Examining the multivariate relationship between the green
coffee bean varieties and the roasted derivatives using principle
component analysis, similar to the univariate data, the PCA chart
(Fig. 1) showed that all three varieties of green coffee beans were
characterized by green, musty/earthy sour aromatics, and beany,
attributes. Green and musty/earthy attributes were more prevalent
in green coffee beans as compared to the roasted forms. Beany and
sour aromatics were still substantially present even after the coffee
beans were roasted, ground, or brewed. Beany seemed to also
characterize the brewed coffee. It appeared that brewed coffee
samples were distinguished from the roasted and ground forms by
the higher intensity of beany attribute as well as the lack of
pungent, burnt/acrid, ashy/sooty, roasted, and coffee.