CONSTRUCTION AND BUILDING MATERIALS
·
2025
·
IF 8
Xiaoling Zou,Yuyang Yan,Yanqiu Bi,Ying Yuan,Bin Li
Asphalt pavements develop fatigue cracks during long-term service, while conventional rehab methods are inefficient and costly. Due to its excellent self-healing enhancement performance, microcapsule technology has become a research hotspot. However, current research lacks systematic investigation into the stability of microcapsules during construction and service phases, as well as the accuracy of their release mechanisms. This research aims to prepare self-healing microcapsules tailored for asphalt mixture. Accordingly, it systematically executed a full-process material optimization, structural regulation, and performance validation. Firstly, gel-permeation chromatography (GPC) was used to select the optimal rejuvenator as the core material. Meanwhile, the melamine-urea-formaldehyde (MUF) shell was chosen based on the asphalt mixture matrix's elastic-modulus matching criterion. Subsequently, microcapsules were synthesized via in-situ polymerization. By adjusting the core-shell ratio and particle size, microcapsules with controllable diameter (5–150 µm), adjustable shell thickness (200–500 nm), and compatible elastic modulus with asphalt were fabricated. Then, scanning electron microscope (SEM), differential scanning calorimetry (DSC), and nanoindentation test revealed that the microcapsules exhibit excellent thermal stability (decomposition temperature 240–280 °C) and mechanical compatibility with asphalt. Finally, rutting tests, pull-out tests, and fluorescence microscopy (FM) revealed that MUF microcapsules (particle size <25 µm) showed 60.23 % survival during construction (23.6 % higher than melamine formaldehyde microcapsules). The service-phase loss rate remained below 3 %, and the self-healing completion of asphalt cracks takes 15 min. This research achieves the tri-functional integration of “survivability, triggerability, and restorability” for microcapsules within asphalt mixtures. Providing a reliable technological pathway to enhance asphalt pavement life-cycle performance.
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POSTHARVEST BIOLOGY AND TECHNOLOGY
·
2025
·
IF 6.8
Dan Li,Huirong Cheng,Ling Xie,Hong Luo,Dandan Zhang,Jupeng Zhao,Yueming Jiang,Liang Gong
To address the challenges of postharvest oxidation and microbial contamination in litchi fruit, this study utilized sodium periodate oxidation to synthesize oxidized gum arabic (OGA) with varying aldehyde contents as an eco-friendly crosslinking agent. Chitosan (CS) was used as the film-forming matrix, with ε-polylysine (ε-PL) and gallic acid (GAL) incorporated to construct a composite film exhibiting synergistic enhancement. FT-IR, XPS, and XRD analyses revealed that aldehyde groups in OGA covalently crosslinked with amino groups in CS/ε-PL via Schiff base reactions, forming C N bonds (accounting for 26.29 %, higher than the 21.55 % in the control group), while GAL interacted with the film materials via non-covalent hydrogen bonding. Crosslinking significantly enhanced the film’s compactness, UV-blocking ability, and stability. The maximum mechanical strength and elastic modulus of the films reached 19.25 MPa and 492.88 MPa, respectively, which were approximately two times higher than those of the control group. As the degree of crosslinking increased, the film’s water solubility, water vapor permeability, and oxygen permeability significantly decreased, while its thermal stability improved. The incorporation of GAL significantly enhanced the antioxidant capacity, with a maximum free radical scavenging rate of 56.82 % within 1 h, about 1.6 times higher than that of the control group. Antibacterial tests showed that the composite film exhibited 100 % inhibition against Escherichia coli , Staphylococcus aureus , and Pestalotiopsis litchii . Litchi preservation experiment demonstrated that the film significantly outperformed the traditional preservative prochloraz in delaying nutrient loss and inhibiting microbial growth. In conclusion, the edible crosslinked composite film developed in this study shows great potential for application in food preservation packaging.
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Food Chemistry-X
·
2025
·
IF 8.2
Henan Wei,Xiaoqun Zeng,Yangying Sun,Changyu Zhou,Qiang Xia,Zhen Wu,Hongbing Yan,Yangyang Hu,Daodong Pan
Reducing salt in reconstructed duck ham while maintaining its texture is still challenging. This study developed a novel salt-reducing strategy using lyophilized emulsion complexes of myofibrillar protein (MP) and gum Arabic (GA) (4:0, 3:1, 2:2, 1:3 and 0:4) with TGase as control. Spectroscopic analysis revealed that MP-GA complexation enhanced the protein unfolding, particularly the balanced protein/polysaccharide ratio at 3:1 (M 3 G 1 ). M 3 G 1 incorporation favored the MP association and meat integration macroscopically, increasing water holding capacity by 8.02 % and gel strength by 143.3 % versus control. Sensory and electronic tongue analysis confirmed M 3 G 1 maximized saltiness perception score (8.2) than other treated groups (7.4–7.8) and the control (5.4) through heterogeneous sodium distribution. Sodium release kinetics and porcine tongue perception further reflected that M 3 G 1 rendered prolong Na + releasing out for saltiness enhancement. Therefore, MP-GA complexes with manipulated ratio (especially M 3 G 1 ) can simultaneously enhance texture and saltiness perception, offering a promising alternative for low-sodium duck ham.
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ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Ren Qian,Zhang Xin
The usage of electronics has led to the issue of electromagnetic wave pollution, and the demand for materials that can absorb electromagnetic waves is increasing. The longevity of materials may be impacted by damage caused during use. Here, a composite strategy with efficient electromagnetic wave absorption and self-healing through induction heating is proposed. Ni/PUF/PU@ER (NPPE), Cu/Ni/PUF/PU@ER (CNPPE), and Ni/PANI/PU@ER (NPAPE) microcapsules with magnetic and conductive characteristics were prepared by interface polymerization, in situ polymerization, and electroless plating methods. Their superior mechanical and thermal durability guarantee the long-term stability of the healing agent. The minimum reflection loss of the composite with NPAPE is –54.62 dB at 1.85 mm, and the effective absorption bandwidth (EAB) is 3.95 GHz. Additionally, the EAB reaches 4.32 GHz at 1.93 mm, surpassing the RL min and EAB values of the majority of similar materials. Due to the exceptional electromagnetic synergy of NPAPE, the composite exhibits the most outstanding induction heating performance. The material reaches 68.3 ° C within 10 min, which is higher than the temperatures of the other two materials. Furthermore, the crack area of the composite significantly reduces, demonstrating excellent quick self-healing characteristics for damage. This novel strategy is conducive to promoting the development of the circular economy and can introduce a worthwhile research direction into the field of electromagnetic wave absorption.
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FOOD CHEMISTRY
·
2026
·
IF 10.4
Lijuan Luo,Ping Li,Yuanyuan Deng,Guang Liu,Yan Zhang,Xiaojun Tang,Pengfei Zhou,Zhihao Zhao,Jiarui Zeng,Mingwei Zhang
Increasing GA transformed flocculated oil droplets into dense networks. • Higher GA increased droplet size and enhanced emulsion viscoelasticity. • DPPI-GA ratios of 8:1–10:1 yielded low-oil emulsions with mayonnaise-like rheology. • GA enhanced emulsion networks but excess GA (5:1–3:1) reduced interfacial activity. This study investigates low-oil-phase emulsions formed by deamidated pea protein isolate (DPPI) and gum arabic (GA) coacervates at pH 3.0 as a low-fat food system. The impact of varying the DPPI-to-GA ratio (1:0–3:1) on 28% oil emulsions was examined. DPPI and GA formed coacervates via electrostatic, hydrogen bonding, and hydrophobic interactions. Increasing GA ratio shielded hydrophobic regions of DPPI, reducing surface hydrophobicity and interfacial activity, leading to larger emulsion droplets. GA also acted as a bridging agent, promoting aggregation of coacervates and shifting the microstructure from flocculated droplets to dense networks, with oil droplets more uniformly embedded. This structural change enhanced emulsion viscoelasticity, with higher GA ratios showing stronger nonlinear rheological behavior. At DPPI-GA ratios of 8:1–10:1, emulsions exhibited viscoelastic properties and large-strain responses comparable to traditional mayonnaise (70% oil). This study suggests a plant-based method for reduced-fat emulsified foods with conventional-like structural and rheological properties. Download: Download high-res image (185KB) Download: Download full-size image
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Foods
·
2026
·Vol. 15
·期 15
·2625
·
IF 6
Hongming Gu,Xian Qu,Xiaotong Sheng,Xuran Wang,Yuhan Cai,Jie Geng,Liangnan Cui,Kevin H. Mayo,Yifa Zhou,Hairong Cheng,Guihua Tai
Sunflower pectin is widely used as a food additive due to its gelling and stabilizing properties. However, its bioactive potential remains poorly understood. Here, we explored its effect on defecation. Using a diphenoxylate-induced constipation mouse model, we found that native sunflower pectins did not significantly promote defecation. Subsequently, we investigated whether they could be activated via biotransformation. For this, we enzymatically hydrolyzed the pectin and produced a number of fragments that covered a wide range of molecular weights (0.5 to 30 kDa) in two esterification states (0% and 10% methyl esterification). Interestingly, all fragments exhibited defecation-promoting effects. Moreover, the effect progressively increased as the molecular weight decreased, a trend that was observed with both esterified and non-esterified fragments. Comparative studies identified E3 as the most effective fraction. E3 also displayed a prebiotic effect in the gut of model mice. Structural analysis indicated that E3 comprises oligogalacturonides with degrees of polymerization from one to six, mainly DP3 and DP4. Overall, our study reveals an inverse correlation of molecular weight with defecation-promoting activities, and offers a simple and scalable approach to convert ineffective pectin into effective oligogalacturonides that have the potential to become functional food ingredients.
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ACS Food Science & Technology
·
2026
·Vol. 6
·期 8
·2570-2583
·
IF 3
He Wanjun,Lv Danyu,Wu Qingxiao,Xu Huanyu,Guan Yongguang,Zeng Xin-An
Litchi
( L. chinensis Sonn.) is a
perishable fruit that is vulnerable to oxidative browning and fungal
infection. Herein, ferulic acid and natamycin were chosen as the antioxidant
and antimycotic agents, respectively. To improve their water solubility,
we used CD-MOF-1 to encapsulate ferulic acid. Meanwhile, natamycin
was encapsulated with gum arabic and pullulan. The most homogeneous
and stable natamycin nanocapsules were fabricated through stirring
0.5 mg/mL natamycin using 2.5% (w/v) gum arabic-pullulan (1:1, w/w,
1.25% each) in water. The main encapsulation mechanisms of ferulic
acid and natamycin were electrostatic interactions between the carboxyl
groups of ferulic acid and K + ions from CD-MOF-1 and hydrophobic
interactions between the macrocyclic lactone ring of natamycin and
the protein part of gum arabic, respectively. In addition, pullulan
was indispensable for stabilizing natamycin. The antioxidant and antifungal
composite sol presented 99.85% oxidation inhibition and 79.06% mycelial
growth inhibition and effectively delayed the oxidative browning and
fungal decay on litchi pericarps.
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ACS Applied Polymer Materials
·
2026
·
IF 5.2
Nanlan Shen,Zhenfeng Huang,Weiyu Liu,Shuai He,Jun Zhang,Yaqiao Jie,Luzhi Zhou,Chuanbai Yu,Hai-Bo Zhao,Wenhui Rao
Water-based flame-retardant coatings have attracted more and more attention as versatile strategies for improving the fire safety of flammable polymeric materials. However, the perfect combination of environmental protection, water resistance, durability, optical transparency, and strong interface adhesion is still extremely challenging. Herein, we report a biobased, transparent, and multifunctional flame-retardant coating (GBPK-LDH) constructed from gum arabic, phytic acid, borax, and KH560, reinforced by layered double hydroxide (LDH) nanosheets. The coating has high optical transparency, excellent water resistance, and various organic solvent resistance. Due to the synergistic effect of abundant hydrogen bonds, dynamic borate interaction, and silane-induced interface coupling, GBPK-LDH coating has strong adhesion to different substrates, with a maximum shear strength of 1.73 MPa, and has a self-healing behavior triggered by humidity and temperature. When coated on flexible polyurethane foam (FPUF), the coated foam shows excellent flame retardancy and achieves a rapid self-extinguishing effect. It is worth noting that compared with the control FPUF, the peaks of heat release rate and total smoke production were reduced by 42.5 and 50.0%, respectively. Moreover, the GBPK-LDH coating also helps to improve the mechanical properties of FPUF, including a significant increase in tensile strength, while maintaining excellent resilience and constant thermal insulation. Furthermore, the coating can also provide effective fire protection for other flammable substrates, such as rigid polyurethane foam and wood, highlighting its wide applicability. This study proposes a sustainable and scalable strategy for the development of high-performance biobased multifunctional water-based coatings.
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FOOD CHEMISTRY
·
2025
·
IF 9.8
Chencheng Wei,Jiheng Zhang,Gaozheng Li,Yi Zhong,Zhaoting Ye,Handong Wang,Kezhi Li,Yuanzi Wu,Yuezhong Wu,Heng Luo,Qi Sun,Zuquan Weng
Formaldehyde (FA), a known carcinogen, is occasionally used illegally as a preservative in seafood, while traditional detection methods for FA residues often fail to meet the practical needs for nondestructive detection. In this study, a approach was developed by combining a portable Raman spectrometer with the InceptionTime deep learning model without sample pretreatment. Model were trained by FA-negative and FA-positive Raman spectral data from the shrimp surface and achieved accuracies of 84.40 % and 85.17 % at detection thresholds of 5 mg/kg (the primary safety detection threshold) and 100 mg/kg (the abuse-level contamination threshold), respectively. Metabolomic analysis and weight visualization indicated that the model particularly focused on Raman peaks associated with specific amino acids and astaxanthin-binding proteins. Two amino acid metabolites, timonacic and spinacine, were also identified as direct indicators of FA addition. Our model offers a field-deployable and practical approach for real-time and on-site FA detection scenario.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Yun-shan Wei,Wei Gao,Yang Li,Kun-lun Liu
Ferric pyrophosphate (FePP) is commonly used in fortified foods because of its subtle metallic odor/color. However, the insoluble nature of FePP restricts its intestinal absorption, thereby diminishing its efficacy. Liposomes can enhance the transmembrane absorption of encapsulated ingredients but encounter difficulties when encapsulating insoluble compounds. In this study, it was initially attempted to boost FePP solubility by reducing its particle size. Nevertheless, nanoscale FePP (N-FePP) exhibited a strong tendency to aggregate. To address this, an ultrasound-assisted carboxymethyl cellulose modification was innovatively proposed. This method effectively prevented N-FePP aggregation by increasing its charge density from −23 mV to −40 mV and decreasing surface tension of the N-FePP suspension from 71.1 mN/m to 43.8 mN/m. Consequently, the modified N-FePP (MN-FePP), with a particle size of 237 nm and excellent dispersion, was successfully obtained. The encapsulation efficiency of MN-FePP in liposomes (MN-FePP-Lip) was significantly enhanced compared to that of N-FePP (74.9 % vs. 27.8 %). Furthermore, in comparation with the unencapsulated MN-FePP, MN-FePP-Lip exhibited increased cellular absorption efficiency (intracellular iron concentrations of 171.54 μmol/L vs. 115.24 μmol/L) and total antioxidant levels (9.04 U/mg prot vs. 7.28 U/mg prot) in cells. Therefore, the MN-FePP-Lip developed in this study shows great potential as a novel iron fortifier.
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JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2026
·
IF 6.7
Yibing Wang,Qianqian Xuan,Tiantian Yuan,Baojin Wang,Zihan Zhang,Xiaoqian Xing,Xinyi Yang,Chen Meng,Kevin H. Mayo,Fan Li,Yifa Zhou,Ye Yuan
The degradation of complex plant polysaccharides, particularly Rhamnogalacturonan I (RG-I) pectin, is essential for unlocking the value of biomass. This study focuses on the enzymatic toolbox of Penicillium oxalicum for efficient RG-I breakdown. Here, we recombinantly expressed 15 novel pectinolytic enzymes and characterized their biochemical functions. The enzyme system consists of backbone-cleaving rhamnogalacturonan hydrolases and lyases, along with side-chain–degrading enzymes. Specific endo-β-galactanases (GH30, GH43, GH53) and an exo-β-galactosidase (GH35) collaboratively hydrolyze galactan side chains. Meanwhile, α-arabinanases (GH43) and exo-α-arabinofuranosidases (GH54, GH62) work synergistically to degrade arabinan side chains. Through coordinated action, these enzymes achieve complete degradation of complex RG-I structures. Our findings provide a comprehensive enzyme set for targeted polysaccharide deconstruction, offering valuable resources for biomass conversion and pectin valorization in industrial applications.
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Frontiers in Cellular and Infection Microbiology
·
2026
·
IF 5.5
Yumeng Chen,Zhenghai He,Xiaowen Shi,Jun Zhang,Lejiao Mao,Zhaoxia Lu,Zhen Zou,Chengzhi Chen,Xia Qin,Yishi Li
Introduction The gut-lung axis plays a critical role in the pathogenesis of acute lung injury (ALI). While intestinal microbiota, particularly Akkermansia muciniphila (AKK), has been linked to the regulation of ALI in adult murine model, its impact on juvenile hosts, who exhibit heightened susceptibility to lipopolysaccharide (LPS)-induced ALI, remains poorly understood. Moreover, despite microencapsulation enhancing the probiotic gastrointestinal survival and colonization of probiotics, the therapeutic potential of microencapsulated AKK (AKK-MC) in juvenile murine ALI has not been explored. Methods In this study, juvenile mice were orally gavaged with live AKK or AKK-MC for 14 days, with LPS-induced ALI established on day 11. Lung tissues were analyzed for morphological changes and inflammatory cytokine analysis. Bronchoalveolar lavage fluid (BALF) was collected for total cell counts and protein concentration. Macrophages and neutrophils infiltration in the lungs was quantified via immunofluorescence staining. Four segments of the intestinal tract (jejunum, ileum, cecum, and colon) were harvested for histological analysis using hematoxylin and eosin (H&E), Alcian blue-periodic acid-Schiff (AB-PAS), and toluidine blue (TBO) staining. These evaluations included measurements of villus height to crypt depth, intestinal injury scoring, and counts of goblet and mast cells. Results AKK-MC treatment resulted in higher fecal abundance of AKK compared to AKK group. AKK treatment attenuated LPS-induced weight loss and mitigated lung damage. This was evidenced by reduced protein concentration and cell counts in BALF, downregulation of Tnf-α and Il-1β expression, improved lung histology, and decreased macrophage infiltration and neutrophil extracellular traps formation. In the intestine, AKK treatment restored mucosal architecture, increased villus height to crypt depth ratios, maintained goblet cell populations, and reduced mast cell infiltration across intestinal segments. Conclusion These results demonstrate that microencapsulation enhances AKK’s efficacy in ameliorating LPS-induced ALI in juvenile mice through gut microbiota modulation. This study provides a crucial foundation for the development of probiotic-based interventions in pediatric ALI.
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