Forty strains of bacteria and 60 of fungi were screened with globulol,
1,8-cineol and cedrol and the strains compared, on the basis of the r
esulting products, using multivariate analyses. The taxonomic position
of the strains is mirrored in their biotransformation capability. Fun
gi and bacteria, fungal phyla, and Gram-positive and -negative bacteri
a could all be distinguished in a discriminant analysis using 12 subst
rates. Hierarchical clustering yielded five groups of strains with dis
tinct biotransformation activity. Such clustering will allow a more ef
ficient screening than before.