The second
main axis is associated to an overall variance of approximately
3%. Therefore, the variations along this axis may be considered
negligible. The LDA analysis, in this case, allows the aroma of
the fresh and processed samples, which take up separate zone
of the plot, to be discriminated. Moreover, the set of data corresponding
to the different pressure levels show the same value on
the first main axis, while differ on the value of the second main
axis