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Development of halochromic labels based on binary systems of cationic guar gum and κ-carrageenan loaded with alizarin red S for monitoring milk and seafood freshness

文献类型： 外文期刊

作者： Chen, Jiaci 1 ; Zhang, Juan 1 ; Liu, Chuan 1 ; Sun, Yumeng 2 ; Han, Xiaoxu 3 ; Sun, Xiaoyun 1 ; Pei, Xiaoyan 3 ; Huang, Fengchun 1 ; Li, Xiangyang 2 ; Chen, Ailiang 1 ;

作者机构： 1.Chinese Acad Agr Sci, Inst Qual Stand & Testing Technol Agroprod, Key Lab Agroprod Qual & Safety, Beijing 100081, Peoples R China

2.Beijing Univ Agr, Fac Food Sci & Engn, Beijing Lab Food Qual & Safety, Beijing Key Lab Agr Prod Detect & Control Spoilage, Beijing 102206, Peoples R China

3.Natl Ctr Technol Innovat Dairy, Hohhot, Inner Mongolia, Peoples R China

关键词： Indicating labels; Food spoilage; Intelligent food packaging; pH sensing; Milk and seafood

期刊名称：FOOD HYDROCOLLOIDS （ 影响因子：11.0； 五年影响因子：11.3 ）

ISSN： 0268-005X

年卷期： 2024 年 156 卷

页码：

收录情况： SCI

摘要： Monitoring of food quality, in particular, high-protein food quality, is an important component in ensuring food safety and human health. In this research, a feasible and easy solution casting and solvent evaporation strategy was adapted to fabricate alizarin red S (ARS)-loaded halochromic cationic guar gum (CGG) and kappa -carrageenan (CAR) blend packaging labels to improve its good physical strength, multifunctional acid - base responsive characteristics, and water barrier properties. The findings indicated that incorporating CAR at 40% polymer solid mass achieved higher tensile strength (21.0 +/- 1.77 MPa), water resistance (29.92 +/- 6.61% solubility), and thermal stability, which can be attributed to good compatibility between CGG and CAR. The results obtained from FT-IR, XRD, and SEM analyses demonstrate that the incorporation of ARS exhibits non-covalent bonding with the polymer blend matrix through electrostatic interactions and hydrogen bonding, thus reducing its crystallinity and restructuring the CGG-CAR matrix disorderly. The prepared indicating label films presented visual recognition of ammonia and trimethylamine (TMA-N) at 0.008 mM in 6 min (the total color difference ( Delta E) for TMA-N is >11.89), and can be reused at least six times. Moreover, the color of ARS at different pH values remains persistent for at least 180 days. The practical applications show that the films, as indicator labels, can realize real-time, accurate, and visual dynamic monitoring of seafood (shrimp) and milk by engendering three chromatic stages discernible by the naked eye (fresh, spoiling, and spoiled). The Delta E for monitoring subfresh milk and shrimp reached as high as 14.91 and 13.32, respectively.

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