transcription 3 (STAT3), Serine/Threonine Kinase 1 (AKT1), Vascular Endothelial Growth Factor A (VEGFA) and Fibroblast Growth Factor 2 (FGF2). Pathway enrichment analysis revealed the involvement of S1P1 receptor signaling and EGFR pathways. The results of molecular docking analysis showed that albiflorin has a high binding affinity to EGFR. Albiflorin could also exert protective effects in an HK-2 cell model of DKD, which may be related to the inhibition of the high glucose/high lipid-induced EGFR and Akt phosphorylation. Conclusion ZWD has been shown to be effective in ameliorating cell death in an experimental model of DKD. The beneficial effect of ZWD against DKD was associated with the interactions between the active ingredients and the hub genes, such as EGFR, STAT3, AKT1, and VEGF-A. Albiflorin may be one of the active components responsible for the nephroprotective effect in ZWD.
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CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Hongjian Gu,Cheng Liu,Qian Liu,Hang Jia,Yue Qiao,Wenqi Zhao,Yousi Chen,Xigao Jian
High-performance polymers that are both high temperature resistant and soluble is significant for the development of high-tech fields. 4,4′-(Thiobis(4,1-phenylene))bis(phthalazin-1(2H)-one) (T-BDHPZ) monomer is synthesized by an efficient two-step method using inexpensive phenyl sulfide and phthalic anhydride as raw materials. A series of novel poly(bisphthalazinone thioether sulfone ketone)s (PBPTSKs) were synthesized via aromatic nucleophilic substitution polycondensation. The structures of PBPTSKs were characterized by NMR and FT-IR. These polymers have glass transition temperatures ( T g s ) in the range of 302–328 ℃, and are soluble in N -methyl-2-pyrrolidone (NMP), pyridine (Py) and 1,1,2,2-tetrachloroethane (TECT), and partially soluble in N , N -dimethylacetamide (DMAc), N , N -dimethylformamide (DMF), dichloromethane (DCM), trichloromethane (TCM) and pyridine. PBPTSK films were prepared by solution casting, and the average light transmittance from 400 to 800 nm of films are all over 70%. PBPTSK boards prepared by hot press molding have outstanding mechanical properties with the tensile strength and the flexural strength of 91–102 MPa and 123–135 MPa, respectively. PBPTSK boards also exhibit excellent high- and low-temperature resistance properties at 290 and −60c, respectively. Moreover, these polymers with bisphthalazinone thioether moiety have outstanding inherent flame retardancy, which pass the V-0 level of the UL-94 test. This provides opportunities to develop high-performance polymers that are both high temperature resistant and soluble, showing great prospects in frontier applications.
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