2D-printed colorimetric paper-sensor for monitoring fish and milk freshness during the shelf life

IF 4.8 1区农林科学 Q1 FOOD SCIENCE & TECHNOLOGY

Food Bioscience Pub Date : 2024-09-05 DOI:10.1016/j.fbio.2024.105042

Shiyao Wang , Shanshan Liu , Xinxin Yang , Shihao Zhang , Xing Li , Lixin Zhang , Yisheng Chen

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引用次数: 0

Abstract

A novel colorimetric paper-sensor (CPS) in this research was fabricated by functionalizing filter paper with mulberry anthocyanin to monitor the freshness of packaged carp and milk. A 2D printer was applied to distribute uniformly mulberry anthocyanin onto the filter paper to form 10 × 10 mm² squares, whose colors had a response to ambient pH values. The obtained CPS demonstrated satisfactory stability and reliable color-rendering capacity at pH 2–12. The correlation between color variation and sample freshness was quantitatively evaluated. The application of CPS in detecting the freshness of carp and milk at 25 °C was further studied, whose results evidenced that CPS had a significant color variation when ΔE was greater than 5. Additionally, its color turned from red-violet to gray when TVB-N of carp was greater than 20 mg/mL, implying that there was a strong positive correlation between TVB-N and color variation (R = 0.515). Finally, quantitative analysis about color was conducted by the color recognition software of smartphone. The results indicated when S value (the newly defined color calculation method) was less than 50 or R value was greater than 120, milk and fish were rotten. Consequently, 2D printer could be a promising tool to fabricate intelligent packaging materials enabling monitor visually freshness.

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用于监测鱼类和牛奶保鲜期的二维打印比色纸传感器

本研究通过在滤纸上添加桑椹花青素，制作了一种新型比色纸传感器（CPS），用于监测包装鲤鱼和牛奶的新鲜度。使用二维打印机将桑椹花青素均匀地分布在滤纸上，形成 10 × 10 mm2 的正方形，其颜色对环境 pH 值具有响应。所获得的 CPS 在 pH 值为 2-12 时具有令人满意的稳定性和可靠的显色能力。对颜色变化与样品新鲜度之间的相关性进行了定量评估。结果表明，当 ΔE 大于 5 时，CPS 具有明显的颜色变化。此外，当鲤鱼的 TVB-N 大于 20 毫克/毫升时，其颜色由紫红色变为灰色，这意味着 TVB-N 与颜色变化之间存在很强的正相关性（R = 0.515）。最后，利用智能手机的颜色识别软件对颜色进行了定量分析。结果表明，当 S 值（新定义的颜色计算方法）小于 50 或 R 值大于 120 时，牛奶和鱼都是腐烂的。因此，2D 打印机是制造智能包装材料的理想工具，可以直观地监控产品的新鲜度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Food Bioscience Biochemistry, Genetics and Molecular Biology-Biochemistry

CiteScore

6.40

自引率

5.80%

发文量

671

审稿时长

27 days

期刊介绍： Food Bioscience is a peer-reviewed journal that aims to provide a forum for recent developments in the field of bio-related food research. The journal focuses on both fundamental and applied research worldwide, with special attention to ethnic and cultural aspects of food bioresearch.