Bibliographic citations
Egúsquiza, E., (2020). Metodología para determinar la concentración de ácido carmínico por HPLC en muestras comerciales de yogur natural [Tesis, Pontificia Universidad Católica del Perú]. http://hdl.handle.net/20.500.12404/15681
Egúsquiza, E., Metodología para determinar la concentración de ácido carmínico por HPLC en muestras comerciales de yogur natural [Tesis]. PE: Pontificia Universidad Católica del Perú; 2020. http://hdl.handle.net/20.500.12404/15681
@mastersthesis{renati/532011,
title = "Metodología para determinar la concentración de ácido carmínico por HPLC en muestras comerciales de yogur natural",
author = "Egúsquiza Quezada, Edith Julia",
publisher = "Pontificia Universidad Católica del Perú",
year = "2020"
}
The development of the food industry grows steadily fast, requiring a great use of dyes to be added to food products, providing it color and a uniform appearance that influences the consumer's perception and their purchase decision. The growing demand for food products with clean labels urges the use of normalized natural dyes as a better option to add color to foods that lack it, without changing other properties that can be altered during its processing. Given that coloring carmine (E-120) from the cochineal is one of the natural colorants with better technological characteristics, this gives the food products naturalness and great application in the dairy industry, meat, beverages, confectionery, cosmetics, etc. For this reason, it is necessary to control and verify the use of Carmine and Carmine Acid in mass consumption products, such as is the case of strawberries to replace forbidden synthetic dyes. In this sense, in the present investigation is proposed an HPLC methodology for determining the content of carminic acid in commercial samples of natural yogurt, characterizing the pure dyes by the Food Chemical Codex II (FCC II) method, by the modified FCC II method using phosphoric acid and pure solvents. It is also proposed to quantify the color and content of pure dyes in commercial samples of natural yogurt by a colorimetric technique, as well as to extract and determine the concentration of total carminic acid in commercial samples of yogurt, using the Lancaster method and HPLC, respectively. It is concluded that the FCC II method with concentrated phosphoric acid is optimal when working in the evaluation of the dyes to validate the Lancaster method, and to determine the carminic acid content in the strawberry yogurt product.
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