Anthocyanin food colorant and its application in pH-responsive color change indicator films

Recently, interest in smart packaging, which can show the color change of the packaging film according to the state of the food and evaluate the quality or freshness of the packaged food in real-time, is increasing. As a color indicator, a natural colorant, anthocyanin, drew a lot of attention due t...

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Published in:Critical reviews in food science and nutrition 2021, Vol.61 (14), p.2297-2325
Main Authors: Roy, Swarup, Rhim, Jong-Whan
Format: Article
Language:English
Subjects:
Anthocyanin
Anthocyanins
Antioxidants
Biodegradability
Biodegradation
biopolymer film
Carcinogens
Cardiovascular diseases
Color
color indicator
Coloring agents
Diabetes mellitus
Food
Food dyes
Food packaging
Food quality
Freshness
Indicators
Inflammation
Meat
natural colorant
Packaged food
pH effects
pH-responsive
Polymers
smart food packaging
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description Recently, interest in smart packaging, which can show the color change of the packaging film according to the state of the food and evaluate the quality or freshness of the packaged food in real-time, is increasing. As a color indicator, a natural colorant, anthocyanin, drew a lot of attention due to their various colors as well as useful functions properties such as antioxidant activity and anti-carcinogenic and anti-inflammatory effects, prevention of cardiovascular disease, obesity, and diabetes. In particular, the pH-responsive color-changing function of anthocyanins is useful for making color indicator smart packaging films. This review addressed the latest information on the use of natural pigment anthocyanins for intelligent and active food packaging applications. Recent studies on eco-friendly biodegradable polymer-based color indicator films incorporated with anthocyanins have been addressed. Also, studies on the use of smart packaging films to monitor the freshness of foods such as milk, meat, and fish were reviewed. This review highlights the potential and challenges for the use of anthocyanins as pH-responsive color-changing films for intelligent food packaging applications, which may be beneficial for further development of smart color indicator films for practical use.
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subjects Anthocyanin
Anthocyanins
Antioxidants
Biodegradability
Biodegradation
biopolymer film
Carcinogens
Cardiovascular diseases
Color
color indicator
Coloring agents
Diabetes mellitus
Food
Food dyes
Food packaging
Food quality
Freshness
Indicators
Inflammation
Meat
natural colorant
Packaged food
pH effects
pH-responsive
Polymers
smart food packaging
title Anthocyanin food colorant and its application in pH-responsive color change indicator films
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