Food Bioscience
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2025
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IF 5.9
Yujia Zhou,Zhiming Li,Xinghui Xie,Xingtao Zhou,Jielun Hu,Shaoping Nie
Gellan is a microbial polysaccharide synthesized by Sphingomonas paucimobilis , and is widely utilized in the food and pharmaceutical industries, as well as in other fields. However, much remains unknown about the key genes involved in the gellan synthesis pathway. In this study, ultraviolet (UV) and atmospheric room temperature plasma (ARTP) were employed to induce mutations in S . paucimobilis ATCC31461 (Sp31461 NC), and ultimately resulting a high-yield mutant strain (Sp31461 UA) with a yield increase of 120 % from 3.6 g/L to 8.3 g/L. The growth curve, monosaccharide composition and molecular weight indicated that mutagenesis accelerated the growth of the strain, but did not affect gellan's basic physicochemical property. A combined analysis of transcriptomic and metabolomic demonstrated that the differentially expressed genes and metabolites resulting from mutations were primarily enriched in pathways related to energy metabolism, among which potential key genes such as pgi , clpB , ycaJ associated with gellan yield, were further verified by quantitative reverse transcription polymerase chain reaction (qRT-PCR) and gene overexpression. Notably, the strain overexpression the pgi gene resulted in a 20 % increase in gellan yield compared to the Sp31461 UA strain, reaching 10.0 g/L. In summary, the energy metabolism pathway in S . paucimobilis is closely linked to gellan biosynthesis, and high-yield strains of gellan can be developed through mutagenesis breeding and the overexpression of key genes identified by transcriptomics and metabolomics. This research offers valuable scientific insights for the industrial production and application of gellan.
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高影响因子
Journal of Materials Chemistry A
·
2025
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IF 9.5
Shuang Qiu,Yangming Zou,xiaoyu gu,Jiang Jing,Jun Sun,Haiqiao Wang,Bin Fei,Sheng Zhang
Solar power, as a clean and renewable energy source, holds tremendous potential for future energy systems. This study presented lightweight, flame-retardant, and durable polycarbonate (PC) encapsulation panels incorporated with a fluorescent agent to substitute the glass covers in photovoltaic (PV) modules. A novel fluorescent derivative (TPA-BPOD), synthesized from triphenylamine and phenyl phosphonic dichloride, was doped into PC at a concentration of 0.5 wt%. The resulting PC panel (0.7 mm thickness) exhibited visible-light transmittance comparable to pure PC while effectively converting ultraviolet (UV) light to visible wavelengths. When applied to silicon solar cells as a front encapsulant, the PC+0.5% TPA-BPOD panel increased the power conversion efficiency (PCE) by 3.5%. Furthermore, the PC panel (1.6 mm thickness) demonstrated superior flame retardancy, achieving a UL-94 V-0 rating and a limiting oxygen index (LOI) of 28.8%, along with significantly suppressed release of toxic gases during combustion. After 360 h of accelerated UV aging (500 W, 60 °C), the PC+0.5% TPA-BPOD panel retained better mechanical properties than the undoped control, highlighting its improved durability. By enabling lightweight, safe, and efficiency-boosting PV encapsulation, this strategy supports the development of next-generation solar technologies, particularly in building-integrated or vehicle-integrated photovoltaics and flexible solar applications.
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APPLIED SURFACE SCIENCE
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2013
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IF 2.112
Zhenlong Yan,Weiqu Liu,Nan Gao,Honglei Wang,Kui Su
A novel functional fluorinated siloxane graft copolymer bearing with vinyl end-groups was synthesized from dihydroxypropyl-terminated poly(dimethylsiloxane) (PDMS), dicarboxyl terminated poly(2,2,3,4,4,4-hexafluorobutyl acrylate) oligomer (CTHFA), 2,4-toluene diissocyanate (TDI) and 2-hydroxyethyl methacrylate (HEMA). The chemical structure was characterized by FT-IR and GPC. The effect of concentration of the vinyl-capped fluorosilicone graft copolymer (Vi-PFSi) on the surface, thermal properties, dielectric and tribological properties of UV-cured films was investigated. Contact angles and surface energies showed that the high hydrophobic and oleophobic surfaces were obtained by incorporation of Vi-PFSi at very low amount (0.5 wt%). X-ray photoelectron spectroscopy (XPS) evidenced that the fluorinated and siloxane moiety selectively migrated to the outermost surface of UV-cured film, thus reduced its surface energy from 45.42 to 15.40 mN/m 2 without affecting its bulk properties. The morphology of fracture surface of modified film exhibited rough fracture surface only at the outermost surface, revealing fluorinated and siloxane groups migrated toward air-side surface. The dielectric constants decreased from 5.32 (1 MHz) for bisphenol-A epoxy methacrylate (EMA) to 2.82 (1 MHz) for modified film when the Vi-PFSi copolymer concentration increased from 0 to 0.8 wt%. Tribological results from abrasion tester suggested that the Vi-PFSi could obviously reduce the abrasion weight loss of modified films.
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FOOD CHEMISTRY
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2026
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IF 10.4
Lirong Lu,Jiatian Zhu,Jingpeng Zhou,Xi Cheng,Baojie Liu,Chengrong Qin,Chen Liang,Caoxing Huang,Shuangquan Yao
Facing the urgent need for sustainable and functional food packaging, developing high-performance materials from natural polymers is crucial. Herein, we propose a green strategy inspired by crustacean exoskeletons to construct lignin–metal polyphenol networks (L-MPNs) via proton-based ionic liquid pretreatment and metal-ion coordination. This forms a stable 3D network utilizing lignin's phenolic hydroxyl groups, which significantly enhances antioxidant activity, achieves >99% UV shielding, and exhibits 92.5% DPPH radical scavenging capacity. Applied to paper packaging, Ferric-ion-coordinated lignin-metal polyphenol networks (FL-MPNs, 100 g/m 2 ) impart excellent barrier and antioxidant properties alongside maintained mechanical strength, cutting water vapor transmission by ∼40%. In freshness tests, they reduced mass loss to 3.52% and pH change to 0.17, effectively inhibiting food deterioration. Thus, FL-MPNs advance lignin valorization for next-generation sustainable smart packaging to ensure safer, more stable food preservation.
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PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2026
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IF 8.7
Yang Cao,Xiaohong Guo,Ting Li,Zihe Wang,Yi Wang,Keyu Zhu,Di Wu,Kunsong Chen
HAMA-EG hydrogel achieved ultra-rapid crosslinking and curing in 1 s under UV light • EG annealing enhanced compressive strength and mechanical durability of the hydrogel • HAMA-EG retained 72.52% cyclic mechanical retention after −20 °C freezing • HAMA-EG had wide-temperature stability, high water retention, and good cushioning • HAMA-EG hydrogel effectively mitigated vibration and drop damage on peach fruit Hydrogels are promising cushioning materials for fresh produce packaging because of their viscoelasticity, deformability, and energy-dissipation capability. In this study, a UV-curable hydrogel based on methacrylated hyaluronic acid (HAMA) was developed. Through ethylene glycol (EG) annealing, a cushioning material (HAMA-EG) with good low-temperature tolerance and high water retention was fabricated. Systematic characterizations indicated that the hydrogel achieved rapid 1 s UV curing, attributed to approximately 0.69 methacryloyl groups grafted per HA disaccharide unit, which provided sufficient photosensitive crosslinking sites on the HAMA chains. HAMA-EG also exhibited a regular porous structure, good mechanical properties (Young's modulus of 0.28 MPa and compressive strength of 3.85 MPa), and biocompatibility. The incorporation of EG enhanced the material's low-temperature resistance (no freezing at −40 °C) and environmental stability (cumulative weight loss of only 29.41% after 120 h). In addition, HAMA-EG Gel showed enhanced cyclic mechanical stability after environmental pretreatment; after −20 °C freezing, its cyclic mechanical retention remained at 72.52%, compared with 6.43% for HAMA Gel. In simulated vibration and drop transportation tests using peaches as a bruise-sensitive fruit model, HAMA-EG reduced mechanical damage and better maintained fruit quality than commercial cushioning materials. Overall, HAMA-EG enabled rapid curing and forming with good energy dissipation and water-retention properties, thus holding broad application in cushioning protection for fresh produce. Download: Download high-res image (416KB) Download: Download full-size image
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Composites Part C: Open Access
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2026
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IF 7
Zhiguo Liu,Hongye Li,Xiangqi Miao,Yufei Chen,Zhengfeng Jia,Meng Liu,Jinming Zhen,Ran Zhang,Liping Wang,Bo Wang
A solvent-free BDB@ZIF-8 nanofluid was successfully synthesized and characterized. • The nanofluid exhibited liquid-like behavior and excellent dispersibility in epoxy resin. • The dual transfer film composed of iron oxides, a carbon-rich layer, and a liquid phase formed on the worn surface. • The friction coefficient and wear rate of BDB@ZIF-8 nanofluid reinforced resin composites reduces by 24.3% and 70.97% compared with pure resin. An innovative solvent-free route was developed for fabricating bamboo-derived biochar @Zeolitic Imidazolate Framework-8 nanofluids (code as: BDB@ZIF-8 NFs) via electrostatic assembly of BDB with ZIF-8, culminating in the covalent conjugation of a KH560-M2070 outer shell. The resulting NFs exhibited liquid-like behavior and hybrid organic-inorganic characteristics, leading to an excellent dispersibility within epoxy resin matrix. A comparative study on the tribological performance of resin composites reinforced with various fillers revealed that the BDB@ZIF-8 NFs provided the most significant enhancement. The synergy between the BDB@ZIF-8 core and its KH560-M2070 shell underpins this enhanced performance. The possible mechanisms are as follows: BDB and ZIF-8 act as fillers and rollers on the worn surface, thereby decreasing resin wear. Meanwhile, owing to the presence of the nanofluid, the friction mode during relative motion shifts from dry friction to boundary friction, resulting in a reduced friction coefficient (COF). On the other hand, a dual transfer film composed of iron oxides, a carbon-rich film derived from BDB nanosheets, and a liquid phase is squeezed out of the matrix onto the worn surface. These films collectively enhance the lubricity and durability of the composite. Download: Download high-res image (312KB) Download: Download full-size image
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Journal of the Taiwan Institute of Chemical Engineers
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2026
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IF 6.9
Song song,Yihe Qin,Rui Yuan,Xiaoman Li,Yuancai Chen,Haiming Huang
Background The persistence and eutrophication risks posed by organophosphorus pollutants and P recovery have attracted great concern. To overcome the narrow pH window and poor Fe 2+ /Fe 3+ cycling of conventional Fenton processes for the decontamination of organophosphorus effluents, a novel heterogeneous fenton process is required. Methods Herein, a Fe 3 O 4 -modified tourmaline composite (Fe 3 O 4 @Tol) was prepared via hydrothermal reaction and a heterogeneous photo-Fenton system was established with UV assistance. Significant Findings The composite achieved 89.97% conversion rate of 1-hydroxyethylidene-1,1-diphosphonic acid(HEDP) within 10 min with >80% TOC removal under neutral conditions (pH=7). Density-functional theory calculations and mechanistic investigations revealed that the piezoelectric effect of tourmaline promotes H₂O₂ dissociation and electron transfer, while UV irradiation accelerates Fe³⁺/Fe²⁺ cycling and H₂O₂ decomposition. These synergistic effects elevated H₂O₂ utilization efficiency to 81.18%. The system rapidly degraded other organophosphorus compounds (phytic acid, nitrilotrimethylene triphosphonic acid) and tolerated common inorganic salts, maintaining conversion rates above 70%. Fe 3 O 4 @Tol retained 72.21% of its initial activity after five cycles. This pH-tolerant, recyclable, and highly efficient technology offers a promising solution for the removal of recalcitrant organophosphorus pollutants from industrial wastewater.
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高影响因子
POLYMER DEGRADATION AND STABILITY
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2026
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IF 8.1
Chunlong Zuo,Shipeng Xiao,Yufeng Xie,Zhaoyong Dong,Yingbin Guo,Jieyun Zhao,Xilin Liao
Polyacrylonitrile (PAN) fiber is widely applied in textile and industrial fields, whereas their inherent flammability and release of toxic gases severely restrict their high-safety applications. In this work, an intumescent flame retardant (TP@Gly) was successfully synthesized via a one-step Mannich reaction using tea polyphenols, glyphosate and formaldehyde. The PAN spinning solution was blended with TP@Gly to prepare modified fiber (TP@Gly/PAN) via wet spinning. Subsequently, flame-retardant PAN fiber (O/UV-TP@Gly/PAN) was obtained by treating TP@Gly/PAN with UV-induced thermal oxidation. The results indicated that ion- and UV-induced thermal oxidation obviously promoted generation of thermostable conjugated trapezoidal structures of PAN molecular chains at 180 °C. Therefore, O/UV-TP@Gly/PAN exhibited a high LOI value of 31.5%. Cone calorimetry tests demonstrated that O/UV-TP@Gly/PAN achieved excellent flame retardant and smoke suppression performance by dramatically reducing the peak heat release rate, total smoke production rate and CO production rate by 69.6%, 82.9% and 91.7%. Moreover, the release of toxic HCN was effectively restrained, further verifying the superior fire safety performance. The tensile strength of O/UV-TP@Gly/PAN increased from 13.35 cN/tex to 20.12 cN/tex. This study provided a facile and effective strategy for the preparation of flame-retardant PAN fiber.
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高影响因子
Journal of Materiomics
·
2019
·Vol. 5
·期 2
·195-203
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IF 0
Zhihao Wang,Shaojie Chen,Zhen Huang,Zhenyao Wei,Lin Shen,Hui Gu,Xiaoxiong Xu,Xiayin Yao
A novel solid polymer electrolyte with comb-like structure is prepared via a solvent-free UV-cured method. The relationship between conductivity and molecular weight is investigated and revealed. The optimal electrolyte presents a considerably high conductivity of 1.44 × 10 −4 S·cm −1 at 30 °C. Meanwhile, it shows excellent compatibility with metallic lithium and wide electrochemical window (>5 V). To investigate the safety and cycling performance, the coin cell and soft package battery are assembled respectively. The LiFePO 4 /Li coin cells exhibit initial discharge specific capacities of 163.2, 147.7, 137.3 and 108.7 mA·h·g −1 at 0.1, 0.2, 0.5 and 1C under 60 °C, respectively. Notably, when the coin cells work at 30 °C, the initial discharge specific capacities at 0.05, 0.1, 0.2 and 0.5C are 140.5, 133.5, 107.7 and 55.6 mA·h·g −1 . Significantly, a 3.5 cm × 7 cm solid-state soft pack battery is fabricated and cycling at 30 °C. The first discharge capacity reaches to 137.5 mA·h·g −1 and the capacity retention is as high as 84.4% after 100 cycles at 0.2C and remain 95.5% after 100 cycles at 0.5C, respectively. These results shows a promising solid polymer electrolyte for solid-state batteries with good cycling and safety performance.
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JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
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2016
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IF 3.958
Lei Zhao,Baoyue Zhang,Xin Xiao,Feng Long Gu,Rui-Qin Zhang
Active species such as holes, electrons, hydroxyl radicals ( OH), and superoxide radical anions ( O 2 − ) involved in the photocatalytic oxidation of benzyl alcohol (BA) into benzaldehyde (BAD) on TiO 2 under ultraviolet (UV) light were investigated by adding corresponding scavengers. The experimental results show that the oxidation of BA into BAD is driven mainly by the holes and OH radical. The role of dissolved O 2 was studied by bubbling N 2 through the reaction. The results show that the dissolved O 2 is, to some extent, the source of OH. Additional density functional theory (DFT) calculations identified two H-abstraction pathways ( R abs OH and R abs α). The structure of the R abs OH product is less stable and tends to transfer resulting in the R abs α product. The holes are the main driving force for the abstracting of H from BA. The OH radical combines with the H-abstract product to form a precursor of product BAD, detected by LC–MS technique ( m / z 123), which then undergoes an intramolecular dehydration reaction to form BAD. The results will help to select the optimal active species for the photocatalytic oxidation of BA into BAD on TiO 2 under UV light.
研究领域:
物理化学
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光催化
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环境化学
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材料化学
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理论计算化学
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高影响因子
JOURNAL OF STEROID BIOCHEMISTRY AND MOLECULAR BIOLOGY
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2023
·
IF 4.1
Mengyun Wang,Yang Yu,Yunbing Tang,Chengshuang Pan,Qianjin Fei,Zhiyan Hu,Huitao Li,Yang Zhu,Yiyan Wang,Ren-shan Ge
Benzophenone (BP) ultraviolet (UV) -filters have been widely used to prevent adverse effects of UV. Whether they can disrupt gonadal steroidogenesis remains unclear. Gonadal 3β-hydroxysteroid dehydrogenases (3β-HSD) catalyse the conversion of pregnenolone to progesterone . This study explored the effect of 12 BPs on human, rat, and mouse 3β-HSD isoforms , and analysed the structure-activity relationship (SAR) and underlying mechanisms. The inhibitory potency was BP-1 (IC 50 , 5.66 ± 0.95 μM) > BP-2 (5.84 ± 2.22 μM) > BP-6 (185.8 ± 115.2 μM) > BP3-BP12 on human KGN 3β-HSD2, BP-2 (5.90 ± 1.02 μM) > BP-1 (7.55 ± 1.26 μM) > BP3-B12 on rat testicular 3β-HSD1, and BP-1 (15.04 ± 5.20 μM) > BP-2 (22.64 ± 11.81 μM) > BP-6（125.1 ± 34.65 μM）> BP-7 (161.1 ± 102.4 μM) > other BPs on mouse testicular 3β-HSD6. BP-1 is a mixed inhibitor of human, rat, and mouse 3β-HSDs, and BP-2 is a mixed inhibitor of human and rat 3β-HSDs and a noncompetitive inhibitor of mouse 3β-HSD6. 4-Hydroxyl substitution in the benzene ring plays a key role in enhancing potency of inhibiting human, rat, and mouse gonadal 3β-HSDs. BP-1 and BP-2 can penetrate human KGN cells to inhibit progesterone secretion at ≥ 10 μM. Docking analysis revealed that the 4-hydroxyl group of BP-1 and BP-2 forms hydrogen bonds with residue Ser123 of human 3β-HSD2 and residue Asp127 of rat 3β-HSD1. In conclusion, this study demonstrates that BP-1 and BP-2 are the most potent inhibitors of human, rat, and mouse gonadal 3β-HSDs and that there is a significant SAR difference.
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PubMed
高影响因子
CARBON
·
2023
·
IF 10.9
Xiao Gong,Qingqing Xu,Xiaona Chen,Fanchao Meng,Hangxiang Wang
In this age of technology, people are inevitably surrounded by electronic devices and light-emitting devices, but the radiation generated by these devices is very harmful to humans. Therefore, it is crucial to develop a stable absorbing material with efficient absorption capacity for UV and high-energy blue light (HEBL). In this paper, we report that carbon nanodots (CDs) with strong absorption peaks in the UV and HEBL can be rapidly synthesized in large scale by simply heating urea and citric acid at high temperature under atmospheric pressure without using any solvents. Interestingly, the large-scale prepared CDs possess green fluorescence emission upon excitation in both the UV and HEBL regions, exhibiting good photoconversion ability. Furthermore, ultrahigh efficient UV and HEBL shielding films can be prepared by embedding the CDs in a carboxymethyl cellulose matrix. By characterizing their transmission and absorption spectra , it can be found that the cellulose films containing 0.2 wt% CDs achieve almost complete shielding of UV-A, UV-B, and HEBL with a guaranteed visible light (550 nm) transmission rate of 80% or above. Finally, this cellulose film was further attached to a light-emitting diode (LED) chip to investigate its practical use in the field of UV and strong blue light shielding.
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高影响因子
危险品化学品经营许可证（带存储）