Preparation and characterisation of pH‐responsive indicator ink for pork freshness monitoring

IF 2 4区工程技术 Q3 CHEMISTRY, APPLIED

Coloration Technology Pub Date : 2024-08-29 DOI:10.1111/cote.12784

Haichuan Hu, Jianqiang Wang, Haolin Sun, Yuheng Chen, Jinghua Chen

{"title":"Preparation and characterisation of pH‐responsive indicator ink for pork freshness monitoring","authors":"Haichuan Hu, Jianqiang Wang, Haolin Sun, Yuheng Chen, Jinghua Chen","doi":"10.1111/cote.12784","DOIUrl":null,"url":null,"abstract":"This study developed an intelligent indicator ink based on purple potato anthocyanin to detect the freshness of pork. The ink was composed of waterborne acrylic resin as a binder, with added additives such as dimethyl silicone oil, sodium polyacrylate and ethanol to improve its performance. Testing was conducted on the initial drying, viscosity, fineness, fluidity and stability of the ink, and all performance criteria met the requirements. Gradient solutions with pH 2–12 were dropped onto the ink to test their discoloration ability, which exhibited significant changes in colour with the difference in pH solutions. The indicator ink was applied to monitor the freshness of pork. After 7 days of storage at 4°C, the total volatile basic nitrogen content of the pork was higher than 25 mg/100 g, and the total number of bacteria was >9 log(CFU/g), indicating that the pork had gone rotten. The colour of the indicator ink shifted from purple to purplish blue and ultimately became deep blue. The results showed that the indicator ink provided an effective colour response in the process of pork deterioration, allowing for visual detection of its freshness.","PeriodicalId":10502,"journal":{"name":"Coloration Technology","volume":null,"pages":null},"PeriodicalIF":2.0000,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Coloration Technology","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1111/cote.12784","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, APPLIED","Score":null,"Total":0}

引用次数: 0

Abstract

This study developed an intelligent indicator ink based on purple potato anthocyanin to detect the freshness of pork. The ink was composed of waterborne acrylic resin as a binder, with added additives such as dimethyl silicone oil, sodium polyacrylate and ethanol to improve its performance. Testing was conducted on the initial drying, viscosity, fineness, fluidity and stability of the ink, and all performance criteria met the requirements. Gradient solutions with pH 2–12 were dropped onto the ink to test their discoloration ability, which exhibited significant changes in colour with the difference in pH solutions. The indicator ink was applied to monitor the freshness of pork. After 7 days of storage at 4°C, the total volatile basic nitrogen content of the pork was higher than 25 mg/100 g, and the total number of bacteria was >9 log(CFU/g), indicating that the pork had gone rotten. The colour of the indicator ink shifted from purple to purplish blue and ultimately became deep blue. The results showed that the indicator ink provided an effective colour response in the process of pork deterioration, allowing for visual detection of its freshness.

查看原文本刊更多论文

用于猪肉新鲜度监测的 pH 值响应指示墨水的制备与表征

本研究开发了一种基于紫薯花青素的智能指示油墨，用于检测猪肉的新鲜度。该油墨以水性丙烯酸树脂为粘合剂，添加了二甲基硅油、聚丙烯酸钠和乙醇等添加剂以提高其性能。对油墨的初干、粘度、细度、流动性和稳定性进行了测试，所有性能指标均符合要求。将 pH 值为 2-12 的梯度溶液滴在油墨上，测试其变色能力，结果表明，随着 pH 值溶液的不同，油墨的颜色也发生了显著变化。指示剂油墨用于监测猪肉的新鲜度。猪肉在 4°C 下存放 7 天后，总挥发性碱基氮含量高于 25 mg/100 g，细菌总数为 9 log(CFU/g)，表明猪肉已经腐烂。指示剂墨水的颜色由紫色变为紫蓝色，最后变成深蓝色。结果表明，在猪肉变质的过程中，指示剂墨水提供了有效的颜色反应，可以用肉眼检测猪肉的新鲜程度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Coloration Technology 工程技术-材料科学：纺织

CiteScore

3.60

自引率

11.10%

发文量

审稿时长

4 months

期刊介绍： The primary mission of Coloration Technology is to promote innovation and fundamental understanding in the science and technology of coloured materials by providing a medium for communication of peer-reviewed research papers of the highest quality. It is internationally recognised as a vehicle for the publication of theoretical and technological papers on the subjects allied to all aspects of coloration. Regular sections in the journal include reviews, original research and reports, feature articles, short communications and book reviews.