Integrated food quality monitoring QR code labels with simultaneous temperature and freshness sensing in real-time

IF 2.9 3区农林科学 Q2 FOOD SCIENCE & TECHNOLOGY

Journal of Food Measurement and Characterization Pub Date : 2023-06-15 DOI:10.1007/s11694-023-02007-2

Haizhai Zhang, Yuan Xu, Mengxue Luo, Chenying Zhang, Xiaoyun Gu, Zhijiang Li, Shuangli Ye

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Abstract

The shelf life of food is of great concern to food safety. This paper reports a cost-efficient integrated QR code label with dual sensing and information storage functions by printing technology, which can be applied to predict the shelf life of food products at different temperatures effectively. The QR code label includes the thermochromic zone and freshness sensing zone, which prepared by thermochromic ink and freshness sensing ink with inkjet printing and screen-printing techniques, respectively. The temperature-dependent color difference of the thermochromic zone under an external light source is obtained with a linear rescaling method. The sensitivity and reversibility of the thermochromic zone is analyzed as well, respectively. The results show that the thermochromic zone prepared by water-based ink with 18% mass fraction of thermochromic microcapsule powder has a high sensitivity, good linearity and reversibility, which can be used for real-time monitoring of temperature. Similarly, the freshness sensing zone is realized by a mixture of anthocyanin and curcumin inks with inkjet printing technique. The integrated QR code label is applied for the quality evaluation of the freshness of grass carp at 4 °C, which can effectively display the real-time temperature, freshness and the origin of food products of grass carp simultaneously, providing new ideas for the application of QR code label in smart packaging.

Graphical Abstract

Abstract Image

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集成食品质量监控二维码标签，实时同步温度和新鲜度传感

食品的保质期关系到食品安全。本文报道了一种采用打印技术，具有双传感和信息存储功能的低成本集成二维码标签，可用于有效预测食品在不同温度下的保质期。二维码标签包括热致变色区和新鲜度感应区，分别由热致变色油墨和新鲜度感应油墨采用喷墨印刷和丝网印刷技术制备而成。用线性重标度法得到了外光源作用下热致变色区的温度相关色差。并对热致变色区的灵敏度和可逆性进行了分析。结果表明，以热致变色微胶囊粉末质量分数为18%的水性油墨制备的热致变色带灵敏度高，线性和可逆性好，可用于温度的实时监测。同样，新鲜度感应区是通过花青素和姜黄素油墨的混合物与喷墨印刷技术实现的。采用集成二维码标签对草鱼在4℃下的新鲜度进行质量评价，可同时有效显示草鱼的实时温度、新鲜度和食品产地，为二维码标签在智能包装中的应用提供了新的思路。图形抽象

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来源期刊

Journal of Food Measurement and Characterization Agricultural and Biological Sciences-Food Science

CiteScore

6.00

自引率

11.80%

发文量

425

期刊介绍： This interdisciplinary journal publishes new measurement results, characteristic properties, differentiating patterns, measurement methods and procedures for such purposes as food process innovation, product development, quality control, and safety assurance. The journal encompasses all topics related to food property measurement and characterization, including all types of measured properties of food and food materials, features and patterns, measurement principles and techniques, development and evaluation of technologies, novel uses and applications, and industrial implementation of systems and procedures.