Food Engineering Reviews

, Volume 11, Issue 4, pp 235–244 | Cite as

Intelligent Packaging with pH Indicator Potential

  • Evellin Balbinot-AlfaroEmail author
  • Débora Vieira Craveiro
  • Karina Oliveira Lima
  • Helena Leão Gouveia Costa
  • Danielle Rubim Lopes
  • Carlos Prentice


Intelligent packaging, in addition to acting as a food protection barrier, can emit a signal (electric, colorimetric, among others) in real time in response to any change in the initial packaging conditions and food quality. Packaging with pH indicators or pH sensors usually consists of two parts, a solid base and a dye sensitive to the pH change that makes up the colorimetric sensor. The dyes are extracted from various sources of fruits and vegetables or synthetics. At the beginning of the food deterioration process, alteration of the pH occurs; this change is one of the indicators of product quality. Packaging with a pH indicator is a measure that could indicate the quality of the food at the time of purchase or before consumption, making it safer for consumers. Research is being carried out with the aim of improving the characteristics and applicability of these indicators. This review paper presents research results on intelligent pH indicator packaging, with studies covering pigments, polymers, food and packaging solutions, as well as an overview of the materials/technologies used for the development, and the perspectives/challenges that involve this new technology.


Colorimetric sensor Pigments Polymers Food packaging 



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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Laboratory of Food Technology, School of Chemistry and FoodFederal University of Rio GrandeRio GrandeBrazil

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