Food Packaging and Shelf Life
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2025
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IF 10.6
Xin Ding,Yiming Zhao,Xin Chen,Yanyan Huang,Zhihao Lin,Jing Wang,Ge Chen,Guangyang Liu,Xiaomin Xu,Bining Jiao,Xijuan Zhao,Donghui Xu
Chitosan film is frequently used to preserve food. However, the stability of chitosan film is poor, so it is crucial to strengthen the stability, anti-ultraviolet, antibacterial activity, anti-oxidation and continuous fresh-keeping activity of chitosan film. In this work, paeonol@ZIF-8 and Ag 2 CO 3 /Ag 2 O nano-heterojunctions were dispersed into chitosan/kudzu-based solution by matrix mixing and solution casting method, which successfully prepared a biodegradable nanocomposite film and used it for preservation of raspberry. Moreover, ZIF-8 provided a large number of active sites to PAE. The loading rate of PAE@ZIF-8 was 36.33 ± 0.82 % by a simple one-pot process. The paeonol@ZIF-8 had the effect of slow release in different food environments and intelligent response to pH. The Ag 2 CO 3 /Ag 2 O nano-heterojunctions also cooperated to inhibit bacteria by releasing silver ions. Meanwhile, the physical and chemical properties of chitosan film were improved, which could make it more suitable for food packaging. The improved film could block 90.32 % of UV–visible light. Moreover, its antioxidant and antibacterial properties were increased by 1.24 times and 4 times, respectively. It could extend the shelf life of raspberries to 5 days as the hydrophobic film. The nanocomposite film also effectively maintained cucumber slice quality. It also found that the migrating silver ion content of raspberry and cucumber slice complied with EU food safety law regulations. Importantly, the nanocomposite film was degradable and did not affect the germination and growth of the seed. Our work provides a sustainable multifunctional food packaging material that can be used to preserve perishable foods.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Yue Hu,Lijiu Cao,Yunpeng Gong,Xu Ma,Yufang Chen,Tao Jin
Formaldehyde sensors represent an effective technology for real-time, online monitoring of formaldehyde concentrations. The selectivity of gas-sensitive materials for formaldehyde is a fundamental determinant of sensor performance and is crucial for the development of formaldehyde sensing technology. In this work, Sn-doped Zn-MOFs were employed to fabricate SnO 2 /ZnO micro-nano materials, and their selective response behaviors to formaldehyde were systematically explored. The results demonstrate that 5 % SnO 2 /ZnO, prepared with 5 % Sn doping, exhibits exceptional selectivity for formaldehyde. Under testing conditions of 170 °C and relative humidity below 60 %, the 5 % SnO 2 /ZnO sensor achieved a selectivity coefficient of 0.87 toward 50 ppm formaldehyde, with a response value of 72.8, response and recovery times of 81/30 s, a linear regression coefficient of 0.9997, and a minimum detection limit of 0.047 ppm. Moreover, the 5 % SnO 2 /ZnO sensor demonstrates excellent selectivity, anti-interference capability, and stability for formaldehyde detection. The enhanced formaldehyde selectivity is attributed to the high specific surface area, abundant pore structure, abundant oxygen vacancies, and n–n heterojunctions present in the 5 % SnO 2 /ZnO composite.
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FOOD CHEMISTRY
·
2025
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IF 9.8
Yingli Guo,Zhixiong Zheng,Bingyu Fu,Shengxin Wen,Yu Zhou,Xingping Zhang,Hualin Yang
Ochratoxin A (OTA) as a mycotoxin has strong carcinogenicity and can affect human health. Thus, it is necessary to establish an accurate method to detect OTA. Herein, a ratiometric absorbance and fluorescence dual model immunoassay based on ZIF-8@uranine (ZIF-8@UR) and p -nitrophenol (PNP) was developed. In this new immunoassay, alkaline phosphatase-labeled secondary antibodies (IgG-ALP) were used to associate OTA with signal output. The IgG-ALP can hydrolyze 4-nitrophenyl phosphate salt (PNPP) to generate yellow PNP and phosphate (Pi). Then, the Pi triggered the decomposition of ZIF-8@UR to release UR with a fluorescence signal. The absorbance ratio of PNP and UR was taken as a ratiometric absorbance signal. The ratiometric absorbance and fluorescence modes exhibited linear ranges of 0.781–50.0 ng/mL and 1.563–100.0 ng/mL, with limits of detection (LODs) of 0.112 ng/mL and 0.147 ng/mL, respectively. Meanwhile, the new immunoassay showed high specificity for OTA and satisfactory recovery rate in actual samples.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Jialiang Pan,Chenhong Liu,Zhiqiang Wang,Wenbo Shi,Tianhao Zhao,Qingcong Wei,Qing Zhang,Zhengyu Bai
The hyperglycemic microenvironment of diabetic chronic wounds is a major driver of severe bacterial infections, excessive inflammatory responses, and impaired angiogenesis, all of which delay wound healing. To address these challenges, we prepared a glucose oxidase (GOx)–loaded zeolitic imidazolate framework-8 (GOx@ZIF-8). Furthermore, a multifunctional hydrogel (AACZ) was fabricated by incorporating 5-methylfurfural– and L-arginine–grafted alginate and maleimide–grafted chondroitin sulfate with GOx@ZIF-8 through the Diels–Alder reaction. Results showed that immobilized GOx remained active for a longer time than of free GOx. At the wound site, GOx catalyzed the conversion of excess glucose to gluconic acid and hydrogen peroxide (H 2 O 2 ). The reduced pH in the local region induced Zn 2+ release from zeolitic imidazolate framework-8, simultaneously, H 2 O 2 mediated the generation of nitric oxide (NO) from L-arginine. The synergy between Zn 2+ and NO endowed AACZ with excellent antibacterial properties. The biocompatible hydrogel promoted cell proliferation and migration, regulated local blood glucose levels, inhibited bacterial activity, alleviated inflammation and promoted angiogenesis and collagen deposition at the diabetic wound site. These findings suggest that AACZ holds promise as a responsive dressing material in healing for complex wounds.
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高影响因子
FIBERS AND POLYMERS
·
2024
·Vol. 25
·期 7
·2647-2659
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IF 2.2
Zhou Jianhua,Li Sitong,Niu Zhuanli
Combining phase change materials with textile materials is an important method to give textiles temperature regulation function. Herein, the microcapsulated phase change materials with ZnO@ZIF-8@SiO 2 -doped polymethyl methacrylate (PMMA) as hybrid shell (ZZS/PMMA MPCMs) were prepared through Pickering emulsion polymerization with n-octadecane (C18) as core and ZnO@ZIF-8@SiO 2 grafted with polyacrylic acid (MZZS) particles possessing radiation cooling performance as stabilizers. The effect of MZZS content on the morphology of phase change microcapsule, radiation cooling and temperature regulation properties of coated cotton fabrics was studied. The results indicated that when the MZZS content increased to 3.0 wt%, the prepared phase change microcapsule’s encapsulation efficiency was 50.34%, showing excellent latent heat storage and release properties. Furthermore, compared with the uncoated cotton fabric, the rising and dropping rate of the temperature of ZZS/PMMA MPCMs coated cotton fabric was much slower in different seasons, indicating excellent radiation cooling and temperature regulation performance.
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JOURNAL OF CATALYSIS
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2024
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IF 6.5
Xiaoqing Gao,Shanhui Zhu,Mei Dong,Hongyan Zheng,Yanfeng Xue,Xiaojing Cui,Yulan Niu,Weibin Fan
Highly efficient synthesis of valuable γ-valerolactone (GVL) by levulinic acid (LA) hydrogenation is of interest for biomass refinery, but it suffers from great challenge to design highly active Ru-based catalyst at low temperature. ZIF-8 derived ZnO@NC nanocomposite can firmly anchor Ru nanoparticles to create strong Ru-ZnO interfacial structure, as revealed by characterization techniques and DFT calculations. By optimizing Ru content and ZnO particle size, Ru/ZnO@NC achieved excellent reaction activity with a turnover frequency (TOF) of 6032 h −1 at low temperature of 40 °C, which is never reported before. After etching the accessible ZnO, the TOF value was significantly declined to 125 h −1 on Ru/ZnO@NC-HF owing to the lack of effective Ru-ZnO interface. DFT calculation results demonstrate that the Ru-ZnO interfacial structure can facilitate the activation of intermediate CH 3 CHOCH 2 CH 2 COOH* and remarkably decline the activation energy barrier of rate-determining step (CH 3 CHOCH 2 CH 2 COOH + H = HPA) from 1.28 eV to 0.82 eV, thus leading to excellent activity of LA hydrogenation at low temperature.
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MATERIALS CHEMISTRY AND PHYSICS
·
2024
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IF 4.3
Jinyu Liu,Huajuan Yu,Wenzi Huang,Zhe Zhang,Wei Shang,Jiqiong Jiang,Yuqing Wen
Magnesium is a promising anode material . However, the magnesium anode will quickly react with the electrolyte to form an ion-insulated passivation film, resulting in voltage hysteresis. Because the magnesium anode is easily corroded, it leads to a decrease in its electrochemical performance. In this paper, the anode of the magnesium battery was modified by ZIF-8 coating. The ZIF-8 coating can largely prevent contact between water in the solution and the surface of the magnesium anode, which can inhibit the passivation of the magnesium anode. The voltage hysteresis time is significantly reduced from 4 s before modification to 0.3 s, which also effectively reduces the resistance of the battery. Compared with the unmodified magnesium battery, the modified magnesium battery has a larger initial voltage and a longer discharge platform. The anode utilization rate is doubled compared with that before modification, and the specific energy density is also greatly improved. The ZIF-8 coating with porous network structure and hydrophobicity can slow down the infiltration of corrosive substances to some degree, prolong its transmission path, and provide better protection for the magnesium anode.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Li Zhao,Ruiying Zhu,Hong Ma,Xiaofang Pan,Xuan Luo,Xiaobo Gong
Efficient electrochemical advanced oxidation processes (EAOPs) based on carbon catalysts are highly promising candidates for green environmental remediation technologies. Wood derived N-doped porous carbon (WNPC) was prepared the balsa wood with in-situ growth of zeolitic imidazolate framework-8 (ZIF-8) was used as precursor. WNPC acted as self-supporting electric Fenton cathode with high yield and selectivity (96 %) of in-situ H 2 O 2 generation, which effectively avoided the use binder for powder material. Owing to abundant N-doping and oxygen functional groups, the H 2 O 2 yield of WNPC was three times that of balsa wood derived carbon (WC) in electro-Fenton system. The graphite-N promoted the electron transfer, while the pyridinic-N could enhance the selectivity of the 2e-ORR for H 2 O 2 generation. Furthermore, the specific surface area of WNPC was 10 times of WC, with improved hydrophilicity and accelerated electron transfer. The removal efficiency of tetracycline hydrochloride (TC) achieved 91 % within 120 min in electro-Fenton system with WNPC and Fe 2+ , which was much higher than that with WC (63 %). Free radical scavenging and electron paramagnetic resonance experiments confirmed that ·OH and O 2 – · were the main active substances for TC degradation in electro-Fenton system. In addition, WNPC has good stability, reusability, and comparable degradation performance of various organic pollutants, and also had efficient degradation performance with actual water. This research proposed a novel strategy to construct efficient electro-Fenton catalyst with wood as precursor, which provides an advancing electrocatalytic methods to achieve efficient and environmentally conscious water purification.
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ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Quan Li,Ruijie Wang,Jinfang Xue,Ruiyu Wang,Shun Zhang,Hai Kang,Yang Wang,Huadong Zhu,Chuanzhu Lv
The development of growth factor-free biomaterials for bone tissue regeneration with anti-infection and anti-inflammatory activities remains challenging. Black phosphorus nanosheets (BPNs), with distinctive attributes, including photothermal conversion and calcium ion chelation, offer potential for use in bone tissue engineering and infection prevention. However, BPNs are prone to oxidation and degradation in aqueous environments, and methods to stabilize BPNs for long-term bone repair remain insufficient. Herein, zeolitic imidazolate framework-8 (ZIF-8) was used to stabilize BPNs via in situ crystallization onto the surface of BPNs (BP@ZIF-8 nanocomposite). A novel injectable dual-component hydrogel comprising gelatin methacryloyl (GelMA) and methacrylate-modified hyaluronic acid (HAMA) was used as a BP@ZIF-8 nanocomposite carrier (GelMA/HAMA/BP@ZIF-8). The BP@ZIF-8 nanocomposite could effectively protect internal BPNs from oxidation and enhance the long-term photothermal performance of the hydrogel in both in vitro and in vivo settings. The GelMA/HAMA/BP@ZIF-8 hydrogel was injectable and exhibited outstanding performance for photothermal conversion, mechanical strength, and biodegradability, as well as excellent photothermal antibacterial activity against Staphylococcus aureus and Escherichia coli in vitro and in an in vivo rat model. The GelMA/HAMA/BP@ZIF-8 hydrogel also provided a microenvironment conducive to osteogenic differentiation, promoting the transformation of M2 macrophages and inhibiting inflammatory responses. Furthermore, the hydrogel promoted bone regeneration and had a synergistic effect with near-infrared irradiation in a rat skull-defect model. Transcriptome sequencing analysis revealed that the PI3K-AKT- and calcium-signaling pathways may be involved in promoting osteogenic differentiation induced by the GH-BZ hydrogel. This study presents an innovative, multifaceted solution to the challenges of bone tissue regeneration with antibacterial and anti-inflammatory effects, providing insights into the design of smart biomaterials with dual therapeutic capabilities.
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JOURNAL OF MEMBRANE SCIENCE
·
2024
·
IF 8.4
Yuanyuan Wang,Suyue Zhong,Shumin Li,Yangyang Dai,Wenjun Su,Jian Li
Rapid industrialization poses a serious threat to the balance of ecosystems and environmental sustainability, and the application of membrane technology is an effective way to alleviate this situation. Two-dimensional (2D) MXene nanosheets are superior materials for constructing high-performance separation membranes, but their biggest drawback is that they are prone to agglomeration. After alkalizing them, the obtained alkaline MXene (TCOH) nanosheets have hydroxyl-rich surfaces, stabilized structure and great affinity for CO 2 . Based on this, a self-supported TA-ZIF-8/TCOH@Pebax mixed matrix membranes (MMMs) with block polymer Pebax-1657 as matrix and TA-ZIF-8/TCOH as composite filler were prepared in this work. ZIF-8 was modified with tannic acid (TA) to enrich the surface with hydroxyl groups, yielding TA-ZIF-8 that is both pro-CO 2 and well interfacially compatible. The using of TA-ZIF-8 not only improves the selectivity of the separation membrane, but also its mutually repulsive electrostatic force with TCOH can expand the layer spacing of TCOH nanosheets as much as possible, which leads to a rich gas transportation channel of the membrane. Experiments have shown that the prepared TA-ZIF-8/TCOH@Pebax MMM had outstanding separation performance beyond the 2019 Robinson upper bound when the content of TA-ZIF-8 was appropriate. Also, the TA-ZIF-8/TCOH@Pebax MMM showed superior thermal stability, durability and mechanical properties. In summary, the strategy of combining nanoparticles and nanosheets as composite fillers in this study provides an effective way to regulate the low permeance of MMMs. In the meantime, the application of TCOH provides a novel idea for further research on gas separation membranes.
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高影响因子
Sustainable Materials and Technologies
·
2025
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IF 9.2
Hui Li,Ronghao Wu,Long Zhou,Zuliang Chen
In this study, a novel C-ZIF-8@Fe/REEs composite, fabricated from one-step pyrolysis using ZIF-8@Fe adsorbed with rare earth elements (REEs) as precursors was successfully used to activate peroxymonosulfate (PMS) for efficient oxidation of Bisphenol A (BPA). The as-prepared C-ZIF-8@Fe/REEs exhibited high PMS activation performance, with an BPA removal efficiency exceeding 95 % within 120 min. Characterizations revealed that the REEs introduction increased the exposure of active sites, and facilitates the electron transfer. Electron paramagnetic resonance analysis and quenching tests confirmed that both radical (·OH, ·SO 4 − ) and non-radical ( 1 O 2 , high-valent metals, and electron transfer) pathways were involved in BPA degradation. Reasonable BPA degradation pathways were proposed by analyzing the results of LC-MS and DFT calculations. Additionally, toxicity assessments demonstrated a significant reduction in the toxicity of degradation products. Finally, the synthesized composite exhibited excellent reusability and stability in real wastewater fixed column bed experiments, with the removal efficiency still be higher than 70 % after 11 h operation. These findings demonstrate that the recovery REEs from mining wastewater is an effective strategy in developing a highly efficient Fenton-like catalysts, and also highlight the promising role of using C-ZIF-8@Fe/REEs in wastewater treatment, particularly for the removal of organic contaminants.
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PHARMACEUTICAL CHEMISTRY JOURNAL
·
2024
·Vol. 57
·期 8
·1179-1188
·
IF 0.8
Pan Miao,Yuan Jia,Tang Qin,Wu Yajing,Peng Yu,Zhang Jinyin,Ma Hang,Li Xuegang
Antibiotic resistance is a major problem in the treatment of Helicobacter pylori (H. pylori). Berberine (BBR) has proven to be a promising alternative, though it is less effective than antibiotics. Structurally modified BBR might improve the anti-H. pylori activity. In this study, 8-octyl berberine (OBBR), a BBR derivative, was investigated for the activity and mechanism of action against H. pylori. The results showed that the anti-H. pylori activity of OBBR was significantly higher than that of BBR (about 64 times) and close to amoxicillin. Surprisingly, OBBR was not resistant to H. pylori after 45 generations of induction and showed synergistic effect with amoxicillin in vitro. Regarding the mechanism, OBBR changed the morphological structure of bacteria and caused the outgrowth of phosphatidylserine on the cell membrane, thereby increasing its permeability. Moreover, OBBR inhibited the urease activity, down-regulated the mRNA levels of flagellar genes flaA and flaB, and reduced the motility of H. pylori, thus inhibiting intra-gastric colonization. In an animal model of H. pylori infection, OBBR was found to have a certain effect on the clearance of H. pylori in mice. An excellent anti-H. pylori activity and low drug resistance of OBBR suggest that structural modification of the BBR scaffold may be a favorable approach to the development of promising antibiotics for the treatment of H. pylori.
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