DISCRIMINAÇÃO DE MADEIRAS SIMILARES POR FLUORESCÊNCIA MOLECULAR E MÍNIMOS QUADRADOS PARCIAIS

Wood is an extremely complex biological material, which can show macroscopic similarities that make it difficult to discriminate between species. Discrimination between similar wood species can be achieved by either anatomic or instrumental methods, such as near infrared spectroscopy (NIR). Although...

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Bibliographic Details
Published in:Química Nova 2015-11, Vol.38 (9), p.1176-1180
Main Authors: Oliveira, Elian Meneses, Braga, Jez Willian Batista, Costa, Alexandre Florian da
Format: Article
Language:eng ; por
Subjects:
CHEMISTRY, MULTIDISCIPLINARY
discrimination
fluorescence
PLS-DA
woods
Online Access:Get full text
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Summary:Wood is an extremely complex biological material, which can show macroscopic similarities that make it difficult to discriminate between species. Discrimination between similar wood species can be achieved by either anatomic or instrumental methods, such as near infrared spectroscopy (NIR). Although different spectroscopy methods are currently available, few studies have applied them to discriminate between wood species. In this study, we applied a partial least squares-discriminant analysis (PLS-DA) model to evaluate the viability of using direct fluorescence measurements for discriminating between Eucalyptus grandis, Eucalyptus urograndis, and Cedrela odorata. The results show that molecular fluorescence is an efficient technique for discriminating between these visually similar wood species. With respect to calibration and the validation samples, we observed no misclassifications or outliers.
ISSN:1678-7064
DOI:10.5935/0100-4042.20150127