Efficient Discrimination of Some Moss Species by Fourier Transform Infrared Spectroscopy and Chemometrics

Fourier-transform infrared (FT-IR) spectroscopy with the attenuated total reflectance (ATR) technique was used to classify 14 samples (11 species) from three moss families (Mielichhoferiaceae, Bryaceae, and Mniaceae). The FT-IR spectra ranging 4000 cm−1 650 of were obtained. To group according their spectral similarity in a dendrogram, cluster analysis principal component (PCA) performed. Cluster combined PCA give rough result classification among samples. However, some species belonging same genus exhibited very similar chemical components spectra. Discrete wavelet transform (DWT) enhance differences Three scales selected as feature-extracting space DWT domain. Results showed that chemometrics suitable for systematic research bryophytes.