title: Exploratory and discriminative studies of commercial processed Brazilian coffees with different degrees of roasting and decaffeinated
abstract: The fingerprints of the volatile compounds of 21 commercial Brazilian coffee samples submitted to different industrial processing i.e. decaffeinated or different roasting degrees (traditional and dark) were studied. The volatiles were collected by headspace solid phase microextraction (HS-SPME) and analyzed by GC-FID and GC-MS. The chromatographic data matrices (fingerprints) obtained were explored by the principal component analysis (PCA) and partial least squares - discriminative analysis (PLS
journal: Brazilian journal of food technology/Brazilian Journal of Food Technology