FOOD CHEMISTRY
·
2025
·
IF 9.8
Kejin Yu,Lina Yang,Siyu Zhang
Fruits and vegetables are highly susceptible to storage conditions; therefore, the long-term preservation of fresh produce without cold-chain storage remains a remarkable challenge to food security. Herein, we synthesis a multifunctional, edible coating based on sodium alginate (SA) reinforced with nanocellulose fibers (NCFs) and chitosan (CS). The results showed that the monomers were crosslinked by hydrogen, ester bonds, and electrostatic interactions in the composite coating. Meanwhile, SA/NCFs/CS exhibited excellent mechanical properties (elongation: 101 %; tensile strength: 88.92 MPa; toughness: 6.59 MJ/m 3 ). Additionally, the composite coating displayed excellent antioxidant (96.33 %), antibacterial (99.02 %) and biocompatibility (99.99 %). The preservation experiment showed that, at 4 °C, the composite coating could extend the shelf life of bananas and strawberries to 12 days. It thus facilitates the long-term preservation of various fruit types and reduces the costs associated with cold-chain transportation. Thus, this study offers a novel perspective for developing multifunctional, edible preservation materials, providing a sustainable and effective alternative to traditional cold-chain-dependent storage methods.
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高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Yan Shen,Tianjing Zhang,Haoran Zhao,Yu Xiao,Jie Hong,Mohamed Abbas,Wanliang Yang
Portable and reusable solid-state fluorescence sensors have received much attention in the field of metal ion detection as a superior alternative to traditional liquid-based fluorescence sensors. In this study, a novel HHSS@LaVO 4 :Eu 3+ /polyacrylamide/sodium alginate (HLE/PS) hydrogel was successfully constructed for portable dynamic fluorescence switching detection of Fe 3+ and encryption of security information. The HLE/PS hydrogel was synthesized from HHSS@LaVO 4 :Eu 3+ fluorescent nanofillers embedded in a semi-IPN network of polyacrylamide (PAM) and sodium alginate (SA). The HLE/PS hydrogel has demonstrated excellent performance in the detection of Fe 3+ in aqueous solutions with high selectivity, high sensitivity, fast response (8 min), wide detection range (2–1000 μM), low detection limit (0.78 μM) and ease of use. It can be reused up to five times, underlining its utility and economy as a good performance fluorescence sensor. Notably, the quenching of Fe 3+ fluorescence by ultrasmall LaVO 4 :Eu 3+ nanoparticles on HHSS supports was significantly enhanced compared to conventional large-sized rare earth phosphor fillers. Additionally, by exploiting the reversible fluorescence switching function of the HLE/PS hydrogel, we further developed a high-security multi-layer information encryption platform. Finally, we thoroughly investigated the fluorescence response mechanism of HLE/PS hydrogels to Fe 3+ ions. This work not only provides a representative case for the preparation of packed rare-earth fluorescent hydrogels, but also demonstrates their potential as multifunctional smart luminescent materials.
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PROGRESS IN ORGANIC COATINGS
·
2025
·
IF 7.3
Jieyu Wan,Wenjie Wu,Yanqin Wang,Weijia Zhou,Jun Shao,Changfeng Wan,Haoqing Hou
The oil spills and organic wastewater is a kind of environmental pollution which attracts widely concern. Membrane separation is a potential technology to settle these wastewaters. However, the high cost, the weak antifouling property, and the less functionality of the separation materials limit their promotion. In this work, the sodium alginate/polyvinyl alcohol/graphite-phase carbon nitride (PVA@SA@CN) hydrogel composite membranes were coated on the stainless steel mesh, and the double-network composite membrane was constructed. Results indicated that the PVA@SA@CN composite membrane is superhydrophilic/underwater superhydrophobic, and this composite presents excellent anti-fouling property. Oil-water separation experiments indicated that the separation efficiency was higher than 99 % even constitutively separated for 50 times, and the highest flux reached to 4.5 × 10 3 L·m −2 ·h −1 . In addition, the PVA@SA@CN composite membrane also presented exceptional self-cleaning ability. This research provides a new approach to the field of continuous oil-water separation.
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MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Helei Yang,Pei Li,Jinfu Zhang,Zhiguo Zhu,Hua Zhou,Zhenhe Wang,Xia Sun
A portable, low-cost, and efficient sensing strategy is developed for real-time, non-destructive monitoring ammonia (NH 3 ) released to evaluate the shrimp spoilage. In this study, a colorimetric sensing hydrogel with ammonia-responsive properties is prepared by incorporating Cu 2+ into sodium alginate hydrogel. The sensor exhibits a detection limit of 1.19 ppm for NH 3 and a response time of approximately 10 min, demonstrating good sensitivity. The color changes of the colorimetric ammonia sensor are captured with a smartphone and its response values are analyzed via software. When monitoring NH 3 accumulation in shrimp stored at 4 °C, the colorimetric hydrogel shows a color change from light green to dark blue, with results indicating a positive correlation between color variation and TVB-N value changes in shrimp meat. This study demonstrates the great potential of colorimetric hydrogel gas sensors in the field of food safety supervision.
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CARBOHYDRATE POLYMERS
·
2026
·
IF 13.2
Jing-jing Fu,Si-yi Mei,Yong-qiang Chen,Xiang-yu Fu,Yong-jie Long,Jun-xin Wu,Wen-qiang Cai,Yue-wen Chen
Polysaccharide-based hydrogel microspheres have demonstrated considerable potential for functional factors intestinal-targeted delivery and ulcerative colitis (UC) treatment. However, single-polysaccharide systems often struggle to achieve both stable loading and controlled release of functional factors. In this study, protein-polysaccharide composite microspheres were developed using a dual-crosslinking strategy. Initially, curcumin (Cur) was encapsulated within Andrias davidianus collagen (ADC) or its xylose glycated form (ADCXy) to form ADC/ADCXy-Cur complexes. These complexes were then crosslinked with sodium alginate (SA) and chelated with Ca 2+ ions to construct a primary hydrogel network (ADC/ADCXy-Cur-SA). Finally, the cationic polysaccharide chitosan (CS) with colon enzymolysis targeting, mucosal adhesion and pH responsive controlled release characteristics was incorporated with ADC/ADCXy-Cur-SA to form a double cross-linked multifunctional hydrogel microsphere (ADC/ADCXy-Cur-SA-CS). Compared with ADC-Cur-SA-CS, the ADCXy-Cur-SA-CS exhibited enhanced cellular antioxidant and anti-inflammatory activity, maintained high stability in simulated gastric conditions, and enabled controlled Cur release in colonic pH environment. In vivo experiments have shown that ADCXy-Cur-SA-CS alleviated UC based on the “one stone, four birds” strategy of antioxidant, anti-inflammatory, repairing the colon mucosal barrier, and regulating the gut microbiota. This study provides an important technical and theoretical foundation for the development of multifunctional polysaccharide-based hydrogel delivery systems.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2026
·
IF 8.5
Chuyi Wang,Jingxin Chen,Nan Chen,Bingru Zhang,Wenyan Wu,Weiran Lin,Yuxin He,Jin Zhang,Yudong Lu,Zixing Yan
The half-life of the traditional Chinese medicine Anzhong Decoction (AZD) is relatively short. When administered orally, insufficient retention in the stomach and rapid clearance rates result in significantly reduced drug utilization efficiency. To address this limitation, we developed ternary composite sodium alginate/gelatin/guar gum hydrogel beads (SA/Gel/GG HBs) using ion-gelation technology. Research revealed that guar gum (GG) incorporation enhances hydrogen bonding and network heterogeneity, as confirmed by ATR-FTIR and rheological analysis. Specifically, the formulation containing 0.4% GG (SA/Gel/4GG) achieved an optimal balance of properties. It demonstrated an encapsulation efficiency of 76.09%, a loading capacity of 7.02% and a high-water retention of 85.24%. Crucially, SA/Gel/4GG sustained gastric flotation for over 6 h with a flotation rate exceeding 95.04%. This was attributed to its low-density closed-cell structure, featuring a density of 0.36 g/cm 3 and porosity of 17.10%. The optimized microsphere exhibited a first-order kinetic release mechanism with biphasic release characteristics. Within 6 h, 79.21% of AZD was released into gastric fluid, followed by sustained release in the intestine. The antioxidant activity of AZD against DPPH and ABTS was well preserved. This SA/Gel/GG system presents a promising gastric-floating oral delivery platform for traditional Chinese medicine compounds, effectively extending gastric retention and enabling controlled drug release.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2019
·
IF 3.131
Lili Wang,Yapei Luo,Heng Li,Deyou Yu,Yijia Wang,Wei Wang,Minghua Wu
In order to realize the good selective removal of Sb(III) from the multi-ions coexisting water, Sb(III)-imprinted hyperbranched polyamide–functionalized sodium alginate (IIPSA) microspheres were successfully prepared. IIPSA microspheres were characterised via FT-IR and SEM-EDS. The selective adsorption performances and reusability of IIPSA microspheres were investigated. Results showed that the optimum grafting conditions were the dosage of HA 1 g at 40 °C for 1 h and the optimum ion-imprinted conditions were the dosage of 2 wt % glutaraldehyde 100 mL at 60 °C for 2 h. Compared with non-imprinted microsphere, the maximum adsorption capacity of IIPSA microsphere improved by 52% and IIPSA microsphere had better selectivity for the removal of Sb(III) from solutions containing other ions. The adsorption mechanisms conformed to a monolayer adsorption dominated by chemical interactions with a spontaneous exothermic process. After 8 adsorption-desorption, the adsorption capacity of IIPSA microspheres retained more than 90%, and the Sb(III) selectivity was relatively stable.
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ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Shen Rui,Guo Jiawei,Ruan Hong,Li Yuqi
Advanced human–machine interface technology demands flexible wearable electronics, including sensors and energy storage. Hydrogels, crucial to these devices, are often limited by poor toughness, cracking under strain, and low ionic conductivity. To address these issues, a high-performance composite hydrogel, PAAKS (as-prepared), was prepared by incorporating sodium alginate (SA) into an interpenetrating network. SA enhances mechanical properties, resulting in a tensile fracture energy of 1641 kJ·m –3 , an elongation at break of 2260%, and a tensile strength of 5.5 kPa. It without KOH immersion, it boosts the ionic conductivity to 1.48 S·m –1 , achieving synergistic optimization of strength, toughness, and conductivity. When used as an electrolyte in flexible zinc–air batteries (FZABs), the KOH-soaked PAAKS hydrogel enabled stable charge–discharge cycling for 33 h with a specific capacity of 798 mAh·g –1 . Two series-connected batteries successfully power light-emitting diodes (LEDs) and electronic clocks. The hydrogel also demonstrated high sensitivity (gauge factor, GF = 2.28) as a strain sensor, detecting deformations from 1% to 600%, and functioned as a triboelectric nanogenerator with an open-circuit voltage of 11 V and a maximum power density of 0.027 W·m –2 . This research offers new insights for designing hydrogel electrolytes and developing stable FZABs.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2026
·Vol. 65
·期 27
·14368-14379
·
IF 3.9
Fan Zhiqiang,Chen Zhaohui,Li Li
To enhance the application potential
and added value of an independently
developed self-lubricating poly(vinyl alcohol) (PVA) interventional
microcatheter, a novel strategy for in situ formation of acrylamide/sodium
alginate (AM/SA) hydrogel coating on the surface of the PVA microcatheter
via UV light initiation was proposed. And the comprehensive effects
of key parameters including composition, light intensity, irradiation
time, and photoinitiator concentration on drug loading, release profile,
adhesion, and lubricity of the coating were systematically studied.
By adjusting the UV light intensity (20–50%), exposure time
(3–20 min), and initiator concentration (0.125–1%),
the thickness of the hydrogel coating could be controlled in the range
of 13.4 to 791 μm, significantly improving the drug loading
and release capacity of the microcatheter, from 283.45 μg/g
of pure PVA to 2070.11 μg/g, and the cumulative release within
24 h could reach 80.13%. The hydrogel coating also exhibited excellent
interface stability, achieving high adhesion energy of 201 J/m 2 at the photoinitiator concentration of 0.5%. With moderate
SA content, e.g., 5%, the surface friction coefficient of the catheter
was significantly reduced to 0.04, representing a reduction of ∼21%
compared to pure PAM coating and also better than that of pure PVA
(0.0596). This AM/SA hydrogel coating integrated the triple functionality
of drug loading, controlled drug release, and surface lubrication,
markedly enhanced the multifunctional integration and application
value of PVA catheter, and would provide a new strategy for developing
high-performance interventional medical devices used in the field
of short-term nonvascular luminal interventional procedures.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Peng Shan,Hong Wang,Zhihang Xu,Yilin Wang,Chenglong Fu,Jinwen Hu,Yehan Tao,Xiaodong Xia,Jian Du,Haisong Wang
An adsorption-triggered mechanism was proposed for on-demand release. • Acidic sites on ZSM-5/ZIF-8 possess stronger adsorption energy for biogenic amines than CA. • The mechanical and gas barrier of film were improved after introducing ZSM-5/ZIF-8. • The developed packaging effectively prolonged fish preservation at 4 °C. Active packaging with on-demand release capability has attracted increasing interest in food preservation; however, the delayed response of active agents often compromises protection during the early stage of spoilage. In this work, an adsorption-triggered release strategy was proposed by incorporating cinnamaldehyde (CA)-loaded ZSM-5/ZIF-8 nanoparticles (CA@ZSM-5/ZIF-8) into a sodium alginate (SA) matrix. Owing to the strong affinity of biogenic amines toward the adsorption sites of ZSM-5/ZIF-8, low concentrations of histamine could competitively displace the preloaded CA, thereby enabling an early and responsive release behavior. In the absence of histamine, the cumulative release of CA from the composite film remained below 10% within 12 h, whereas it increased to approximately 60% in the presence of 5.0 mM histamine. Meanwhile, the optimized film exhibited improved tensile strength (54.6 MPa), water vapor barrier performance (0.86 × 10 −10 g·m·m −2 ·s −1 ·atm −1 ), UV-shielding capability, and water resistance. The film also showed pronounced antioxidant activity (91.4%), sustained antibacterial effects against E. coli and S. aureus , and favorable biodegradability. When applied to fish preservation, the optimized film effectively extended the refrigerated shelf life to 6 days at 4 °C. This study provides a novel paradigm for on-demand release in intelligent food packaging.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Yuhan Lin,Xueyan Yan,Mengru Zhang,Chuanyi Wang
A marine biomass-based evaporator was made from Ulva prolifera and sodium alginate for green, low-cost solar desalination. • COMSOL simulation showed that the inverted cone structure promoted Marangoni convection for directional salt crystallization. • The evaporation and salt recovery rates reached values of 3.02 kg·m −2 ·h −1 and 3.13 kg·m −2 ·day −1 in 10 wt% NaCl solution. Solar-driven interfacial evaporation technology for saline water desalination, with advantages such as environmental friendliness and low cost, is of great significance for alleviating global water scarcity. However, salt scaling on the evaporator surface can reduce the evaporation rate and seriously threaten the system stability. Here, a sustainable inverted cone-shaped solar evaporator was fabricated using Ulva prolifera and sodium alginate as raw materials, achieving the synergy of efficient freshwater production and salt recovery. Under 1 sun irradiation, the fully marine biomass-based evaporator exhibited evaporation rates of 3.37 kg·m −2 ·h −1 and 3.02 kg·m −2 ·h −1 for 3.5 wt% and 10 wt% NaCl solutions, respectively, with no significant decay after 5 cycles. The unique 3D inverted-cone structure combined with the concentration gradient-induced Marangoni convection (verified by COMSOL simulation) promoted the saline radial transport and directional crystallization, enabling a salt collection rate of 3.13 kg·m −2 ·day −1 in 10 wt% NaCl. Furthermore, laboratory and outdoor performance tests using simulated seawater and real seawater demonstrated its application potential. This study provides a novel strategy for efficient seawater desalination and resource utilization. Download: Download high-res image (255KB) Download: Download full-size image
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FOOD RESEARCH INTERNATIONAL
·
2026
·
IF 8.8
Dongxia Gou,Yanqiu Guo,Fandi Hong,Fangqi Ren,Qingbo Wang,Hanwen Zhang,Yujiao Tang,Jun Zhao
A novel CS/SA/LAG/ACNS hydrogel was fabricated for beef freshness monitoring. • NaCl improved hydrogel color stability via ion-pair and network confinement. • The indicator exhibited pH responsive color changed from red to dark yellow. • Color changes correlated well with multiple beef spoilage indicators. Fresh beef is highly susceptible to quality deterioration during storage and distribution, necessitating reliable and rapid freshness indicators. In this study, a pH-responsive colorimetric chitosan-based hydrogel was developed for visual monitoring of beef freshness using anthocyanins extracted from black bean seed coats. Anthocyanins were obtained via ultrasonic extraction and stabilized with sodium chloride (NaCl, 0.1 M). The hydrogel was fabricated through physical cross-linking of chitosan, sodium alginate, and low-acyl gellan gum with 40 mg anthocyanin-enriched extract (ACNS). The CS-SA-LAG-ACNS-NaCl hydrogel exhibited favorable rheological properties (G' > G”), improved mechanical strength (compressive strength increased from 50.79 ± 0.73 N to 56.78 ± 0.42 N), and good biocompatibility (cell viability >83%). In addition, NaCl improved the color stability of the hydrogel, with the color difference (ΔE) decreasing from 11.41 to 1.71 after 7 days of storage. A distinct color change from red to dark yellow was observed as beef spoilage progressed (1–7 days), during which TVB-N increased from 4.31 ± 0.12 mg/100 g to 32.28 ± 1.34 mg/100 g, TBA increased from 0.08 mg/100 g to 1.32 ± 0.04 mg/100 g, and TVC exceeded 2.5 × 10 5 CFU/g on day 7, demonstrating its effectiveness as a visual freshness indicator with promising applications in intelligent meat quality monitoring. Download: Download high-res image (325KB) Download: Download full-size image
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危险品化学品经营许可证（带存储）