Implementação de um método robusto para o controle fiscal de umidade em queijo minas artesanal. Abordagem metrológica multivariada
This study developed and validated a method for moisture determination in artisanal Minas cheese, using near-infrared spectroscopy and partial-least-squares. The model robustness was assured by broad sample diversity, real conditions of routine analysis, variable selection, outlier detection and analytical validation. The model was built from 28.5-55.5% w/w, with a root-mean-square-error-of-prediction of 1.6%. After its adoption, the method stability was confirmed over a period of two years through the development of a control chart. Besides this specific method, the present study sought to provide an example multivariate metrological methodology with potential for application in several areas, including new aspects, such as more stringent evaluation of the linearity of multivariate methods.
Main Authors: | Botelho,Bruno G., Mendes,Bruna A. P., Sena,Marcelo M. |
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Format: | Digital revista |
Language: | Portuguese |
Published: |
Sociedade Brasileira de Química
2013
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Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422013000900023 |
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