Food Bioscience
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2025
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IF 5.9
Dan Wang,Xiao-Tong Zhai,Na-Na Wu,Jun Li,Ming Zhao,Na Zhang,Bin Tan
The impact of solid-state fermentation by Lactiplantibacillus plantarum CICC 21793 and Lacticaseibacillus rhamnosus CICC 21773 on the structural and functional properties of rice bran dietary fiber (DF) was investigated. Optimal extraction conditions for soluble dietary fiber (SDF) were determined through single-factor and orthogonal tests, achieving a maximum yield of 12.05% for fermented SDF (SSDF). After fermentation, SSDF exhibited a rough, porous surface, whereas fermented insoluble dietary fiber (SIDF) displayed increased folds and concave contours. Although the spectral characteristics of DF remained largely unchanged, the monosaccharide composition was altered. The particle size of DF decreased, the crystal structure exhibited increased disorder, and thermal stability decreased as a result of fermentation. Furthermore, the physical and chemical properties of SIDF were improved as follows: water swelling capacity (2.48 mL/g), oil holding capacity (7.44 g/g), and water holding capacity (7.47 g/g). The adsorption properties of SSDF were improved as follows: cation exchange capacity (1237.74 mmol/g), cholesterol adsorption capacity was determined to be 3.61 mg/g under gastric conditions and 4.68 mg/g under intestinal conditions, nitrite ion adsorption capacity (3.38 mg/g). Both fermented SDF and IDF displayed enhanced antioxidant activity, adsorption properties, and effective hypolipidemic and hypoglycemic effects. Solid-state fermentation with Lactiplantibacillus plantarum CICC 21793 and Lacticaseibacillus rhamnosus CICC 21773 effectively modifies DF.
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Materials Today Chemistry
·
2025
·
IF 6.7
Yanzhi Yang,Zhengyi Zhao,Xin Yu,Minghong Long,Zhiyong Yan,Xuechun Xiao
ABO 3 -type perovskite oxides have found extensive applications in various fields electrocatalysis and photocatalysis owing to their remarkable advantages such as facile synthesis, low cost, and high thermal stability. As catalytic materials, perovskites possess the ability to catalyze both oxidation and reduction reactions. The thermal decomposition process of AP involves a significant number of redox reactions. However, the utilization of perovskite catalysts for AP decomposition has received relatively limited research attention. In this study, LaMO 3 (M = Co, Fe, Al) perovskite catalysts were synthesized through the sol-gel method. The aim was to explore the disparities in band gap values and electrical conductivity caused by the substitution of different B-site elements. Subsequently, based on these properties, the catalytic mechanisms of AP thermal decomposition were analyzed. The results revealed that LaCoO 3 exhibits exceptional catalytic performance. The addition of LaCoO 3 significantly decreased the decomposition temperature of AP from 473.3 °C to 323.0 °C, lowered the activation energy from 465.5 kJ mol −1 to 182.9 kJ mol −1 , and increased the heat release from 88.8 J/g to 942.5 J/g. A series of characterizations, including XPS, EPR, DFT, EIS and UV–vis were performed on the three catalysts. The results demonstrate that perovskite catalytic materials with a narrower band gap and a higher concentration of oxygen vacancies exhibit superior electron transport efficiency and significantly enhanced thermal catalytic performance toward AP, thereby elucidating the underlying mechanism responsible for the differences in catalytic activity among the materials.
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JOURNAL OF MEMBRANE SCIENCE
·
2025
·
IF 9
Xueting Li,Lin Wang,Yuanhui Tang,Huanhuan Wu,Lixin Yu,Xiaolin Wang,Yakai Lin
The safety and efficacy of low molecular weight dextran (LMWD) in pharmaceutical applications critically depend on the uniformity of its molecular weight distribution. In this study, a novel ultrafiltration (UF) modified membrane was prepared by UV-induced surface graft polymerization on the commercial polysulfone (PSf) membrane for the efficient separation of LMWD. Benzophenone (BP) was employed as the photoinitiator to initiate the grafting polymerization of the difunctional monomer divinylbenzene (DVB). During the polymerization process, DVB underwent both chain homopolymerization and intermolecular crosslinking, forming a dense three-dimensional network that significantly reduced the membrane pore size and enhanced its separation selectivity. The optimized PSf-g-DVB membrane, prepared with a concentration of 2 wt% DVB and 1 wt% BP, achieved over 85% rejection of 20 kDa dextran, while the rejection rate for 2 kDa dextran was only 0.2%, with a water permeance of 5.4 L·m -2 ·h -1 ·bar -1 . Furthermore, the membrane demonstrated excellent stability, maintaining a rejection difference of 70% between the two different molecular weights of dextrans after 48 hours of continuous filtration. In filtration experiments with mixed dextran solutions, the PSf-g-DVB membrane exhibited a separation factor as high as 11.5, nearly 9 times higher than that of the commercial PSf membrane, further confirming the feasibility of UV-grafted membrane modification for the selective sieving of LMWD, and offering a green and effective approach for pharmaceutical-grade dextran purification.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Xun Xu,Xiaojie Ji,Yuankang Bao,Luliang Liao,Ping Li,Hao Zhang,Yaqiang Xie,Shuwang Duo
The efficiency of peroxymonosulfate (PMS)-based advanced oxidation processes for eliminating persistent organic pollutants is significantly limited by high residual contaminant levels and complex aqueous matrices. Developing robust and environmentally benign catalysts that can activate PMS while resisting matrix interference is therefore critical for practical wastewater treatment. Herein, we present a porous Co Mn bimetallic oxide (p-Co 1.2 Mn 1.8 O 4 ) integrating dual-metal active sites with mesoporous nanoconfinement, which simultaneously enhances PMS adsorption energy and enriches interfacial pollutant concentration. A direct electron transfer process (ETP) was enabled between the tetracycline (TC) pollutant (as an electron donor) and surface-bound PMS complexes (PMS ⁎ , as an electron acceptor) on p-Co 1.2 Mn 1.8 O 4 . This synergy enables a novelty nonradical electron-transfer pathway (ETP) between tetracycline (electron donor) and surface-bound PMS complexes (PMS ⁎ , electron acceptor), achieved nearly 100 % removal of TC within 15 min and increasing the pseudo-first-order constant from 0.121 to 0.348 min −1 over the non-porous sample. The p-Co 1.2 Mn 1.8 O 4 /PMS system also efficiently degrades binary pollutants and maintains high activity under varied pH, temperature, and complex matrices. This work provides mechanistic insights into how multi-scale structural synergy—at both atomic and nanoscale levels—in bimetallic oxide catalysts regulates PMS activation, offering a promising platform for practical water purification.
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JOM
·
2025
·
IF 2.3
Zhang Kaifei,Sun Youping,He Jiangmei,Li Wangzhen,Liu Chenglong,Li Qian
This study investigated the effects of different homogenization treatments on the microstructure, mechanical properties, and in vitro degradation behavior of an Mg-2Zn-0.1Ca alloy. The results indicated that homogenization significantly increased the alloy's grain size, reaching 1327.5 μm after 400°C/12-h treatment, an approximately 38.8% increase compared to 956.27 μm for the as-cast alloy. Regarding mechanical properties, homogenization markedly improved the tensile elongation, with the highest value of 20.8% achieved after 400/12-h treatment, representing an approximately 95% increase from the as-cast alloy's 10.66%. Conversely, the ultimate tensile strength (UTS) peaked at 138.53 MPa under the 350°C/12-h condition, an approximately 13% improvement over the as-cast state. In terms of in vitro degradation, homogenized alloys exhibited higher degradation rates than as-cast samples. Notably, the 400°C/12-h homogenization treatment resulted in the fastest corrosion rate, approximately 1.68 times higher than that of the as-cast alloy.
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JOM
·
2025
·
IF 2.3
Zhu Yongpeng,Zhao Yuming,Liu Jinhui,Xu Xin,Sheng Kaifan,Chen Chuanyang,Li Xiaofeng,Tang Weineng,Gao Shenghui,Zhang Zexue,Gao Chunyun,Liu Qiang,Zhang Shaojun
This study investigates the chemical composition, particle size distribution, magnetic components, and alkaline sources of magnesium slag to enhance its utilization as a solid waste. Comprehensive characterization was achieved through multiple techniques, including graded sieving (16–150 mesh), magnetic separation, XRD, SEM/EDS, and EDTA titration, which systematically revealed the physicochemical properties of the slag. The sieving results indicate that β-Ca 2 SiO 4 is the dominant phase in the fraction larger than 1180 μm (11.55%), while γ-Ca 2 SiO 4 predominates in the fraction smaller than 180 μm (56.53%). The white particles in the magnesium slag originate from partially reacted dolime, whereas the black particles arise from incompletely reduced zones within the pellets. Magnetic separation analysis shows that coarse particles (> 1 mm) in the magnetic fraction mainly come from high-temperature oxidized spalls from the reduction reactor, while fine powders (< 200 μm) consist primarily of ferrosilicon (Fe x Si y ). Titration results demonstrate that the free calcium oxide (f-CaO) content accounts for 6.75 ± 0.1% by mass and serves as the primary contributor to the slag’s alkalinity. Through qualitative and quantitative analysis, this study elucidates the relationship between the physicochemical properties of magnesium slag and its resource utilization, providing key scientific evidence and practical guidance for high-value applications.
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MATERIALS & DESIGN
·
2025
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IF 7.9
Jiaxiang Liu,Linping He,Da Li,Xin Wang,Lin Liu,Jianqing Lin,Kaiyan Huang
Medicine counterfeiting is a serious issue worldwide, involving potentially devastating health repercussions. Optical technologies have emerged as a promising solution for anti-counterfeiting tagging of pharmaceuticals. However, conventional systems relying on human-visible authentication modes remain susceptible to trial-and-error decryption, posing security vulnerabilities. To address this limitation, we have developed a novel multi-mode phosphor, Mg 3 Y 2 Ge 3 O 12 :Bi 3+ /Pr 3+ /Yb 3+ /Er 3+ (MYGBP-Yb/Er), featuring distinctive visible and non-visible spectral characteristics for high-security medicine anti-counterfeiting. This material simultaneously demonstrates green up-conversion luminescence (UCL) under 980 nm excitation, red down-shifting luminescence (DSL) upon UV stimulation, and persistent luminescence (PersL) spanning UV to visible spectral regions after UV excitation. The UV PersL component, while completely invisible to human vision, serves as a robust hidden authentication layer that can only be revealed through specialized detection using bandpass filters coupled with charge-coupled device (CCD) cameras. This unique combination of visible and non-visible luminescent features enables the realization of information protection that resists conventional counterfeiting attempts. In addition, changing the doping elements (such as Tb 3+ or Ho 3+ ) can achieve the regulation of the luminescence performance. Ultimately, we establish a sophisticated multi-level medicine verification system based on these phosphors, enhancing protection against forgery through its integrated visible authentication and CCD-readable covert security features.
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JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
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2025
·Vol. 40
·期 5
·1231-1238
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IF 1.1
Yang Suohui,Zhang Shiquan,Zhang Ruizhi,Zhang Jian,Shen Qiang
The surface of MoSi 2 -SiB 6 / phenolic resin matrix composites was modified by mica, and the thermal oxidation behavior of the composites and the mechanical properties of the pyrolysis products were studied. The results showed that the mica improved the thermal properties of the composites, the thermal expansion coefficient decreased, and the liquid phase formation caused the composites to shrink and increase the density. The flexural strength of mica surface modified composites not only increased to 78.64 MPa after thermal treatment at 800–1 200 °C, but reached 83.02 MPa after high temperature treatment at 1 400 °C. The improvement of the mechanical properties of the residual product benefits from the formation of high temperature ceramic phases such as Mo 2 C and MoB, and the improvement of the shear strength of the composites by the mica. The shear strength of MBm5-2 at room temperature reached 33.08 MPa, indicating that the improvement of the interlayer properties of the composites further improved its mechanical properties.
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CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Chengyun Zhang,Shuangkang Ge,Huahao Chen,Tenglong Zhang,Ruobin Zhang,Qingyan Han,Wei Gao,Yongkai Wang,Mingdi Zhang,Jun Dong
Next-generation optical data storage demands materials that support reversible and high-contrast luminescence switching across multiple wavelengths. In this study, we developed hybrid systems integrating rare-earth-doped nanocrystals (Eu 3+ or Yb 3+ /Er 3+ ) with tunable silver nano-islands films designed to exhibit either narrowband or broadband plasmonic absorption. The plasmon-driven photothermal effect facilitates reversible phase transitions in the host matrix and enables efficient modulation of luminescence, demonstrating wavelength-selective switching with narrowband absorbers and broad-wavelength response with broadband absorbers. Notably, we achieved cross-wavelength optical information storage using near-infrared light (800/980 nm) for writing and visible light (532 nm) for reading. Finite element simulations provide insight into the photothermal mechanisms and spatial temperature distributions, indicating that narrowband absorption induces localized hot spots, while broadband absorption results in spatially distributed heating. This work establishes a material platform and mechanistic foundation for high-security optical storage, anti-counterfeiting technologies, and multiplexed photonic devices.
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MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Lina Yu,Xiaoqi Wang,Lili Yuan,Xin Chen,Hai Zhang,Caiyun Wang,Congying Shao
Tetracycline (TC) has been the focus of considerable public concern due to its potential to induce liver function abnormalities, renal damage, suppression of bone growth, and a range of human health hazards. Therefore, the accurate detection of trace amounts of TC is of particular importance. In this work, biomass-derived carbon dots (Fa-CDs) were successfully synthesized by a sustainable hydrothermal treatment of Fatsia japonica leaves (Fa). The chemical composition and structure of the Fa-CDs were comprehensively characterized via UV–vis, FL, FT-IR, TEM, and XPS. The obtained Fa-CDs maintained excellent photoluminescence properties and good stability. Notably, the Fa-CDs displayed a specific and ultrafast (approximately 10 s) response to TC, enabling the development of a label-free fluorescence sensor for rapid and environmentally sustainable TC detection. Mechanistic investigations revealed that the fluorescence quenching behavior in the sensing platform primarily involved static quenching coupled with the inner filter effect (IFE). The sensor exhibited outstanding analytical performance, demonstrating a wide linear dynamic range (0–80 μM, R 2 = 0.999) and an ultralow detection limit (26 nM). Real-sample analysis yielded excellent recovery rates (95.4 %–104.0 %), confirming both the practical utility of the Fa-CDs nanoprobes and the reliability of the developed fluorescence sensing platform. Moreover, smartphone-assisted visual screening of TC was successfully achieved in both solution-phase systems and paper-based platforms. This study developed an environmentally friendly, sustainable, and easy-to-implement synthesis strategy for CDs, successfully constructing a dual-mode detection platform for TC that integrates rapid fluorescence sensing and visual screening capabilities.
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MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Yanghong Dong,Qian Wang,Ying Zhang,Yaru Huang,Mingrong Cui,Xiaoqiang Chen
This study employed a choline chloride-acetic acid-based natural deep eutectic solvent (NADES-1) combined with ultrasound-assisted extraction to recover polyphenols and flavonoids from Hippophae gyantsensis leaves. The statistically validated optimal conditions included 32 % water content, 24:1 ( v / w ) liquid–solid ratio, and 53 °C extraction temperature. This three-parameter synergistic optimization approach maximized the yield of the target active compounds. Under these conditions, the yields reached 108.36 ± 0.11 mg gallic acid/g for total phenolics (TP) and 67.12 ± 0.53 mg rutin/g for total flavonoids (TF), with an antioxidant capacity of 82.5 ± 1.45 mg vitamin C equivalents/g, significantly outperforming conventional 60 % ethanol extraction. The purified NADES-1 extract demonstrated remarkable antioxidant activity: 2,2-Diphenyl-1-picrylhydrazyl (DPPH) IC 50 = 57.63 ± 1.38 μg/mL, Lipid Peroxidation (LPO) IC 50 = 53.57 ± 0.32 μg/mL, and antimicrobial effects: Minimum Inhibitory Concentration (MIC) against Escherichia coli = 0.63 mg/mL), surpassing those of ethanol-purified extracts. Pearson correlation analysis revealed strong positive associations between TP / TF contents and bioactivities, suggesting these compounds may serve as key contributors to the observed effects.
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WEAR
·
2025
·
IF 6.1
Jiajia Cen,Kai Chen,Qin Chen,Xinyue Zhang,Cunao Feng,Xiaowei Li,Dekun Zhang,Shirong Ge
The tribological performance of hip joint materials in the synovial fluid is substantially influenced by environmental factors. In this study, the tribological properties of polyether-ether-ketone (PEEK)-highly crosslinked polyethylene (XLPE) hip joint materials were investigated in composite synovial fluids with varying pH conditions, revealing the coupling mechanism between pH and composite synovial fluid components. The lubrication efficacy of the composite synovial fluid under physiological conditions was validated through a 2 million-cycle hip joint simulation test. Results indicated that the coefficient of friction (COF) decreased with the increasing pH, while the wear factor remained stable at pH = 7.5 and pH = 8.0 but decreased progressively at pH = 8.5. Notably, the Fluid C demonstrated significant pH sensitivity, reducing the wear factor by 89.12 % when pH increased from 8.0 to 8.5. Moreover, the results of the hip joint simulation tests were consistent with the sliding tribology tests. The component concentration regulated the lubrication efficiency, with amplified effects during long-term service. Hence, this study elucidated wear mechanisms in “soft-soft” hip joint materials under simulated physiological conditions and provided critical insights for predicting the lifespan of polymer-based artificial joints.
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