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Chemometrics in food research: Relationships between triglyceride groups and fatty acid composition in olive oil
Author(s) -
Damiani P.,
Burini G.,
Daddi P.
Publication year - 1983
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02679782
Subject(s) - triglyceride , degree of unsaturation , olive oil , composition (language) , food science , chemistry , chemometrics , carbon number , fatty acid , regression analysis , linear regression , mathematics , chromatography , statistics , organic chemistry , biochemistry , cholesterol , linguistics , philosophy , alkyl
Abstract The values (mol %) of the triglyceride G nu groups, each containing all the molecular species with the same carbon numer and unsaturation, are different for various oils; in this paper, their use for analytical purposes is therefore hypothesized. To this end, the values (mol %) of G nu groups—with respective means, standard deviations and coefficients of variation‐were first of all established using the l, 3‐random‐2‐random distribution hypothesis on 50 olive oil samples; with these values, along with the relative data of the fatty acid composition, a computer study was carried out to obtain some regression models of use for estimating the G nu values (mol %) of other olive oil samples. The evaluation of the regression models procedure (RMP) was carried out comparing the values obtained by such a method for 6 other commercial olive oils with those experimentally determined by Ag + ‐TLC coupled with direct triglyceride GLC analysis. Moreover, these models were tested with the data of fatty acid composition of 4 different seed oils, providing often negative G nu values, always different, however, from those of olive oil.