Open Access

Table 1

The “chemistry of indexes” parameters and related meaning.

Index Nowadays
Refractive index Unsaturation degree still used
Halphen reaction sterculic acid (Malvaceae oils) No more used, GC of FAMEs and sterols
Villavecchia-Fabris and Isodoro Pavolini reactions (In Italy, for Sesame oil) No more used, GC of FAMEs and sterols
Saponification Index Amount of fatty acids, no more used
Esters index Amount of TAGs, no more used
Iodine number Unsaturation degree still used
Thermosulphuric index Unsaturation degree no more used
Acidity index Quality, still used
Peroxide value Quality, still used

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