OPTICS AND LASERS IN ENGINEERING
·
2024
·
IF 3.5
Kai Li,Junyang Fang,Mingzhen Li,Long Sun,Chao Wang,Fan Du,Xiaoying Wang
Loofah-like nanostructures have been applied in many fields because of their high specific surface area, high porosity, and low density. Developing additive manufacturing methods for loofah-like nanostructures remains a challenge. This paper proposed a novel E-Jet nanoprinting method with real-time laser zone irradiation, for one-step fabricating of loofah-like ZnO nanostructures. The combination of laser irradiation and electrohydrodynamic effect had been proved in detail by adding laser irradiation to the traditional E-Jet printing process. Printable ZnO inks were prepared. The numerical model of the jetting under the combination of flow field and electric field; and the model of the interaction between laser and printing structure were established respectively. The laser beam irradiated the printing structure in real-time to rapidly absorb energy, resulting in thermal expansion and thermal decomposition. The shock wave generated by laser irradiation induced the physical fragmentation and redistribution of particles in the printed structure. Printing at different laser powers was investigated; and the loofah-like ZnO nanostructures, down to the scale of ∼90 nm, have been directly printed without post-processing. The characteristic morphology and hydrophilic characteristics of the printed structure were studied. This study provided a new way for green and efficient additive fabrication of loofah-like nanostructures, which was of significance for the development of nanofabrication and nanodevices.
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JOURNAL OF FOOD SCIENCE
·
2024
·Vol. 89
·期 12
·9271-9282
·
IF 3.2
Jiayue Zhou,Dong Li,Yanqun Xu,Xiaochen Zhang,Lei Wang,Lin Zhou,Liang Zou,Zisheng Luo
( E )-2-Hexenal (E2H) is an important volatile organic compound (VOC) that can serve as a marker for fruit quality sensing and shelf-life evaluation. However, visual and portable sensors for E2H have not been reported mainly because of the difficulty in selective response to E2H while avoiding interference from other VOC, especially isomers. Herein, we developed a novel colorimetric sensor based on thiol-functionalized polydiacetylene assembly (PDA-SH/PDA) for the quantitative and selectivity of E2H. The mechanism was that E2H underwent a Michael addition reaction with sulfhydryl groups in PDA-SH/PDA. The Michael addition reaction destroyed the hydrogen bond and distorted the conjugated molecular system, resulting in colorimetric responses. Under optimal conditions, a good linear relationship was observed between E2H concentration and red colorimetric shift ( R 2 = 0.9679). The E2H sensor yields a high analytical sensitivity of 1.5203% and a limit of detection of 0.015 g L −1 . Besides, the PDA-SH/PDA sensor can be used to visually distinguish E2H and its isomer ( Z )-3-hexenal. The PDA-SH/PDA sensor yielded a statistically significant difference in red colorimetric shift ( p < 0.01) between the pairs of isomers in the ripeness of fruits. At last, the sensor was utilized for detecting E2H in grapes from different shelf lives. We found that the E2H concentration increased from 66.16 ± 1.54 to 67.56 ± 1.30 µg L −1 as storage time was prolonged. The results of this research not only demonstrated the feasibility of visual and on-site detection of E2H but also provided potential promise for portable fruit quality sensing and shelf-life evaluation.
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Journal of Materials Chemistry C
·
2025
·
IF 5.1
Junshu Feng,Zhenhua Tang,Guo-Xun Zeng,Tingsu Liu,Long Ye,Xin-Gui Tang,Yan-Ping Jiang,Xiu-Juan Jiang
Two-dimensional transition metal carbide/nitride (MXene) materials have been extensively employed in wearable electronics due to their outstanding physicochemical properties. Here, a straightforward and efficient ultrasonic welding technique combined with dip-coating was sequentially used to form PDA/MXene/APS-PFOTES multifunctional e-textile sensors on low-cost airlaid paper (AP) substrates. The PDA/MXene/APS-PFOTE/AP e-textile sensors showed exceptional breathability and superhydrophobicity, even under challenging conditions such as ultrasonic cleaning, high temperatures, and UV irradiation. Meanwhile, smart PDA/MXene/APS-PFOTE/AP e-textile devices exhibited stable sensing strain performances with a fast response time of 0.35 seconds and a broad range of 20 Pa–104.3 kPa. Additionally, the composite conductive fabric can be utilized for clinical monitoring of human activities through wireless transmission systems and can be applied for electromagnetic interference (EMI) shielding, demonstrating an EMI shielding effectiveness (SE) of 17 dB in the 8.2–12.4 GHz range.
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CARBOHYDRATE RESEARCH
·
2024
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IF 2.4
Lin Wang,Yu Pang,Zhongwen Su,Meihua Xin,Mingchun Li,Yangfan Mao
N -(sodium 2-hydroxypropylsulfonate) chitosan (HSCS), N -sulfonate chitosan (SCS) and N -isonicotinic sulfonate chitosan (ISCS) were prepared. The structures of the prepared chitosan derivatives were characterized by nuclear magnetic resonance ( 1 H NMR) spectroscopy, Fourier transform infrared (FTIR) spectroscopy, ultraviolet–visible (UV–vis) spectroscopy and elemental analysis (EA). Antibacterial and antibiofilm activities of these chitosan derivatives were evaluated in vitro . The minimum inhibitory concentration (MIC) of HSCS and SCS against Escherichia coli ( E. coli ) and Staphylococcus aureus ( S. aureus ) were 0.625 mg/mL and 0.156 mg/mL, respectively. ISCS exhibited MIC values of 0.313 mg/mL and 0.078 mg/mL against E. coli and S. aureus , respectively. ISCS demonstrated superior antibacterial and antibiofilm properties compared to SCS and HSCS. These findings suggest that the incorporation of a pyridine structure into sulfonate chitosan enhances its antibacterial and antibiofilm activities, and the prepared ISCS has a promising application prospect for controlling the reproduction of microorganisms in the field of food packaging.
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Biology-Basel
·
2025
·Vol. 14
·期 3
·226
·
IF 3.5
Zonghan Jiang,Leisheng Sun,Yuanyuan Li,Haoyu Li,Yu Fu,Jiyun Li,Zhiliang Sun
Simple SummaryEscherichia coliis a ubiquitous pathogen, with certain strains causing severe diarrhea and intestinal illnesses, which pose significant health risks to both children and animals. As antimicrobial resistance continues to rise, traditional antibiotics are increasingly ineffective, highlighting the urgent need for novel therapeutic strategies. In this study, we investigated the antimicrobial peptide D-CONGA-Q7, aiming to evaluate its efficacy and underlying mechanism against drug-resistantE. colistrains. Our results demonstrate that D-CONGA-Q7 effectively disrupts bacterial cell membranes, leading to bacterial death, and exhibits comparable activity against polymyxin- and meropenem-resistant strains. In vivo experiments revealed that D-CONGA-Q7 significantly alleviated intestinal inflammation, reduced inflammatory cytokine levels, and promoted the repair of damaged intestinal tissues. Furthermore, D-CONGA-Q7 displayed good stability. These findings suggest that D-CONGA-Q7 not only represents a promising new approach to combat drug-resistant bacterial infections but also holds potential for clinical application.Escherichia coli(E. coli) is a zoonotic bacterium widespread in the environment, highly transmissible, and responsible for significant economic losses and millions of cases of illness annually. The rise of multidrug-resistant (MDR) strains has rendered last-line antibiotics such as polymyxin and meropenem ineffective, making the development of new antibiotics urgent. Although D-CONGA-Q7 has broad-spectrum bactericidal activity, its underlying mechanism remains poorly understood. In this study, we used in vitro and in vivo experiments to demonstrate that D-CONGA-Q7 effectively kills both antibiotic-sensitive and multidrug-resistant strains ofE. coli. D-CONGA-Q7 disrupts the cell membranes of Gram-negative bacteria, and the treatment ofE. colistrainLN175with D-CONGA-Q7 resulted in a significant up-regulation of theMlacgene, suggesting that D-CONGA-Q7 may interact with phospholipids in the cell membrane. Furthermore, in treatingK88-induced bacterial enteritis in the small intestine, D-CONGA-Q7 significantly reduced intestinal inflammation. In conclusion, this study provides a novel approach to combat drug-resistantE. coli.
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Frontiers in Chemistry
·
2025
·
IF 4.2
Pan-Pan Zhang,Xin-Jing Gui,Xue-Hua Fan,Han-Li,Hai-Yang Li,Xiao-Peng Li,Feng-Yu Dong,Yan-Li Wang,Jing-Yao,Jun-Han Shi,Rui-Xin Liu
Amomi fructus (AF) has been used for both medicinal and food purposes for centuries. However, issues such as source mixing, substandard quality, and product adulteration often affect its efficacy. This study used E-nose (EN) and headspace-gas chromatography-ion mobility spectrometry (HS-GC-IMS) to determine and analyze the volatile organic compounds (VOCs) in AF and its counterfeit products. A total of 111 VOCs were detected by HS-GC-IMS, with 101 tentatively identified. Orthogonal Partial Least Squares-Discriminant Analysis (OPLS-DA) identified 47 VOCs as differential markers for distinguishing authentic AF from counterfeits (VIP value >1 and P < 0.05). Based on the E-nose sensor response value and the peak volumes of the 111 VOCs, the unguided Principal Component Analysis (PCA), guided Principal Component Analysis-Discriminant Analysis (PCA-DA), and Partial Least Squares-Discriminant Analysis (PLS-DA) models were established to differentiate AF by authenticity, origin, and provenance. The authenticity identification model achieved 100.00% accuracy after PCA analysis, while the origin identification model and the provenance identification model were 95.65% (HS-GC-IMS: PLS-DA) and 98.18% (HS-GC-IMS: PCA-DA/PLS-DA), respectively. Further data-level fusion of E-nose and HS-GC-IMS significantly improved the accuracy of the origin identification model to 97.96% (PLS-DA), outperforming single-source data modeling. In conclusion, the intelligent data fusion algorithm based on E-nose and HS-GC-IMS data effectively identifies the authenticity, origin, and provenance of AF, providing a rapid and accurate method for quality evaluation.
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ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Salah Naji Sufyan,Yusof A. Y. A. Mohammed,Chenglong Mu,Kashan Bashir,Ning Wen,Muhammad Mamoor,Xiuling Jiao,Dairong Chen,Ting Wang
Flexible piezoresistive pressure sensors are crucial for next-generation wearable electronics, yet achieving simultaneous high sensitivity, durability, and mechanical robustness remains a challenge. Herein, we report a high-performance piezoresistive sensor fabricated through the integration of two-dimensional MXene nanosheets with a hierarchically structured modified polyamide 6 nanofiber net (D-PA6 NFN) using scalable vacuum filtration. Benefiting from the synergistic combination of MXene’s excellent electrical properties, web-like architecture, the composite nanofiber tensile strength (52 MPa), and flexibility (40%), the resulting sensor exhibited good sensitivity (0.189 kPa–1), a rapid response/recovery time (14/13 ms), and an ultralow detection limit (4.2 Pa). Moreover, the device maintained stability over 12,000 compression cycles. The sensor precisely captured both subtle physiological signals (pulse waveforms) and large-scale dynamic motions (joint flexion). This work establishes a scalable strategy for engineering durable, high-sensitivity electronic skins, with immediate applications in advanced human-machine interfaces and real-time physiological monitoring.
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ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
·
2025
·
IF 6.1
Shiyu Zhang,Bowen Gong,Rong Tan,Yufen Liao,Xin Wang,Xu Wang,Ying Liu,Ting Liu,Jun Luo,Weiwei Li,Jia Yu,Ying Peng,Jiang Zheng
8-Epidiosbulbin E acetate (EEA), a furan-containing diterpenoid lactone and key component of Dioscorea bulbifera L., has been found to induce notable liver injury in mice through CYP3A-mediated metabolic activation to a cis -enedial reactive metabolite. EEA exposure at 25, 50, 100, or 200 µM triggered apoptosis in cultured mouse primary hepatocytes, evidenced by alterations in mitochondrial and endoplasmic reticulum (ER) pathway protein levels. Pretreatment with ketoconazole, vitamin C, glutathione ethyl ester, or 4-phenylbutyric acid effectively reduced the apoptotic ratio and restored the balance of mitochondrial and ER pathway protein levels impacted by EEA in primary hepatocytes. In contrast, pretreatment with L-buthionine sulfoximine exacerbated the apoptotic ratio and altered protein levels associated with the mitochondrial and ER pathways induced by EEA. In summary, metabolic activation, GSH depletion, and ROS are implicated in the induction of apoptosis. EEA triggered apoptosis in cultured primary hepatocytes via disruption of the crosstalk between the mitochondrial and ER pathways.
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Molecular Horticulture
·
2025
·Vol. 5
·期 1
·1-22
·
IF 8.1
Wang Zhiling,Yuan Yixin,Dong Rui,Zeng Ruihong,Zhao Xin,Xu Yanjie,Gao Junping,Hong Bo,Gu Zhaoyu
Floral fragrance is essential for the attraction of pollinators and responses to biotic and abiotic stresses. It also enhances the quality and economic value of plants. Phytohormones, acting as key signaling molecules, are crucial roles in regulating plant growth and development. However, the molecular mechanisms underlying the biosynthesis of fragrance-related volatiles and their crosstalk with other endogenous signals within plants remain largely unknown. Here, we identified a sesquiterpene synthase gene, CmEβFS , in chrysanthemum, which encodes a catalytic enzyme responsible for synthesizing the key fragrance-related compound ( E )-β-farnesene. We demonstrated that CmEβFS is negatively regulated by CmWRKY1, thereby inhibiting ( E )-β-farnesene biosynthesis. Furthermore, CmWRKY1 interacts with the salicylic acid (SA) receptor CmNPR3 to regulate SA-mediated CmEβFS transcription. Our findings reveal that SA regulates ( E )-β-farnesene biosynthesis by controlling CmEβFS expression via the CmWRKY1-CmNPR3 module during floral development. These findings enhanced our understanding of the mechanisms underlying SA-mediated regulation of volatile organic compounds (VOCs) biosynthesis and provided insights into improving floral fragrance.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2018
·
IF 5.667
Yachao Zhang,Yan Gao,Xueli Zhang,Huiming Wang,Tian Xia,Congcong Bian,Shuang Liang,Xiaozhi Tang,Xia Wang
The amplification of the electrochemical signal is crucial to improving the sensing performance of an immunosensor. In this study, a signal amplification strategy based on the co-catalysis of horseradish peroxidase (HRP) and nanoporous gold (NPG) was used to fabricate an electrochemical immunosensor for the determination of Hepatitis B e antigen (HBeAg). For the resulting immunosensor, HRP catalyzed catechol and thus served as a signal label of secondary antibody. NPG with unique properties was selected as a carrier for capture antibody immobilization. Further, NPG had an efficient electrocatalytic activity towards catechol (the substrate of HRP), which thus significantly enhanced the electrochemical signal produced by the HRP-labeled secondary antibody. Based on the co-catalysis of HRP and NPG, the immunosensor exhibited a good linear relationship between peak current density and HBeAg concentration in a wide HBeAg detection range from 1 pg mL −1 to 1 ng mL −1 with a high sensitivity of 23.51 μA mL ng −1 cm −2 as well as a low detection limit of 0.064 pg mL −1 (S/N = 3). Additionally, the immunosensor presented a strong anti-interference capability against human serum, human serum/dopamine, human serum/tryptophan, human serum/NO 2 − , human serum/D-glucose, and human serum/IgG. For the detection of HBeAg in human serum, the concentrations detected by the immunosensor were in good agreement with the standard concentrations that added in the human serum samples. These unique properties potentially make the proposed immunosensor a good choice for HBeAg detection.
研究领域:
生物医学工程
·
分析化学
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TALANTA
·
2025
·
IF 6.1
Luyang Zhao,Yang Song,Guoyang Xie,Hengyi Xu
A colorimetric assay based on the Fe/Al bimetallic organic framework NH 2 -MIL-53(Fe, Al) was developed for the sensitive detection of Escherichia coli O157:H7 ( E. coli O157:H7), a critical pathogen threatening food safety. The framework’s high specific surface area facilitated efficient antibody immobilization, whereas the incorporation of Al 3+ enhanced electron transfer between Fe 2+ /Fe 3+ , thereby significantly boosting peroxidase activity. The optimized NH 2 -MIL-53(Fe, Al) exhibited 1.4-fold and 4.9-fold higher relative absorbance than NH 2 -MIL-53(Fe) and NH 2 -MIL-53(Al), respectively. And it demonstrated 40-fold and 2-fold greater affinity for TMB and H 2 O 2 , respectively, compared to the natural enzyme. By integrating a dual-recognition system based on antibody and aptamer, the method enabled rapid detection with a limit of detection of 10 1 CFU/mL in colorimetric mode. Its successful application in complex matrices, including lettuce, juice, pool water, and chocolate milk, had yielded satisfactory recovery and precision, confirming its promising potential for food safety monitoring.
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CELLULOSE
·
2022
·Vol. 29
·期 8
·4661-4671
·
IF 6.123
Li Zhen,Wang Feifei,Liu Lin,Liu Yixin,Liu Jikai,Chen Xinxin,Yao Juming
Flexible wearable electronic textiles (E-textiles) are predicted to apply in the intelligence management of physical training for automatic, intelligent, and scientific health management. Recently, printing electronic is one of the attractive processes for the large-scale manufacturing of patterned E-textiles. However, it is an enormous challenge that achieve sensing functionality without sacrificing the original performance of fabric. Herein, we proposed a new scalable aerodynamic assisted screen print technology to develop highly sensitive, breathable, and durable electronic textiles via the integration of graphene ink. Briefly, stable graphene ink was fabricated based on the exfoliation and dispersion of cellulose/PEDOT:PSS solution, and directly screen printed on spandex/cotton blend fabric (SCBF) with the assisting of airflow pressure. The as-prepared ink infiltrated and wrapped along the fiber surface by aerodynamic assisted screen printing instead of filling fabric inter-fibers, endowing the SCBF with conductivity (82.16 Ω/sq), flexibility and breathability. Consequently, the acquired E-textile exhibited superior air permeability (38.5 L·m 2 /s), washing durability (> 50 cycles), excellent sensitivity (GF = 36), strain sensing performance and stability (> 9000 cycles). Finally, a monitoring smart garment has been demonstrated to show the potential of a large-scale E-textile for physical training or health management. Graphical abstract
研究领域:
材料科学
·
电子工程
·
智能纺织品
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危险品化学品经营许可证（带存储）