DETERMINATION OF ARTIFICIAL COLORS IN FOOD BY COLORIMETRY BASED ON DIGITAL.
DOI:
https://doi.org/10.66104/8307p532Keywords:
Colorimetria, RGB, Corantes artificiaisAbstract
Colors are one of the sensorial characteristics associated by the consumer as they influence the quality, flavor, sensation of sweetness, and food preference. It is still a decisive factor in the choice of food, based on this the food industry uses colors to please the consumer's eyes. The present work proposed to demonstrate the feasibility of using digital images for the purpose of analyzing food colorings and subsequently compare its results with those obtained by molecular absorption spectrophotometry in the UV-Vis region. Initially, some tests were carried out with green and yellow dyes to demonstrate the application of the proposed method. The absolute relative error using an RGB image sensor for the analyzed samples was 4.0% for the green dye and 2.5% for the yellow dye. Next, 3 samples of powdered juice were analyzed, in which the tartrazine dye levels obtained by the proposed method and the spectrophotometric method were within the limit established by Brazilian legislation for tartrazine.
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