Colorimetric Indicator Based on Gold Nanoparticles and Sodium Alginate for Monitoring Fish Spoilage

Lissage Pierre; Julio Elías Bruna Bugueño; Patricio Alejandro Leyton Bongiorno; Alejandra Torres Mediano; Francisco Javier Rodríguez-Mercado

doi:10.3390/polym16060829

Colorimetric Indicator Based on Gold Nanoparticles and Sodium Alginate for Monitoring Fish Spoilage

Polymers (Basel). 2024 Mar 17;16(6):829. doi: 10.3390/polym16060829.

Authors

Lissage Pierre^{1

2}, Julio Elías Bruna Bugueño^{1

2}, Patricio Alejandro Leyton Bongiorno³, Alejandra Torres Mediano^{1

2}, Francisco Javier Rodríguez-Mercado^{1

2}

Affiliations

¹ Packaging Innovation Center (LABEN), Food Science and Technology Department (DECYTAL), Technological Faculty, University of Santiago de Chile (USACH), Ave. Víctor Jara 3769, Santiago 9170124, Chile.
² Center for the Development of Nanoscience and Nanotechnology (CEDENNA), University of Santiago de Chile (USACH), Santiago 9170022, Chile.
³ Instituto de Química, Pontificia Universidad Católica de Valparaíso, Valparaíso 2340025, Chile.

Abstract

In this work, a colorimetric indicator based on gold nanoparticles (AuNP) and a biodegradable and eco-friendly polymer (sodium alginate, Alg.), was developed for the real-time detection of fish spoilage products. The AuNPs and the colorimetric indicator were characterized using UV-VIS, FTIR spectroscopies, TGA, DSC, XRD, TEM, and colorimetry. The UV-VIS spectrum and TEM showed the successful synthesis, the spherical shape, and the size of AuNPs. The results indicated color changes of the indicator in packaged fish on day 9 of storage at a refrigerated temperature (5 °C. These results showed the successful application of the colorimetric indicator in the detection of TVB-N in packaged fish.

Keywords: biogenic amines; colorimetric indicator; ethylenediamine; gold nanoparticles; polymer; sodium alginate.

Grants and funding

This research was funded by the National Research and Development Agency (ANID) Folio 21211119 through the National Doctoral Scholarship and the Center of Excellence with Basal Financing (CEDENNA), grant number AFB220001.