PLASMA CHEMISTRY AND PLASMA PROCESSING
·
2023
·
IF 3.6
Ma Zhipeng,Wang Hua,Wang Chunxia,Chen Yujie
Developing antibacterial materials is an efficient way to reduce the risk of harmful microorganism to human body. As a kind of popular textiles, cotton fabric (CF) is easy to breed microorganism and it is necessary to render it with biocidal effect. In this work, a water-soluble N-halamine precursor, (E)-1-(4-(allyloxy)phenyl)-N-(2-(piperazin-1-yl)ethyl)methanimine (APPEM), was synthesized and grafted onto cotton fabric through an argon plasma-induced grafting polymerization process. Afterward, the grafted cotton fabric was exposed to dilute sodium hypochlorite solution to change N–H bond into N–Cl bond and then the antibacterial cotton fabric (CF-APPEM-Cl) was obtained. The treated cotton fabric presented considerable biocidal efficacy and stability against UV light, washing, and storage. Escherichia coli (6.63 logs) and Staphylococcus aureus (6.44 logs) could be effectively inactivated within 60 min. Also, the oxidative chlorine on the fabric recovered over 76.9 and 81.5% after UV irradiation for 24 h and 50 washing cycles, respectively. And the oxidative chlorine remained 85% after 30 days of storage. Meanwhile, the mechanical properties of cotton fabric were hardly affected by this antibacterial treatment. This work provides a simple and efficient way to prepare antibacterial cotton fabric with high performance, which might be helpful to promote the development of antibacterial textiles.
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Nano Research
·
2023
·
IF 9.9
Tang Jie,Sun Shengjun,He Xun,Zhang Hui,Yang Chaoxin,Zhang Min,Yue Meng,Wang Hefeng,Sun Yuntong,Luo Yonglan,Alfaifi Sulaiman,Farouk Asmaa,Hamdy Mohamed S.,Sun Xuping,Wang Huiqing,Ying Binwu
The development of highly efficient and durable oxygen evolution reaction (OER) catalysts for seawater electrolysis is of great importance for applications. Here, an amorphous FeMoO 4 nanorod array on Ni foam is reported as a highly active OER electrocatalyst in alkaline seawater, requiring only overpotentials of 303 and 332 mV to achieve 100 and 300 mA·cm −2 , respectively. Moreover, it shows strong long-term electrochemical durability for at least 50 h.
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NPG Asia Materials
·
2023
·Vol. 15
·期 1
·1-8
·
IF 9.7
Wen Zhixuan,Zhou Teng,Xu Qian,Chen Weipeng,Xin Weiwen,Kong Xiang-Yu,Jiang Lei
Shellfish with rigid shells prevent damage to their delicate internal cores, and their soft bonding muscles drive the opening and closing of the shells. This synergism of rigid and soft materials provides shellfish with unique environmental adaptation. Inspired by the structural characteristics of mussels, a riveting layer was introduced into hydrogel-plastic hybrids for bonding hydrogel networks and plastic substrates. The bonding strength of the hydrogel on the polypropylene (PP) substrate was approximately 1.52 MPa, and the interface toughness reached 1450 J m −2 . Furthermore, the integration of plastics and microscale hydrogels, as well as abscised or prefabricated hydrogels, could also be fabricated through the same process. By using this strategy, a hydrogel-plastic hybrid-based device with temperature responsiveness and scratch resistance was fabricated and could mimic the basic activities of mussels. This work improves the functional materials used in programmable engineering systems and could facilitate the construction of intelligent robots.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2023
·Vol. 34
·期 23
·1-12
·
IF 2.8
Tian Lanlan,Hou Ruiting,Wang Shaozheng,Yu Ping,Li Yule,Chen Qingming,Zhang Hui
Perovskite manganite La 1 − x Ca x MnO 3 holds promising for uncooling infrared bolometers and magnetic sensors applications due to its unique properties such as metal insulator transition and colossal magnetoresistance. However, obtaining large temperature coefficient of resistance (TCR) value and magnetoresistance (MR) value in the temperature range close to room temperature remains a huge challenge. The dispersant can improve the agglomeration of particles in the precursor during the preparation of such ceramic materials, so that the uniformity of the samples is higher. In this study, we compare the effects of dispersants sodium dodecylbenzene sulfonate (SDBS) content on the structure, morphology, and electrical transport properties of La 0.67 Ca 0.33 MnO 3 (LCMO). We found that the ceramics with appropriate addition of SDBS possess higher density and larger grain size. Appropriate addition of SDBS can significantly improve the TCR and MR of the ceramics. The peak TCR reached 28.8%·K −1 ( x = 2%), and the peak MR reached 57.6% ( x = 4%). Our findings can promote the potential application of this material in infrared detect and magnetic sensors.
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APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
·
2023
·Vol. 107
·期 18
·5727-5737
·
IF 5
Ye Ru-Yi,Song Juan,Zhang Zhi-Jun,Yu Hui-Lei
Abstract Cytochrome P450 monooxygenases CYP120As are the unique non-membrane P450s, which are extensively involved in retinoid biodegradation. As the O -functionalized 1,3,3-trimethylcyclohex-1-ene moiety exists in many bioactive compounds which could only be catalyzed by Class II P450s, exploration of the catalytic repertoire of CYP120As is therefore highly attractive. However, up to date, only one bacteriogenic candidate (CYP120A1) was demonstrated for the hydroxylation of C16 and C17 of retinoic acid, by utilizing the integral membrane protein cytochrome P450 reductase redox partner for the electron transfer. Herein, we provided an efficient prokaryotic functional expression system of CYP120As in E. coli by expression of the CYP120A1 coupled with several reductase partners. Fusion redox partners to the C -terminal of the heme-domain are also working on other CYP120A members. Among them, the fusion protein of CYP120A29 and FAD/FMN reductase from Bacillus megaterium P450 BM3 (CYP101A2) showed the highest expression level. Based on the available translational fusion systems, the regioselectivity and the substrate scope of the CYP120As have also been explored. This work represents a good starting point for further expanding the catalytic potential of CYP120 family. Key Points • Characterization of CYP120As in E. coli is firstly achieved by constructing fusion proteins. • The feasibility of three P450 reductase domains to CYP120As was evaluated. • Hydroxylated products of retinoic acid by six CYP120As were sorted and analyzed. Graphical Abstract
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JOURNAL OF MATERIALS RESEARCH
·
2023
·Vol. 38
·期 15
·3791-3800
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IF 2.7
Tong Jinling,Yang Dongxu,Liu Xingmin,Lu Shaowei,Wang Jijie,Zheng Boxiong,Zhao Zihan,Song Yutong
Lightweight flexible composite films are widely used in the field of smart and wearable devices due to efficient electromagnetic interference (EMI) shielding effectiveness in the wide frequency domain and excellent mechanical properties. Herein, the CNTs@MXene composite films with excellent mechanical properties and EMI effectiveness were prepared by electrophoretic deposition method on carbon nanotubes (CNTs) substrate. By optimizing the experimental parameters, the optimal deposition time was determined to be 15 min. Meanwhile, the mechanical properties of the 40 μm composite films were the best and the tensile strength reached about 29.2 MPa. Moreover, the composite films with the same thickness showed excellent electromagnetic shielding effects of 69.02 dB and 77.32 dB in X-band and P-band, respectively. The CNTs@MXene composite films showed excellent EMI shielding effectiveness and mechanical properties. Therefore, the composite films showed great advantages and potentials in the application of smart and wearable devices. Graphical abstract
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MICROCHIMICA ACTA
·
2023
·Vol. 190
·期 8
·1-8
·
IF 5.7
Li Dawei,Ren Yaofei,Chen Ruoyang,Wu Haoyu,Zhuang Shaoyong,Zhang Ming
A spiral interdigitated MXene–assisted field effect transistor (SiMFETs) was proposed for determination of IL-6 in patients with kidney transplantation infection. Our SiMFETs demonstrated enhanced IL-6 detection range of 10 fg/mL–100 ng/mL due to the combination of optimized transistor’s structure and semiconducting nanocomposites. Specifically, on one hand, MXene-based field effect transistor drastically amplified the amperometric signal for determination of IL-6; on the other hand, the multiple spiral structure of interdigitated drain-source architecture improved the transconductance of FET biosensor. The developed SiMFETs biosensor demonstrated satisfactory stability for 2 months, and favorable reproducibility and selectivity against other biochemical interferences. The SiMFETs biosensor exhibited acceptable correlation coefficient ( R 2 =0.955) in quantification of clinical biosamples. The sensor successfully distinguished the infected patients from the health control with enhanced AUC of 0.939 (sensitivity of 91.7%, specificity of 86.7%). Those merits introduced here may pave an alternative strategy for transistor-based biosensor in point-of-care clinic applications. Graphical Abstract
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BIOPROCESS AND BIOSYSTEMS ENGINEERING
·
2023
·Vol. 46
·期 9
·1293-1302
·
IF 3.8
Duan Zhiwen,Wang Yaowu,Ouyang Bin,Wang Pu
Ionic liquids (ILs) which synthesized from bio-renewable materials have recently attracted much attention for their applications in biocatalysis. Ethyl ( R )-3-hydroxybutyrate (( R )-EHB) as a versatile chiral intermediate is of great interest in pharmaceutical synthesis. This study focuses on evaluating the performances of choline chloride (ChCl)-based and tetramethylammonium (TMA)-based neoteric ILs in the efficient synthesis of ( R )-EHB via the bioreduction of ethyl acetoacetate (EAA) at high substrate loading by recombinant Escherichia coli cells. It was found that choline chloride/glutathione (ChCl/GSH, molar ratio 1:1) and tetramethylammonium/cysteine ([TMA][Cys], molar ratio 1:1) as eco-friendly ILs not only enhanced the solubility of water-insoluble EAA in the aqueous buffer system, but also appropriately improved the membrane permeability of recombinant E. coli cells, thus boosting catalytic reduction efficiency of EAA to ( R )-EHB. In the developed ChCl/GSH- or [TMA][Cys]-buffer systems, the space-time yields of ( R )-EHB achieved 754.9 g/L/d and 726.3 g/L/d, respectively, which are much higher than neat aqueous buffer system (537.2 g/L/d space-time yield). Meanwhile, positive results have also been demonstrated in the bioreduction of other prochiral ketones in the established IL-buffer systems. This work exhibits an efficient bioprocess for ( R )-EHB synthesis under 325 g/L (2.5 M) substrate loading, and provides promising ChCl/GSH- and [TMA][Cys]-buffer systems employed in the biocatalysis for hydrophobic substrate.
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Journal of Orthopaedic Surgery and Research
·
2023
·Vol. 18
·期 1
·1-15
·
IF 2.6
Sun Kai,Xue Yuman,Zhang Xin,Li Xiaodong,Zhao Jun,Xu Xilin,Zhang Xiaofeng,Yang Fubiao
Background The impaired blood supply to the bones is an important pathological feature of steroid-induced osteonecrosis of the femoral head (SIONFH). Danshen is a Chinese herb that shows therapeutic effects on SIONFH, but the effects of one of its major bioactive constituents, Tanshinone I (TsI), on SIONFH remain unknown. Here, we evaluated the effects of TsI on SIONFH, particularly focusing on its effects on angiogenesis, in in vivo and in vitro research. Methods SIONFH was induced in Sprague–Dawley rats by an intramuscular injection of methylprednisolone (40 mg/kg) in combination with an intraperitoneal injection of lipopolysaccharide (20 μg/kg). Morphological alterations of the femoral head were observed by dual-energy X-ray absorptiometry and HE staining. Western blot, qRT-PCR, and immunohistochemical/immunofluorescence staining were used to determine gene expression. Results TsI (10 mg/kg) alleviated bone loss and rescued the expression of angiogenesis-related molecules (CD31, VWF, VEGF, and VEGFR2) in the femoral heads of SIONFH rats. Notably, TsI rescued the down-regulated expression of SRY-box transcription factor 11 (SOX11) in CD31 + endothelial cells in the femoral heads of SIONFH rats. In vitro studies showed that TsI preserved the dexamethasone-harmed angiogenic property (migration and tube formation) of human umbilical vein cells (EA.hy926), suppressed dexamethasone-induced cell apoptosis, reduced pro-apoptotic proteins (cytosolic cytochrome C, Bax, and caspase 3/9) and increased anti-apoptotic protein Bcl-2, whereas silencing of SOX11 reversed these beneficial effects. Conclusions This study demonstrates that TsI alleviates SIONFH and promotes angiogenesis by regulating SOX11 expression. Our work would provide new evidence for the application of TsI to treat SIONFH. Graphical Abstract
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APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
·
2023
·Vol. 107
·期 16
·5079-5094
·
IF 5
Ji Mingyue,Gong Jiangang,Tian Yiling,Ao Changwei,Li Yue,Tan Jianxin,Du Guoqiang
Abstract In this study, three kinds of wines separately made from mulberry (MW), grape (GW), or mulberry/grape (MGW) were developed and their enological parameters, sensory scores, volatile components, and microbiota were investigated and compared. Contrary to the order of residual sugar and acidity of the three kinds of wines, the order of alcohol content from high to low is GW, MW, and MGW. A total of 60 volatile components (VCs), including esters (17), alcohols (12), acids (6), aldehydes (7), ketones (3), alkenes (3), amines (3), alkanes (4), pyrazines (2), benzene (1), sulfide (1), and thiazole (1), were identified by gas chromatography-ion mobility spectrometer (GC-IMS). The fingerprint of VCs and principal component analysis revealed that the volatile profiles of MGW and GW were more similar in comparison to that of MW and were significantly correlated with the mass ratio of mulberry to grape. Lactobacillus , Weissella , Pantoea , Leuconostoc , Lactococcus , Paenibacillus , Pediococcus , and Saccharomyces were identified as the main microflora at the genus level shared by the MW, MGW, and GW, suggesting that the heterolactic bacteria may contribute more to the high content of volatile acids in MW and MGW. The heatmap of core microbiota and main VCs of MW, MGW, and GW suggested the complicated and significant correlation between them. The above data implied that the volatile profiles were more closely related to the raw materials of winemaking and markedly affected by the fermentation microorganisms. This study provides references for evaluation and characterization of MGW and MW and improvement of MGW and MW winemaking process. Key points
• Fruit wine enological parameters, volatile profile, and microbiota were compared.
• Sixty volatile compounds were identified by GC-IMS in three types of fruit wines.
• Winemaking materials and microbiota affect volatile profiles of the fruit wines.
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AMINO ACIDS
·
2023
·Vol. 55
·期 9
·1189-1200
·
IF 3.5
Hussain Ahad,Xie Li,Deng Guozhe,Kang Xuejun
Amino acids not only play a vital role in the synthesis of biological molecules such as proteins in cancer malignant cells, they are also essential metabolites for immune cell activation and antitumor effects in the tumor microenvironment. The abnormal changes in amino acid metabolism are closely related to the occurrence and development of tumors and immunity. Intestinal microorganisms play an essential role in amino acid metabolism, and tryptophan and its intestinal microbial metabolites are typical representatives. However, it is known that the cyclic amino acid profile is affected by specific cancer types, so relevant studies mainly focus on one type of cancer and rarely study different cancer forms at the same time. The objective of this study was to examine the PFAA profile of five cancer patients and the characteristics of tryptophan intestinal microbial metabolites to determine whether there are general amino acid changes across tumors. Plasma samples were collected from esophageal ( n = 53), lung ( n = 73), colorectal ( n = 94), gastric ( n = 55), breast cancer ( n = 25), and healthy control (HC) ( n = 139) subjects. PFAA profile and tryptophan metabolites were measured, and their perioperative changes were examined using high-performance liquid chromatography. Univariate analysis revealed significant differences between cancer patients and HC. Furthermore, multivariate analysis discriminated cancer patients from HC. Regression diagnosis models were established for each cancer group using differential amino acids from univariate analysis. Receiver-operating characteristic analysis was applied to evaluate these diagnosis models. Finally, GABA, arginine, tryptophan, taurine, glutamic acid, and melatonin showed common alterations across all types of cancer patients. Metabolic pathway analysis shows that the most significant enrichment pathways were tryptophan, arginine, and proline metabolism. This study provides evidence that common alterations of the metabolites mentioned above suggest their role in the pathogenesis of each cancer patient. It was suggested that multivariate models based on PFAA profiles and tryptophan metabolites might be applicable in the screening of cancer patients.
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Journal of Central South University
·
2023
·Vol. 30
·期 10
·3248-3259
·
IF 4.4
Zhang Wen,Liu Ye,Ye Zhong-qiang,Yang Min,Luo Qi,Dai Jing,Wang Qian-fu,Liu Li
Potassium-ion batteries (PIBs) are regarded as one of the alternatives to lithium-ion batteries due to the vast potassium reserves in nature and low potential of K + /K. Therefore, in this work, we successfully synthesized porous nitrogen-doped FeP/C nanofibers (P-FeP/C-N NFs), a novel electrode material for PIBs, via simple electrospinning and subsequent calcination treatment, in which polyacrylonitrile (PAN) and polymethylmethacrylate (PMMA) are used as nitrogen source and pore-forming agent, respectively. The introduction of nitrogen improves the conductivity of the material, and the formation of a porous structure increases the specific surface area. More importantly, when the P-FeP/C-N NFs were used as electrode for potassium ion batteries, they exhibit excellent electrochemical performance. The P-FeP/C-N NFs electrode exhibits a discharge capacity of 274.2 mA·h/g at 100 mA/g after 250 cycles and 171.3 mA·h/g at 1000 mA/g after 300 cycles. Even at 5000 mA/g, it displays a high discharge capacity of 150.1 mA·h/g. These findings indicate that the P-FeP/C-N NFs are expected to be a candidate of anode materials for potassium ion batteries.
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