%0 Journal Article
%A MACFIE, HALLIDAY J. H.
%A GUTTERIDGE, COLIN S.
%A NORRIS, JOHN R.
%T Use of Canonical Variates Analysis in Differentiation of Bacteria by Pyrolysis Gas-Liquid Chromatography
%D 1978
%J Microbiology,
%V 104
%N 1
%P 67-74
%@ 1350-0872
%R https://doi.org/10.1099/00221287-104-1-67
%I Microbiology Society,
%X Low-resolution pyrolysis gas-liquid chromatography (p.g.l.c.) can differentiate genera of aerobic food spoilage bacteria. Multivariate statistical techniques were applied but neither principal components nor furthest neighbour cluster analysis produced a consistent differentiation although both confirmed the reproducibility of p.g.l.c. When the distance between genera was redefined in terms of Mahalanobis D
2 a generalized concept taking into account scatter around the mean - good differentiation was observed and could be displayed graphically by plotting the genus group means relative to the first two canonical variate axes. The coefficients of the canonical variates provide a strategy for discriminating between the genus groups. Some practical problems in the identification of unknowns using this technique are discussed.
%U https://www.microbiologyresearch.org/content/journal/micro/10.1099/00221287-104-1-67