Experimento didático de quimiometria empregando imagens digitais obtidas por celular para determinar adulteração de azeite de oliva com óleo de soja: um tutorial, parte VI.
The aim of this manuscript was to show the concepts involving data treatment of RGB based image analysis by univariate and multivariate approaches - the latter using Partial Least Squares (PLS) - using as a practical example application the determination of extravirgin olive oil adulteration. Digital images were collected using a device made of LEDs, batteries and a smartphone and results are shown in a tutorial format using Matlab computing environment. The experiment can serve as an example for teaching the subject for undergraduate and graduate students. A proposta deste tutorial é revisitar o conceito de imagens digitais para explorar o seu uso como metodologia analítica para estimar o percentual de adulterantes em amostras de alimentos de uma maneira didática.
Main Authors: | , , , |
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Other Authors: | |
Format: | Artigo de periódico biblioteca |
Language: | Portugues pt_BR |
Published: |
Química Nova, v. 45, n. 9, p. 1167-1176, 2022.
2022-09-26
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Subjects: | Teaching experiment, Partial least squares, Adulteration, Imagem digital, Óleo de soja, Azeite, Adulteração, Digital images, Extra-virgin olive oil, |
Online Access: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/1146800 http://dx.doi.org/10.21577/0100-4042.20170946 |
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