FOOD CHEMISTRY
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2025
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IF 9.8
Yuxiao Hu,Zhijian Tan
Sensitive intelligent films can be used to accurately monitor food freshness. In this study, a cellulose acetate curcumin-loaded cyclodextrin (CD)-based metal-organic framework intelligent film (CA-Cur@CD-MOF) was developed to monitor shrimp freshness at different spoilage stages in real time. The mechanical, barrier, optical, and ammonia-sensitive properties of this film were studied. Notably, this film demonstrated effective ammonia-sensitive color development, reaching a Δ E value of 8.5 in 2 min under an ammonia atmosphere of approximately 0.4 mM. This intelligent film exhibits good DPPH free radical scavenging ability, high thermal stability, and excellent theoretical limit of detection (LOD). Interestingly, shrimp can be classified as “fresh”, “sub-fresh”, and “spoilage” during the monitoring of shrimp freshness. Furthermore, a significant correlation ( R 2 = 0.9641) was observed between the TVB-N and Δ E value for this film. Therefore, this intelligent film is promising for the real-time monitoring of freshness of shrimp and other protein-rich foods.
研究领域:
食品科学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
·
2023
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IF 11.2
Zongshu Xu,Ze Cheng,Qun Tang,Kangqi Huang,Heping Li,Zhiming Zou
Nowadays, there is an increasing demand for smart packaging materials capable of effectively monitoring the food freshness. In this study, new Co-based MOF (Co-BIT) microcrystals with ammonia-sensitivity and antibacterial function were constructed and then loaded within cellulose acetate (CA) matrix to create smart active packaging materials. The influences of Co-BIT loading upon structure, physical, and functional properties of the CA films were then thoroughly explored. It was observed that microcrystalline Co-BIT was uniformly integrated inside CA matrix, which caused significant promotions in mechanical strength (from 24.12 to 39.76 MPa), water barrier (from 9.32 × 10 −6 to 2.73 × 10 −6 g/m·h·Pa) and ultraviolet light protection performances of CA film. Additionally, the created CA/Co-BIT films displayed striking antibacterial efficacy (>95.0 % for both Escherichia coli and Staphylococcus aureus ), favorable ammonia-sensitivity function as well as color stability. Finally, the CA/Co-BIT films were successfully applied for indicating the spoilage of shrimp through discernible color changes. These findings suggest that Co-BIT loaded CA composite films have great potential for use as smart active packaging.
研究领域:
食品科学
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材料科学
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化学工程
✓ 已验证
DOI
PubMed
高影响因子
LWT-FOOD SCIENCE AND TECHNOLOGY
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2025
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IF 6.6
Hai Qin,Xiaoting Liao,Qun Tang,Bin Huang,Zhiming Zou,Lin Xu,Heping Li
Developing biopolymer-based smart active packaging materials with antimicrobial and colorimetric ammonia-sensitive function has become an emerging strategy to ensure food safety. To address the shortcomings of biopolymer film material with single function, weak mechanical and barrier performances, innovative corn starch (CS)-based smart active packaging film with antimicrobial and colorimetric ammonia-sensitive function was manufactured by constructing novel nano Fe-HIA complex as functional filler. Results revealed that the manufactured CS/Fe-HIA films had uniform and intact morphologies resulting from robust hydrogen bonds between CS and Fe-HIA, and displayed significantly improved performances dependent on Fe-HIA content. Specially, the CS-based smart active film with relatively high Fe-HIA content (5 wt%) was much more sensitive to ammonia, showing noticeable color transition from brown to yellow. The well distributed Fe-HIA significantly promoted hydrophobicity (96.0°), water barrier, thermal stability, mechanical strength (6.8 MPa), and UV-blocking (100 %) performances of the film. Furthermore, CS/Fe-HIA films possessed good antibacterial activity (over 90 %), long-term color stability, biocompatibility, and biodegradability. In freshness monitoring trial, CS/Fe-HIA films were proved to be effective in real-time and visual monitoring of prawn spoilage. This study presents a new strategy for creating advanced biopolymer-based antimicrobial and colorimetric ammonia-sensitive film, boosting related application in smart active food packaging.
研究领域:
食品科学
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材料科学
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生物高分子
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食品安全
✓ 已验证
产品关联
DOI
高影响因子
LWT-FOOD SCIENCE AND TECHNOLOGY
·
2025
·
IF 6.6
Jiayi Xue,Longwei Jiang,Ruoran Qin,Tiantian Liu,Hui Li,Haoqiang Wang
In this study, intelligent chitosan-curcumin aerogels were developed for real-time beef freshness monitoring. The incorporation of negatively charged chitin nanofibers (CN, 0–7 g/100 g, based on chitosan weight) controlled ice crystal growth during freezing, precisely tuning the aerogel microstructure. The 5 g/100 g CN aerogel (CS-CN5) had a uniform porous network and a compressive strength that was 118 % greater than that of the CN-free aerogel. Additionally, CS-CN5 demonstrated structural advantages such as high porosity (> 98 %) and low density (<0.02 g·cm −3 ). CS-CN5 exhibited excellent water (14.1 g/g) and oil (42.6 g/g) absorption, highlighting its potential as a food pad. This material demonstrated strong ammonia sensitivity, reusability, antioxidant stability, and antibacterial activity. Compared with films of the same composition, aerogels presented a more pronounced visual color response to beef spoilage. Owing to their porous structure, aerogels facilitate the release of antimicrobial and antioxidant agents, thereby contributing to the extension of beef shelf-life to a certain extent. This structural modulation strategy significantly enhances aerogel properties for food packaging applications.
研究领域:
食品科学
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材料科学
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生物医学工程
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智能传感
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包装工程
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食品安全
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纳米材料
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功能高分子
✓ 已验证
产品关联
DOI
高影响因子
TALANTA
·
2025
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IF 6.1
Yan Zhang,Danni Peng,Xiaohua He,Hehaoming Zheng,Jian Xiao,Duoxia Xu,Nan Yang
Given rising consumer demands for meat safety and quality assurance, developing an intuitive, cost-effective, and user-friendly sensor platform for real-time monitoring of perishable meat freshness is important. Herein, this study developed an innovative chitosan/agarose/blueberry anthocyanin (CS/AG/BA) hydrogel label system for visual real-time freshness tracking of perishable proteins through smartphone-assisted colorimetric analysis. Through systematic optimization of CS/AG compositional ratios (3:7–7:3) and pH conditions (2.0–4.0), we identified the CS:AG 3:7 -2.0 formulation as exhibiting optimal mechanical properties, water retention capacity, and ammonia sensitivity. The CS/AG/BA hydrogel label exhibited concentration-dependent chromatic transitions, progressively shifting from red to purplish-red and ultimately to blue-purple in response to increasing NH 3 concentrations within the packaged environment. The smart indicator label exhibits distinct color transitions from red to purplish-red and finally to blue-purple when monitoring refrigerated (4 °C) pork and shrimp spoilage. These visually observable color changes demonstrate excellent correlation with standard quality parameters (TVB-N content and pH values), confirming the hydrogel’s effectiveness in real-time freshness monitoring. Quantitative analysis established relationships between hydrogel RGB values and standard freshness parameters, enabling both qualitative visual assessment and quantitative evaluation of pork and shrimp quality. This dual-mode sensing platform combines the advantages of simple visual interpretation with smartphone-enabled digital quantification, offering a practical solution for real-time freshness monitoring throughout the cold chain while addressing critical needs for food safety, quality control, and consumer transparency in perishable protein products.
研究领域:
食品安全
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生物传感器
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智能包装
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食品质量监测
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比色传感
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水凝胶技术
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冷链管理
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD HYDROCOLLOIDS
·
2023
·
IF 10.7
Fenghui Wang,Cancan Xie,Hongjie Tang,Wenhui Hao,Jinyao Wu,Yue Sun,Jiapeng Sun,Yingzhu Liu,Longwei Jiang
The aim of this study was to develop intelligent/active packaging by using chitosan/esterified chitin nanofibers (CN) film matrix and anthocyanins from eggplant peel extract (EE) to monitor the freshness of pork. Fourier transform infrared spectroscopy , X-ray diffraction and zeta potential results showed that the CN filled into the film network and precisely bonded to the chitosan via electrostatic interactions and hydrogen bonding. Moreover, the incorporation of EE formed hydrogen bonds with chitosan and CN. Thermogravimetric analysis and scanning electron microscopy showed that the films became more compact and that thermal stability was improved. Hydrogen bonding, electrostatic interaction and nanofilling effects synergistically improved the mechanical and barrier properties (water vapor, oxygen and optical barrier properties) of the films with the addition of CN. When the content of CN was 5 wt%, the tensile strength, elongation at break, the water vapor and oxygen barrier properties of chitosan film were significantly increased by about 1.44, 1.52, 1.23 and 5.21 times (p < 0.05), respectively. When EE was added to the films, the antibacterial and antioxidant capacities of the film were significantly (p < 0.05) improved. All the films containing eggplant anthocyanins were sensitive to pH 3–11 buffer solutions, and the films had good ammonia-sensitivity and acid-sensitivity. Chitosan-CN-EE films effectively indicated the freshness of pork during storage. Hence, these results suggested that the chitosan-CN-EE films are promising candidates for intelligent and active food packaging applications.
研究领域:
材料科学
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食品科学
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纳米技术
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包装工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）