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

Lissage Pierre; Julio Bruna; Patricio Leyton Bongiorno; Francisco Rodríguez-Mercado; Alejandra Torres

doi:10.20944/preprints202312.1410.v1

Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Version 1 : Received: 18 December 2023 / Approved: 19 December 2023 / Online: 19 December 2023 (09:07:51 CET)

In this work, a colorimetric indicator based on gold nanoparticles (AuNP) and a biodegradable and eco-friendly polymer (sodium alginate, Alg.), has been developed, for the real-time detection of fish spoilage products. AuNP and colorimetric indicator were characterized by: 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. Results indicated color changes of the indicator in packaged fish on day 9 of storage at refrigerated temperature (5ºC). These results showed the successful application of colorimetric indicator in the detection of TVB-N in packaged fish.

gold nanoparticles; polymer; colorimetric indicator; sodium alginate; biogenic amines; ethylenediamine

Chemistry and Materials Science, Nanotechnology

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

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