Journal
FOOD PACKAGING AND SHELF LIFE
Volume 28, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.fpsl.2021.100634
Keywords
Colorimetric sensor; Nano technology; Freshness; Seafood; Volatile base nitrogen
Categories
Funding
- Youth Top Talent Project of Hebei Provincial Department of Education [BJ2020060]
- Young Scholar Scientific Research Foundation of Hebei Agricultural University [YJ201946]
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Seafood spoilage can lead to food waste and foodborne illnesses, emphasizing the need for real-time freshness monitoring. The development of easily operated and non-destructive sensing technologies is crucial for seafood freshness detection. Colorimetric indicators show promise in providing visible and easily understandable real-time indicators for seafood freshness monitoring.
Seafood spoilage could cause food waste and also serious foodborne disease because of the specific organisms and their metabolites. Therefore, it is important to monitor their freshness in the supply chain. In most cases, their spoilage has been determined by the content of volatile base nitrogen, adenosine triphosphate or the total viable count. However, these destructive detection methods are tedious and time consuming. Hence, it is highly desirable to develop easily operated and non-destructive sensing technologies for real-time detection. A lot of freshness indicators have emerged up to now. Colorimetric indicators are particularly beneficial to accompany use-by dates in food packaging as real-time indicators because they produce visible color changes to the naked eye, which can be easily understood by consumers and non-specialists. Numerous studies have considered the colorimetric indicators to monitor seafood freshness in recent years. This paper mainly focused on colorimetric indicators stimulated by volatile base nitrogen. The most traditional materials used in these indicators are also discussed. The challenges and opportunities in the systems are introduced in this context as well based on the published literature.
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