E. Stefanoudaki et al., THE POTENTIAL OF HPLC TRIGLYCERIDE PROFILES FOR THE CLASSIFICATION OFCRETAN OLIVE OILS, Food chemistry, 60(3), 1997, pp. 425-432
One hundred and twenty authentic olive oil samples of the two major Cr
etan olive cultivars, Koroneiki and Mastoidis, collected at different
maturity stages have been obtained from different producing areas and
analysed by isocratic high-performance liquid chromatography according
to the official EC method. Multivariate analysis, including principal
component analysis and canonical discrimination analysis, were used t
o characterize the oils according to cultivar, location and sampling d
ate. Using the triglyceride compositional data, the two varieties exam
ined were sufficiently separated by means of discriminant analysis pro
cedures. Within each variety the oils were grouped quite clearly accor
ding to their geographic origin. Samples that originated from neighbou
ring locations with no marked differences in geographic morphology, or
samples from locations with some extremes in the climatic conditions,
presented some discrepancies in classification. (C) 1997 Elsevier Sci
ence Ltd.