Bouftou Abderrahim, Aghmih Kaoutar, Belfadil Doha, Lakhdar Fatima, Gmouh Said, Majid Sanaa
Laboratory of Materials Engineering for the Environment and Valorization (GeMEV), Faculty of Sciences Aïn Chock, Hassan II University of Casablanca, 5366 Casablanca, Morocco.
Laboratory of Marine Biotechnology and Environment, Faculty of Sciences, Chouaib Doukkali University, BP 20, 24000 El Jadida, Morocco.
Food Sci Biotechnol. 2024 Aug 15;34(2):337-348. doi: 10.1007/s10068-024-01662-5. eCollection 2025 Jan.
The objective of this study was to produce new active and intelligent high performance colorimetric films based on cellulose acetate (CA), and to evaluate the synergistic effect of thymol (THY) and anthocyanin (ANT). The colour films showed significant reactivity to pH change, and the films became thicker in the presence of glycerol (0.200 ± 0.05). FTIR and SEM images showed a homogeneous distribution and new interactions created between THY, ANT and CA, which modified the thermal properties. This behaviour was also confirmed by XRD analysis, which showed a reduction in film crystallinity with increasing anthocyanin concentration. In addition, the incorporation of ANT improved the mechanical properties by reducing the tensile strength (0.075 ± 0.021 MPa), the biodegradability of the films in the soil after 60 days and also the water vapor transmission rate (14.81 g mm h). The films showed synergistic antibacterial activity and the application trials showed colour changes that were highly visible to the naked eye, with the deterioration of the fish, suggesting a promising application for these films as an indicator of fish freshness.
本研究的目的是制备基于醋酸纤维素（CA）的新型活性智能高性能比色膜，并评估百里香酚（THY）和花青素（ANT）的协同效应。彩色薄膜对pH变化表现出显著的反应性，并且在甘油存在下薄膜变厚（0.200±0.05）。傅里叶变换红外光谱（FTIR）和扫描电子显微镜（SEM）图像显示THY、ANT和CA之间分布均匀且形成了新的相互作用，这改变了热性能。X射线衍射（XRD）分析也证实了这种行为，其表明随着花青素浓度的增加薄膜结晶度降低。此外，ANT的加入通过降低拉伸强度（0.075±0.021兆帕）、提高薄膜在土壤中60天后的生物降解性以及水蒸气透过率（14.81克·毫米/小时）改善了机械性能。薄膜表现出协同抗菌活性，应用试验表明随着鱼的变质肉眼能明显看到颜色变化，这表明这些薄膜作为鱼新鲜度指标具有广阔的应用前景。
