Reply to Comment on 'Identification of Edible Oils by Principal Component Analysis of 1H NMR Spectra

Additional student-acquired untargeted PCA data are presented, and potential variations on a NMR-based oil classification laboratory are discussed. While unambiguous sample identification is easily achieved without feature selection, the use of published peak lists is a viable alternate approach to variable reduction prior to PCA analysis. Individual instructors can evaluate whether an unbiased or a targeted approach best fits their pedagogical goals.