CHEMISTRY & BIODIVERSITY
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2026
·Vol. 23
·期 3
·e03104
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IF 2.9
Yingjian Lu,Le Li,Zhuolun Xin,Xiangfei Li
UC is a globally escalating intestinal disorder with limited safe and effective interventions. This study investigated the synergistic therapeutic effects and mechanisms of Lactobacillus johnsonii 46 ( L. johnsonii 46) (a feruloyl esterase-producing strain) and rice bran (LJRB) on DSS-induced UC in C57BL/6J mice. The animal groups were divided into control group (CON), DSS group (MOD), sulfasalazine group (SUL), rice bran group (RBN), L. johnsonii 46 group (LAJ), and LJRB treatment group (RBL). The organ index, disease index, and biochemical indicators of mice were measured, the histopathology of the colon was analyzed. The expression of inflammatory factor, tight junction protein and TLRs/TRAF6/NF-κB signaling pathway genes were detected by Real-Time Quantitative Polymerase Chain Reaction (RT-qPCR). LJRB supplementation exerted superior protective effects compared to single rice bran (RBN) or L. johnsonii 46 (LAJ) intervention: it significantly alleviated DSS-induced weight loss (RBL group: 1.46 ± 0.21 g vs. MOD group: ∼3 g, p < 0.05), restored colon length, and reduced the disease activity index (DAI) by ∼50%. Biochemical and molecular analyses showed LJRB remarkably suppressed serum pro-inflammatory cytokines (IL-1β, TNF-α, IL-6; 40%–60% reduction vs. MOD group) while elevating anti-inflammatory IL-10 (∼35% increase), enhanced colonic antioxidant capacity (reduced MDA by ∼30% and increased SOD, GSH, GSH-Px by 25%–40%), and enriched cecal short-chain fatty acids (SCFAs) with acetic acid (0.99 µmol/g), propionic acid (0.31 µmol/g), and butyric acid (0.21 µmol/g) significantly higher than the MOD group. Mechanistically, LJRB synergistically inhibited the TLRs/TRAF6/NF-κB signaling pathway, as indicated by downregulated mRNA expression of TLR4, MyD88, IKKβ, and NF-κB p65 (30%–50% reduction vs. MOD group) and decreased phosphorylation of IKKβ, IκBα, and NF-κB p65 proteins. Histopathological observations confirmed LJRB preserved colon tissue integrity, reduced goblet cell loss, and alleviated mucosal erosion and edema. Collectively, these findings demonstrate LJRB alleviates UC through multi-targeted mechanisms (anti-inflammation, antioxidation, SCFA production promotion, and nuclear factor kappa-B (NF-κB) pathway inhibition), highlighting its potential as a novel natural dietary supplement for UC prevention and management. Graphical Synergistic protective effects of rice bran combined with Lactobacillus johnsonii 46 on DSS-induced ulcerative colitis in mice: Evaluated by clinical, biochemical, histopathological and molecular biological assays.
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JOURNAL OF APPLIED POLYMER SCIENCE
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2026
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IF 3.1
Mengling Zhang,Chi Zhang,Mingfang Sun,Li Yuan,Gaiping Guo,Huafeng Tian,Yuge Ouyang,Rakesh Kumar
To address the adhesion problem of curcumin-containing zein fibers, sandwich-structured zein/poly(vinyl alcohol) (PVA) membranes with a curcumin-functionalized core layer were fabricated via sequential electrospinning (outer-core-outer). The core layer exhibited flattened and adhesive fibers, whereas encapsulation within protective outer layers yielded cylindrical, non-adhesive fibers with tunable diameters (0.43–1.0 μm). The sandwich membranes exhibited enhanced mechanical properties (tensile strength up to 4.67 MPa) and stable hydrophobicity. Filtration tests demonstrated > 95% efficiency for 0.3 μm particles and > 97% for particles ≥ 0.5 μm, with pressure drop values ranging from 7.03 to 7.56 mbar. Post-filtration imaging revealed that curcumin-containing membranes displayed dispersed particle deposition on individual fibers, while the curcumin-free outer layer showed extensive particle aggregation, indicating curcumin-induced particle anchoring. FTIR analysis confirmed curcumin-mediated hydrogen bonding and increased β-sheet content. The sandwich design resolves core layer adhesion while preserving filtration functionality, offering a sustainable strategy for bio-based air filtration materials.
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JOURNAL OF MATERIALS SCIENCE
·
2026
·
IF 4.4
Jia Qi,Niu Yuqing,Yan Sen,Zhang Jingli,Han Ling
Thermal insulation materials play a critical role in enabling energy conservation and sustainable development. While emerging micro-nanofiber-based porous insulation materials have attracted significant attention due to their remarkably lower thermal conductivity compared to traditional counterparts, their widespread application has been hindered by complex manufacturing processes and high costs. This study pioneers a novel pathway to address these challenges through the high-value transformation of waste polyethylene terephthalate (PET) bottles into cost-effective, high-performance materials. To overcome the difficulty of controllably constructing micropores within aerogels, we developed an innovative approach combining electrospinning with vapor-induced phase separation (VIPS), optimized via response surface methodology (RSM) to precisely engineer nano-pores on fiber surfaces. This strategy successfully produced recycled polyethylene terephthalate (rPET)/chitosan (CS) composite aerogels featuring a hierarchical “macro–meso–micro” porous architecture. Furthermore, by uniquely regulating tert-butanol concentration to control ice crystal dimensions, we constructed aerogels with a distinctive “dense-sparse-dense” gradient structure. The resulting material demonstrates exceptional comprehensive performance, with outstanding thermal insulation properties exhibiting an ultralow thermal conductivity of 0.040 W/(m K). This work, therefore, holds dual significance: it offers a viable solution for sustainable waste management and establishes a robust theoretical and technical foundation for the development of high-performance aerogels with customizable hierarchical and gradient structures. Graphical abstract
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JOURNAL OF CHROMATOGRAPHY A
·
2026
·
IF 4
Chenqing Zhang,Juan Zhang,Zhiyu Zhang,Jing Yan,Zhuoyue Hou,Shusheng Zhang,Kai Hu
Short-chain fatty acids (SCFAs) are key biomarkers of gut microbiota activity and are implicated in various metabolic, inflammatory, and neurological diseases. This study fabricated a phenothiazine-based hyper-crosslinked polymer (PTZ-HCP) and applied it as a solid-phase microextraction (SPME) fiber coating for the analysis of nine SCFAs in rat feces by gas chromatography with flame ionization detection (GC-FID). The prepared PTZ-HCP was characterized by scanning electron microscopy, X-ray photoelectron spectroscopy, N 2 adsorption-desorption measurements, and thermogravimetric analysis. These analyses confirmed its successful synthesis and revealed a porous structure, high specific surface area, and excellent thermal stability. Owing to these structural advantages and the capability for multiple functional groups, the PTZ-HCP coatings demonstrated outstanding extraction efficiency and high adsorption capacity for SCFAs. An SPME/GC-FID method using PTZ-HCP coated fibers were established and validated. The validation results demonstrated significant advantages, including a wide linear range (1.0 × 10 -3 -0.50 μg·mL -1 for 2-methylvaleric acid; 1.0 × 10 -3 -2.0 μg·mL -1 for 4-methylvaleric acid), low LODs (3.0 × 10 -4 μg·mL -1 for 2-methylvaleric acid and 4-methylvaleric acid), and good precision (≤ 9.5%). This work presents a novel SPME coating material that effectively addresses key challenges in the extraction and analysis of SCFAs in rat fecal samples. Moreover, it verifies that Coptis chinensis modulates gut microbiota by altering SCFA levels, thereby offering important insights for research on the pathological mechanisms and treatment of Parkinson’s disease.
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Journal of Environmental Chemical Engineering
·
2026
·
IF 7.5
Wanzi Li,Jie Yang,Yulong Yan,Hang Chen,Rui Zuo
The co-contamination of V(Ⅴ) and Cr(Ⅵ) in wastewater poses significant risks to aquatic ecosystems and human health. However, it remains challenging to both develop efficient adsorbents for their simultaneous removal and elucidate their interactions. In this study, a novel metal-organic framework (MOFs) adsorbent, UiO-66-NH₂, was synthesized in an open system at atmospheric pressure for the treatment of combined pollution of V(Ⅴ) and Cr(Ⅵ) in solution. Adsorption experiments demonstrated that UiO-66-NH 2 exhibits strong adsorption capacity toward V(V) and Cr(VI), primarily governed by chemisorption. The maximum adsorption capacities for V(V) and Cr(VI) in single system adsorption were 543.40 mg/g and 335.28 mg/g, respectively. In the binary system, V(V) and Cr(VI) adsorption capacities reached 712 mg/g and 501 mg/g, respectively, which were 1.92 and 3.32 times those in their respective single systems. This confirms synergistic effects. However, localized uptake fluctuations, such as a 4.4% decrease in Cr uptake with increasing V concentration, indicate competitive interactions. The material also showed selective adsorption toward V(V). Combined with material characterization and molecular dynamics (MD) simulations, the chemical composition and structural stability of the material were analyzed, and the adsorption mechanism at the micro level was revealed. The adsorption mechanism of UiO-66-NH 2 for V(V) and Cr(VI) involves electrostatic interactions, chemical reduction, hydrogen bonding, and coordination. These findings provide theoretical insights for the application of UiO-66-NH 2 in treating V(V) and Cr(VI) contaminants in wastewater and for the design of related adsorbents.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
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IF 5.4
Weiyun Tian,Zhichao Yang,Jinbiao Yang,Xiaojuan Wang,Hanbing Wu,Yu Wang,Wei Li,Xingxiang Zhang,Xiao Ma,Na Han
A novel hybrid-shell phase change materials (PCMs) was prepared via Pickering emulsion polymerization, exhibiting high thermal stability while maintaining a high latent heat. Using n-octadecane as the core, microencapsulated phase change materials (MicroPCMs) with PMMA@PS@SiO 2 hybrid shells were designed. The MicroPCMs achieved an enthalpy of 119.2 J/g, reaching 99.3% of the theoretical value, with an energy storage efficiency of 66.1% and a heat storage capacity of 99.8%. The temperature corresponding to 5% weight loss ( T 5% ) increased by 83 ℃, and the leakage rate remained as low as 5.6% after 200 cycles. The formation of the hybrid shell significantly enhanced the thermal stability and cycling durability of the MicroPCMs, while maintaining a high heat storage capacity and effectively addressing the leakage and cycling instability commonly existing in PCMs. Moreover, the surface-modified SiO 2 acted as a stabilizer to construct the Pickering emulsion template, enabling a green fabrication process. Finally, flexible PCM films were fabricated by melt blending and extrusion of MicroPCMs and poly(vinyl alcohol) (PVA), exhibiting excellent thermal management performance. Overall, the MicroPCMs demonstrate significant potential, with particular relevance and advantages in high-temperature processing areas.
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Food Packaging and Shelf Life
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2026
·
IF 10.8
Feng Xiao,Yimeng Zhang,Haoran Wang,Ji Wei,Linlin Li,Hualin Wang
Ethylene (C 2 H 4 ), a natural plant hormone, accelerates the ripening and senescence of fruits and vegetables (F&V), posing significant challenges to their post-harvest preservation. Herein, we develop a C 2 H 4 scavenging nanofiber membrane by chemically modifying zein (ZN) with (3-mercaptopropyl) triethoxysilane (MPTES). This modification reduces the hydroxyl content while introducing sulfhydryl groups on zein chain. The typical membrane of ZN-MPTES3 demonstrates excellent hydrophobic property with a water contact angle (WCA) of > 140°, and can maintain structural integrity after 24 h of water immersion. Additionally, the MPTES grafting enhances the membrane's roughness. At 25 °C, the ZN-MPTES3 membrane effectively extends the shelf-life of bananas through a thiol-ene click reaction with C 2 H 4 , which is accelerated under UV exposure (365 nm), further enhancing the preservation efficacy. These results demonstrate the potential of the ZN-MPTES electrospun membrane as a sustainable and effective platform for the preservation of post-harvest F&V.
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CHEMICAL ENGINEERING RESEARCH & DESIGN
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2026
·
IF 4
Yancong Yin,Zhiwei Zhang,Fumin Wang,Xubin Zhang,Bingxin Zhu,Yang Qin,Jinhua Shi,Kaihao Li,Guodong Zhu,Qi Shen,Changhao Bing,Qingzhao Liu,Zheng Wang,Qingshan zhao
Electronic-grade propylene glycol monomethyl ether acetate (PGMEA) plays a vital role in the semiconductor industry. The direct synthesis of PGMEA from propylene glycol monomethyl ether (PM) and acetic acid (HAC) is inherently limited by reaction equilibrium constraints. The reactive distillation (RD) process effectively addresses this equilibrium limitation by utilizing an entrainer to continuously remove reaction products from the system. A significant enhancement in reaction conversion is achieved through this approach. In the reactive distillation process, PM, as one of the reactants, is utilized as the water-entraining agent, which enables simultaneous promotion of the forward reaction via water removal and prevention of impurity introduction, as no external entrainer is required. At the beginning, the reaction kinetics model for PGMEA synthesis is established to precisely elucidate the influence of temperature and concentration on the progress. Furthermore, reactive distillation experiments and process simulation studies are conducted, and two highly feasible and broadly applicable processes for high-purity PGMEA production are yielded ultimately. Through the study, a high-purity PGMEA product is provided as distillation feedstock for subsequent purification steps to achieve electronic-grade product specifications.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2026
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IF 9.1
Ying Zhang,Ruohan Li,Wenying Sun,Wei Mao,Yibing Li,Lixun Zhang,Yuntao Guan
The pervasive contamination of tetrabromobisphenol A (TBBPA) presents a critical environmental challenge due to its persistence and resistance to conventional degradation. Although sulfidized nanoscale zero-valent iron (S-nZVI) represents a promising remediation avenue, its efficacy is severely constrained by particle agglomeration and insufficient mineralization capabilities. Here, we report a self-dissociation-assembly strategy to engineer a robust S-nZVI composite supported on Mg Al layered double oxides (S-nZVI@LDO) for the substantial removal of TBBPA. By modulating the precursor synthesis pathways, we demonstrate that the hydrothermal-derived LDO support (α-phase) creates a unique nanosheet architecture that facilitates superior dispersion of reactive Fe/S species compared to chemically precipitated counterparts. The optimized S-nZVI@LDO α composite achieves >95% TBBPA removal efficiency, with a debromination efficiency of 71% and a mineralization rate of 51%, significantly outperforming traditional composites. Mechanistic investigations reveal a synergistic pathway involving rapid electrostatic adsorption, reductive debromination driven by surface-bound Fe 0 , and oxidative mineralization via in-situ generated radicals. Furthermore, the catalyst exhibits improved stability and reusability over multiple cycles. This work elucidates the critical role of precursor structural evolution in catalyst design and provides a scalable, high-efficiency solution for the remediation of halogenated organic pollutants.
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Talanta Open
·
2026
·
IF 5.1
Mei Liu,Xuehong Min,Die Hu,Xiaonan Zhang,Siyi Zhang
In this study, we developed catechol-imprinted magnetic molecularly imprinted polymers (Ca-DFFPBA-MMIPs) via a dual-affinity strategy combining boronate affinity and a two-step template immobilization protocol. The Ca-DFFPBA-MMIPs exhibited high affinity and selectivity for catecholamines (norepinephrine, epinephrine, and dopamine) under neutral conditions. The adsorption capacity reached a plateau at pH 6.5–7.0, and the adsorption time was optimized to 40 minutes. The MMIPs showed excellent selectivity for the target catecholamines over structurally related interferents. The Ca-DFFPBA-MMIPs also demonstrated good reusability, retaining ≥90% of their initial adsorption capacity after seven consecutive cycles. The analytical performance of the Ca-DFFPBA-MMIPs was validated in terms of linear range, coefficient of determination (R²), limit of detection (LOD), limit of quantification (LOQ), and intra- and inter-day precision (RSD). The LODs were 12–31 ng mL⁻¹ and LOQs were 40–103 ng mL⁻¹, with RSDs of 0.87–1.13% (intra-day) and 1.75–1.95% (inter-day). The Ca-DFFPBA-MMIPs were successfully applied to the selective extraction of catecholamines from equine urine (enrichment factors of 18–27), with recoveries ranging from 64.5% to 105.7%. This study provides a new approach for the analysis of catecholamines in complex matrices and highlights the potential of Ca-DFFPBA-MMIPs as a practical nanosorbent for efficient and selective enrichment of catecholamines and related compounds.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Ruixiang Wang,Qin Du,Jiayao Zhou,Li Zhao,Jingsong He,Ravi Naidu,Dionissios Mantzavinos,Grigorios Beligiannis,Nikolaos Andritsos,Fei Shen,Yongjia Lei
Covalent organic frameworks (COFs) with long-range ordered periodic structures have emerged as promising photocatalysts for advanced oxidation processes. Herein, we reported a highly crystalline porphyrin-based COF (COF-TAP-Cu) featuring outstanding visible-light-driven oxidation activity. COF-TAP-Cu was obtained via a facile bottom-up metallization strategy that tuned the conjugation and planarity of the porphyrin building block (TAP-H). Incorporation of Ni 2+ or Cu 2+ into TAP-H moderately enhanced the π-conjugation of the resulting metalloporphyrin monomers (TAP-M; M = Ni, Cu), leading to markedly improved crystallinity of the corresponding COFs. Notably, structural analysis indicated that the porphyrin ring in TAP-Ni undergoes pronounced distortion, whereas TAP-Cu retained a near-planar geometry. As a result, COF-TAP-Cu exhibited higher crystallinity and superior photocatalytic oxidation performance compared with the metal-free porphyrin-based COFs (COF-TAP-H) and Ni-anchored porphyrin-based COFs (COF-TAP-Ni). Under visible-light irradiation, COF-TAP-Cu efficiently activated molecular oxygen to produce both O 2 •- ( via electron transfer) and 1 O 2 ( via energy transfer), enabling rapid degradation of sulfadiazine (SDZ) with a removal efficiency of up to 95% within 30 min. This work highlighted a monomer-design strategy that balanced conjugation and planarity to construct highly crystalline porphyrin-based COFs, offering new insights for photocatalytic antibiotic remediation in aquatic environments.
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CERAMICS INTERNATIONAL
·
2026
·
IF 6
Peng Shu,Yunzhu Ma,Wensheng Liu,Juan Wang,Shuwei Yao
Al 2 O 3 -ZrO 2 biphasic fibers were of considerable interest due to their superior mechanical properties and thermal stability. Despite this, precise control over fiber structure and further enhancement of thermal stability remained significant challenges. This study investigated the regulation of phase transformation behavior and thermal stability in Al 2 O 3 -ZrO 2 fibers through Sc 2 O 3 doping. The findings demonstrated that Sc 2 O 3 doping facilitated the formation of α-Al 2 O 3 and t-ZrO 2 phases within the fibers. In samples containing 1 wt.% Sc 2 O 3 , the average crystal size of α-Al 2 O 3 was 160 nm, while t-ZrO 2 crystals displayed a bimodal nanoscale distribution. The Weibull strength of these fibers reached 1.99 GPa. Following exposure to 1200 °C for 100 h, most α-Al 2 O 3 crystal sizes remained within the 200-300 nm range. The mechanism by which Sc 2 O 3 doping affects structural evolution and enhances the thermal stability of Al 2 O 3 -ZrO 2 fibers was also examined.
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危险品化学品经营许可证（带存储）