ArticleACS applied materials & interfaces2022
Easy Nitrite Analysis of Processed Meat with Colorimetric Polymer Sensors and a Smartphone App.
Article in ACS applied materials & interfaces, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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10 citing papers in PubMed.
- The fabrication of novel Ce-MOGs with effective nitrite detection performance in food.Mikrochimica acta · 2026Article
- Portable Multispectral Imaging System for Sodium Nitrite Detection via Griess Reaction on Cellulose Fiber Sample Pads.Sensors (Basel, Switzerland) · 2025Article
- An Investigation into Anion Sensing of the Molecular Aggregate of 4-(Pyrrol-1-yl)pyridine and Its Derivatives.Molecules (Basel, Switzerland) · 2024Article
- A New, Rapid, Colorimetric Chemodosimeter, 4-(Pyrrol-1-yl)pyridine, for Nitrite Detection in Aqueous Solution.ACS omega · 2024Article
- Sensory Polymers: Trends, Challenges, and Prospects Ahead.Sensors (Basel, Switzerland) · 2024Review
- Luminescent Papers with Asymmetric Complexes of Eu(III) and Tb(III) in Polymeric Matrices and Suggested Combinations for Color Tuning.Molecules (Basel, Switzerland) · 2023Article
- Democratization of Copper Analysis in Grape Must Following a Polymer-Based Lab-on-a-Chip Approach.ACS applied materials & interfaces · 2023Article
- Technology Roadmap for Flexible Sensors.ACS nano · 2023Review
- Effect of Cold-Plasma-Treated Phosphate Solution to Substitute Partial Nitrite on the Color, Texture, and Flavor of Smoked Sausage.Bioengineering (Basel, Switzerland) · 2022Article
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12 authors.
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Abstract
We have developed an in situ methodology for determining nitrite concentration in processed meats that can also be used by unskilled personnel. It is based on a colorimetric film-shaped sensory polymer that changes its color upon contacting the meat and a mobile app that automatically calculates the manufacturing and residual nitrite concentration by only taking digital photographs of sensory films and analyzing digital color parameters. The film-shaped polymer sensor detects nitrite anions by an azo-coupling reaction, since they activate this reaction between two of the four monomers that the copolymer is based on. The sensory polymer is complemented with an app, which analyzes the color in two different digital color spaces (RGB and HSV) and performs a set of 32 data fittings representing the concentration of nitrite versus eight different variables, finally providing the nitrite concentration of the test samples using the best fitting curve. The calculated concentration of nitrite correlates with a validated method (ISO 2918: 1975) usually used to determine nitrite, and no statistically significant difference between these methods and our proposed one has been found in our study (26 meat samples, 8 prepared, and 18 commercial). Our method represents a great advance in terms of analysis time, simplicity, and orientation to use by average citizens.
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