Foods
·
2026
·Vol. 15
·期 17
·2954
·
IF 6
Rongguang Yang,Luning Zhao,Ying Zhu,Yansheng Zhao,Juan Bai,Xiang Xiao
Polygonatum cyrtonemaHua polysaccharides (PCPs) are bioactive components with antioxidant and immunomodulatory properties. However, whether the polysaccharides derived from elderPolygonatum cyrtonemaexhibit superior health benefits remains unclear. This study systematically compared the in vitro fermentation characteristics, gut microbiota-modulating effects, and short-chain fatty acid (SCFA) production of PCPs extracted from three-year-old (TPP), five-year-old (FPP), and eight-year-old (EPP) plants using a human fecal fermentation model. The fermentation dynamics were evaluated by monitoring pH, OD600, and the consumption of total and reducing sugars, while the structural degradation and compositional differences in PCPs were tracked via molecular weight distribution and monosaccharide composition analysis. The results showed that all three PCPs were degraded and utilized by gut microbiota, accompanied by decreased pH, increased OD600, and enhanced antioxidant activities. High-throughput 16S rDNA sequencing revealed that, at the phylum level, all PCPs increased the Firmicutes/Bacteroidetes ratio. At the genus level, they reduced the abundance of harmful bacteria such asSutterellaand increased beneficial bacteria includingBifidobacteriumandMegasphaera. Furthermore, gas chromatography (GC) analysis demonstrated that, compared with FPP, TPP and EPP significantly promoted the production of SCFAs. In summary, this study indicates that the in vitro fermentation characteristics and prebiotic properties of PCPs vary with growth years, and a comprehensive evaluation suggests that three-year-oldPolygonatum cyrtonemaHua represents a promising raw material for the development of functional foods.
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WOOD SCIENCE AND TECHNOLOGY
·
2026
·Vol. 60
·期 5
·81
·
IF 3.2
Huang Changzhu,Zhu Yaqin,Luo Yilong,He Bin,Wu Yunfei,Zhang Chunmei,Duan Gaigai,Han Xiaoshuai,Zhou Rongfei,He Shuijian,Jiang Shaohua
Efficient CO 2 capture remains challenging due to limited adsorption capacity and slow kinetics of conventional materials. Herein, we report a strong–weak acid modulation strategy for the in situ growth mesoporous UiO-66-F 4 within the aligned carbonized wood channels, yielding a hierarchical MOF–carbon composite denoted as meso-UiO-66-F 4 @CP. Dual-acid regulation enables highly uniform and controlled MOF growth under environmentally friendly aqueous conditions, avoiding the use of toxic organic solvents and ensuring a sustainable synthesis route. This composite effectively combines the macroporous framework of carbonized wood with the intrinsic micropores and mesopores of UiO-66-F 4 , establishing a hierarchical pore network that significantly enhances CO 2 diffusion, mass transport, and overall adsorption efficiency. Furthermore, the introduction of fluorinated linkers strengthens dipole–quadrupole interactions, generating abundant high-affinity adsorption sites specifically tailored for CO 2 molecules. Under the present experimental conditions, meso-UiO-66-F 4 @CP exhibits a CO 2 uptake of 38 cm 3 g⁻ 1 (approximately 1.70 mmol g⁻ 1 ) at 298 K and 1 bar, together with a measured adsorption rate of 0.085 mmol g⁻ 1 min⁻ 1 . This work provides a sustainable strategy for constructing hierarchical MOF–carbon composites with tailored pore structures and surface chemistry for CO 2 capture applications.
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CHINESE JOURNAL OF POLYMER SCIENCE
·
2026
·
IF 4.6
Liu Guan-Jun,Yan Mei-Ling,Tian Zhen,Wang Lu,Yang Fan,Wang Rong-Guo
Hot pressing is widely used to tailor the structures and properties of polymer composites. However, how it drives structural evolution and thereby affects barrier, mechanical, and thermal properties remains insufficiently understood. In this work, graphene oxide-grafted carbon nanotube/polyamide 6 (GO- g -CNT/PA6) composites were subjected to hot pressing at different radial expansion ratios ( ε =0, 2, and 4) to investigate the flow-induced structural evolution and the resulting property changes. Scanning electron microscopy and transmission electron microscopy observations revealed that hot pressing promoted the rearrangement and preferential alignment of the hybrid nanofillers, while two-dimensional wide-angle X-ray diffraction confirmed the enhanced crystalline orientation after hot pressing. Differential scanning calorimetry showed increased crystallinity in both the neat PA6 and GO- g -CNT/PA6 composites. Representative positron annihilation lifetime spectroscopy analysis further indicated a reduction in the fractional free volume, whereas the characteristic size of individual free-volume holes remained nearly unchanged. The results indicate that the optimal hot-pressing condition is property-dependent. A moderate deformation at ε =2 is more favorable for improving the hydrogen barrier and tensile properties, whereas a stronger deformation at ε =4 is more effective in promoting in-plane heat transport. These findings establish a correlation between the processing, structural evolution, and multifunctional properties of GO- g -CNT/PA6 composites, providing guidance for the design of PA6-based liner materials for Type IV hydrogen storage vessels.
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ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2026
·
IF 4.1
Wu Zejun,Ji Meiyu,Feng Sizhang,Zhang Xichun,Gan Ning,Zhao Cheng,He Jincan
The overuse of enrofloxacin (ENR) in aquaculture poses significant threats to ecological security and food safety, generating an urgent demand for instrument-free on-site detection. Herein, a Listeria -templated Ag-Pt bimetallic nanozyme ( Listeria -Ag@Pt) was fabricated via a bacteria-templated in situ mineralization strategy. The intact bacterial template not only prevents nanoparticle aggregation to maximize peroxidase-like activity but also imparts inherent molecular recognition capability toward ENR without requiring antibodies or aptamers. The presence of ENR can enhance the catalytic efficiency of the nanozyme, significantly accelerating the oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB) by H 2 O 2 to produce blue oxTMB. Based on this target-enhanced chromogenic response, a colorimetric sensing platform was established, exhibiting a wide linear range of 0.0025–20 mg/L and a low limit of detection (LOD) of 0.8 ng/mL. The method afforded satisfactory recoveries of 92.7%–105% with relative standard deviations (RSDs) of 2.2%–7.3% in aquatic products. With advantages of cost-effectiveness, simplicity, and excellent anti-interference performance in complex matrices, this naked-eye detection strategy shows promising application prospect for on-site monitoring of ENR residues. Graphical abstract
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Microorganisms
·
2026
·Vol. 14
·期 8
·1814
·
IF 4.7
Huipeng Liu,Xining Geng,Yousi Fu
Pectin oligosaccharides have emerged as promising prebiotics whose biological activities are closely tied to their structural features, particularly monosaccharide composition. However, systematic experimental evidence regarding how different monosaccharide compositions collectively influence gut microbiota modulation, SCFA production, and the metabolomic responses of mixed pectin oligosaccharides remains limited. To address this gap, Pool-I (27.92% galacturonic acid, rich in neutral sugars including galactose, glucose, and arabinose) and Pool-II (98.73% galacturonic acid) were evaluated by comparison with inulin, a reference prebiotic, using an in vitro human fecal fermentation model. Microbial community structure, SCFA production, and metabolomic profiles were assessed at 12 h and 24 h via 16S rRNA gene sequencing, gas chromatography, and untargeted metabolomics, respectively. Inulin exhibited superior enrichment of Actinobacteria (predominantly Bifidobacterium ) and consistently higher total SCFA production (24.07 ± 0.25 mmol/L acetic acid at 24 h vs. 20.27 ± 0.28 and 20.53 ± 0.76 mmol/L for pectin oligosaccharides), particularly propionic and butyric acids. Although Pool-I and Pool-II yielded lower overall SCFA concentrations, they significantly enriched beneficial SCFA-producing genera (including Coprococcus_3 , Butyricicoccus , and Parabacteroides ) at 24 h. Metabolomic analysis revealed that Pool-I uniquely upregulated twenty-six differential metabolites ( VIP > 1, p < 0.05), including taurine ( VIP = 2.40, p < 0.001), L-proline ( VIP = 1.72, p = 0.015), and pantothenate ( VIP = 1.63, p < 0.001), while reducing uric acid ( VIP = 1.05, p < 0.001), whereas only two differential metabolites were identified for Pool-II. We conclude that monosaccharide composition is a key determinant of the prebiotic efficacy of pectin oligosaccharides: Pool-II selectively promotes SCFA-producing taxa, whereas Pool-I elicits broader metabolic regulation. These effects provide a theoretical foundation for developing pectin oligosaccharides as potential prebiotic candidates.
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npj Science of Food
·
2026
·
IF 9.7
Shi Xuening,Zhang Huiqian,Zheng Jingying,Wang Juan,Zhao Chao
Sterilization technologies for microorganisms in food are limited by safety and antibiotic residue concerns and resistance, creating an urgent need for novel sterilization methods. Photothermal conversion nanomaterials can rapidly convert near-infrared light into thermal energy, offering fast, efficient, and environmentally friendly sterilization, leading to their increasing application. Herein, we designed and prepared a composite multilayer photothermal nanomaterial (MCOF@Au@PEI NPs), integrating “capture-photothermal sterilization-separation and recycling” functions and achieving rapid and efficient sterilization. The material maintains high photothermal conversion efficiency even after multiple cycles and exhibits excellent biocompatibility. Using Escherichia coli and Staphylococcus aureus as model bacteria in milk and drinking water, the material achieves a 100% bacterial sterilization rate within 435 seconds under irradiation, equivalent to pasteurization. Moreover, the material exhibits potent destructive effects on bacterial biofilms, showing broad application prospects in developing novel nano-photothermal sterilization methods and antibiotic alternative therapies.
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npj Science of Food
·
2026
·
IF 9.7
Wang Juan,Li Xiang,Zhang Jing,Zhao Chao,Shi Xuening
Microbial Contamination serves as an important issue in dairy safety. CRISPR/Cas12a-based methods possess tremendous potential, but are limited by nucleic acid pretreatment and specialized operations. Herein, a photothermal nanomaterial-assisted enhanced One-Tube CRISPR/Cas12a system was established to detect S. typhimurium in milk . S. typhimurium was lysed through the photothermal effect to obtain genomic DNA. A multi-crRNA strategy enables rapid signal accumulation, and the whole system was integrated into a single tube via trehalose-based aqueous biphasic systems. The proposed method requires only one step of sample addition to achieve sensitive detection within 40 min, with an LOD of 10 CFU/mL, showing potential in application.
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MACROMOLECULES
·
2026
·
IF 5.7
Shijing Yan,Yingying Han,Meng Wu,Zhiwei Yang,Hui You,Weihua Xu,Jun Du,Cailiu Yin
The development of sustainable electronics demands materials that combine high performance with designed degradability, yet achieving this balance remains a challenge. Here, we demonstrate that systematically engineering the soft-segment molecular weight in fully degradable, biobased polyurethanes (PUs) unlocks a suite of tunable properties for high-performance pressure sensing. By varying poly(butylene adipate) (PBA) diol molecular weight in networks containing isosorbide and acid-cleavable hexahydrotriazine, we establish that longer PBA chains enhance soft-segment crystallinity and elongation (up to 978%), while an optimal intermediate molecular weight (2000 g/mol) yields the highest tensile strength (25.7 MPa) and excellent biocompatibility. This optimized PU exhibits robust shape-memory behavior (Rf > 98%) and undergoes controlled dual degradation: enzymatic (up to 50% mass loss in 6 weeks) and complete acid-triggered dissolution, enabling quantitative recovery of conductive carbon black filler. A microstructured composite sensor fabricated from this material achieves high sensitivity (15.32 kPa–1) with fast response/recovery and successfully monitors human motion. This work establishes molecular design rules for degradable PUs and provides a viable pathway toward sustainable, high-performance flexible electronics.
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ACS Catalysis
·
2026
·
IF 13.6
Weifeng Wang,Evgeny I. Vovk,Danyu Wang,Rongjia Du,Ningxujin Ding,Yanhui Gao,Qing Zhang,Yuzhen Li,Junyu Lang,Yong Yang
Thermo-photocatalytic overall water splitting has attracted considerable interest for utilizing solar energy. However, at elevated temperatures, the reaction rate is limited by inefficient contact between the catalyst and the vaporized water molecules. Herein, we report a catalyst (n-La-TiO2) with up to sixfold enhanced water splitting efficiency compared to that of pure TiO2 through loading La2O3 onto TiO2. TEM at the atomic level revealed that the La species were preferentially intercalated at the interfaces of fine TiO2 grains, forming sharp heterostructures of La2O3–TiO2. In situ characterization from XRD, XPS, and IR further unveiled an interface water stabilization mechanism through La(OH)3 formation and decomposition within the heterostructure of n-La-TiO2 at an elevated temperature. Additional density functional theory (DFT) calculations demonstrated that the built-in electric field of the La2O3–TiO2 heterostructure facilitated carrier transportation to the La interface layer toward a minimized energy barrier for the hydrogen evolution reaction (HER). The comprehensive mechanistic studies explained the highly active interface sites at high temperature. The final optimized 2-La-TiO2 catalyst achieved a H2 evolution rate of 35.92 μmol·gcat–1·h–1 at 400 °C without sacrificial agents. This study provides broader insights and ideas for the design and development of catalysts for the thermo-photocatalytic overall water splitting.
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MOLECULES
·
2026
·Vol. 31
·期 6
·1006
·
IF 5.1
Yiting He,Xiayu Zhu,Ajun Li,Shuyuan Lin,Bo Li,Songbin Liu,Xinyu Ye
CsPbBr3perovskite quantum dots (QDs) have attracted significant attention for optoelectronic applications owing to their outstanding optical properties, yet achieving controlled synthesis with high stability under mild conditions remains a challenge. The room-temperature synthesis of CsPbBr3perovskite quantum dots using a coprecipitation method is systematically investigated in this work, with an emphasis on how the structural and optical properties of the QDs are influenced by the Br/Pb ratio and OA/OAm ratio. The findings show that controlling the Br/Pb and OA/OAm ratios can effectively influence the size, crystalline phase, and surface passivation properties of CsPbBr3quantum dots. The photoluminescence peak shifts blue and the bandgap widens when the Br/Pb ratio rises due to a decrease in quantum dot size. This is mainly explained by more effective surface covering by Br−ions and increased quantum confinement effects. The resultant quantum dots demonstrate ideal optical performance at a Br/Pb ratio of 75 and an OA/OAm ratio of 1.5, with dense ligand coverage, superior defect passivation, and markedly improved stability under UV irradiation and in aqueous environments. Variations in the Br/Pb and OA/OAm ratios affect the binding configuration and coverage of ligands on the quantum dot surface, thereby influencing the relationship between non-radiative recombination and the quantum confinement effect. The LED fabricated with the as-synthesized high-performance quantum dots demonstrates a wide color gamut, covering 129.45% of the NTSC standard, indicating strong potential for display applications.
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Polymers
·
2026
·Vol. 18
·期 7
·860
·
IF 5.8
Yutong Cui,Xin Shu,Boyu Cui,Jiayan Ding,Wei Dai,Chunmao Yang,Weihong Wang
To address critical challenges in marine oil spill remediation, including limited penetration of high-viscosity crude oil and inefficient adsorbent recovery, it is imperative to develop environmentally friendly materials integrating high-efficiency adsorption, in situ viscosity reduction, and controllable recovery. In this study, a delignified corn pith (CPDL) with a three-dimensional porous structure was employed as a green matrix. Through constructing a Fe3O4/expansible graphite (EG)/polyvinylidene fluoride (PVDF) composite functional coating combined with silanization modification, a multifunctional biomass-based oil sorbent (Fe3O4/EG/PVDF-CPDL) was successfully fabricated. The material maintains the inherent porous architecture while forming a stable micro/nano-rough surface, exhibiting excellent superhydrophobicity with a water contact angle of approximately 155°, and demonstrating exceptional stability in harsh acidic/alkaline/saline environments and multiple cycles. Benefiting from the synergistic photothermal effect of Fe3O4and EG, under one sun illumination (1 kW/m2), the material surface temperature rapidly reaches above 80 °C within 100 s, reducing the viscosity of high-viscosity crude oil by over 95% (from 1.39 × 105to approximately 6.0 × 103mPa·s), thereby enabling rapid penetration and adsorption within 50 s. Moreover, the composite coating significantly enhances mechanical performance, achieving a compressive strength of 320 kPa (approximately eight times higher than that of the pristine substrate), ensuring structural integrity during handling and compression recovery. Meanwhile, the material demonstrates precise directional manipulation and efficient recovery through external magnetic fields due to its superior magnetic responsivity. Experimental results reveal a broad-spectrum adsorption capacity (14.8–30.2 g/g) and separation efficiency exceeding 96% after 20 adsorption–desorption cycles. In summary, this work presents an innovative strategy with significant application potential for efficient and controllable remediation of marine oil spills, particularly high-viscosity crude oil, by integrating synergistic functions of porous adsorption, superhydrophobic corrosion resistance, photothermal viscosity reduction, mechanical reinforcement, and magnetic control.
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Foods
·
2026
·Vol. 15
·期 7
·1131
·
IF 6
Jiyu Nie,Danying Chen,Chengfeng Yu,Zengliang Jiang,Haibo Pan,Xingqian Ye,Shiguo Chen
Carrageenan (CGN) is widely used in processed foods and is typically supplied as a commercial preparation blended with other hydrocolloids to improve gelling properties, rather than as a single purified polymer. However, safety evaluations and mechanistic studies have largely focused on CGN in isolation; as a result, the biological effects of commercial CGN preparations (CGNPs) under realistic exposure conditions are still insufficiently characterized. In this study, the structural characteristics of three commercial food-grade CGNPs intended for meat products, soft sweets, and jelly were investigated. Furthermore, their effects on colitis were assessed, along with their impacts on the gut microbiota and related metabolites. The results indicated that all three CGNPs were κ-type, but differed in monosaccharide composition and molecular weight, which may contribute to their biological differences. In vivo, the CGNP intended for soft sweets significantly reduced the disease activity index (n= 6/group,p< 0.05) and helped maintain colon length (n= 6/group,p< 0.05). This CGNP also markedly reduced the abundance ofEscherichia-ShigellaandHelicobacter, while increasing propionate levels (n= 6/group,p< 0.05). In contrast, CGNPs intended for meat products and jelly tended to exacerbate colitis and increased the abundance ofEnterococcus, a genus associated with colitis. These findings reveal the application-specific biological effects of commercial food-grade CGNPs and provide a basis for optimizing the application of these preparations in the food industry.
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