Browsing by Author "Sierra Rosales, Paulina"
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Sierra Rosales, Paulina; Toledo Neira, Carla; Squella Serrano, Juan (Elsevier B.V., 2017)© 2016 Elsevier B.V.Food colorants are chemicals added to foods and soft drinks during manufacturing or processing. However, some of these chemicals represent potential risks to human health, especially if they are consumed ...
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Sierra Rosales, Paulina; Berríos, Cristhian; Miranda Rojas, Sebastián; Squella Serrano, Juan (Elsevier Ltd, 2018)Sunset yellow, Allura red and Ponceau 4R are azo-colorants with similar chemical structures. These colorants were studied by electrochemical methods at a glassy carbon electrode in phosphate buffer solution (pH 7.0), ...
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Báez, Daniela F.; Tapia, Felipe; Sierra Rosales, Paulina; Bollo Dragnic, Soledad (Wiley-VCH Verlag, 2019)A novel and useful method to catalyze the electro-oxidation of nicotinamide adenine dinucleotide (NADH) over a glassy carbon electrode (GCE) modified with graphene oxide (GO) is presented. Based on the presence of oxygen ...
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Sierra Rosales, Paulina; Toledo Neira, Carla; Ortúzar-Salazar, Pía; Squella Serrano, Juan (Wiley-VCH Verlag, 2019)A fast and simple electrochemical sensor is presented for the determination of allura red and brilliant blue in isotonic sport drinks, using a glassy carbon electrode modified with multi-walled carbon nanotubes. The ...