Metodologia para avaliação rápida e não invasiva de cápsulas de óleo utilizando espectrofotômetro ultracompacto para a região do infravermelho próximo
The main objective of this work is to propose a methodology for the rapid and non-invasive evaluation of oil capsules using near-infrared spectroscopy and chemometric methods. For the study, 25 samples of different oil capsules of different brands were acquired, subjected to near-infrared spectrosco...
| Autor principal: | Leme, Luiza Mariano |
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| Formato: | Dissertação |
| Idioma: | Português |
| Publicado em: |
Universidade Tecnológica Federal do Paraná
2019
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| Assuntos: | |
| Acesso em linha: |
http://repositorio.utfpr.edu.br/jspui/handle/1/3970 |
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| Resumo: |
The main objective of this work is to propose a methodology for the rapid and non-invasive evaluation of oil capsules using near-infrared spectroscopy and chemometric methods. For the study, 25 samples of different oil capsules of different brands were acquired, subjected to near-infrared spectroscopy and then evaluated by gas chromatography. The results were compared by Principal Component Analysis (PCA), taking as standard separation that obtained from the chromatographic data. The PCA model intact capsules presented assertive classification for 18 samples, while for the oils extracted from it, 20 samples were classified according to the pattern. From the results and considering the differences in the complexity of the information obtained, near-infrared spectroscopy can be used as a screening for the chromatographic analysis, showing as a promising methodology to increase the number of measures of these products and, consequently, its quality control. |
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