Table 1.

Minor polar compounds (MPCs) present in the extra virgin olive oils (EVOOs).

Constituents (mg/L)	EVOO1	EVOO2	EVOO3	EVOO4	EVOO7	EVOO8
hydroxytyrosol	3.12 ± 0.95	0.51 ± 0.02	0.98 ± 0.03	6.88 ± 0.28	1.47 ± 0.04	1.88 ± 0.06
Tyrosol	1.02 ± 0.04	1.23 ± 0.05	0.21 ± 0.01	6.22 ± 0.19	1.86 ± 0.06	1.87 ± 0.07
Elenolic acid derivatives	9.31 ± 0.28	60.8 ± 1.8	12.5 ± 0.4	36.6 ± 1.5	21.2 ± 0.64	29.3 ± 0.9
Elenolic acid	150 ± 4	31.5 ± 1.3	111 ± 3	106 ± 4	117 ± 3	197 ± 6
10-hydroxy-oleocanthal	315 ± 12	362 ± 11	61.0 ± 1.8	168 ± 7	67.5 ± 2.0	124 ± 4
Oleocanthal	198 ± 6	192 ± 6	46.2 ± 1.4	79.4 ± 3.2	94.1 ± 2.8	44.0 ± 1.3
Secoiridoid derivatives	96.4 ± 2.9	17.1 ± 0.7	30.9 ± 0.9	47.3 ± 1.9	48.4 ± 1.4	36.4 ± 1.1
Lignans	208 ± 8	160 ± 5	107 ± 3	90.2 ± 3.6	62.1 ± 1.9	129 ± 4
Oleuropein aglicone	164 ± 5	67.7 ± 2	105 ± 3	108 ± 4	83.4 ± 2.5	143 ± 4
Total MPCs	1146 ± 34	893 ± 27	475 ± 14	649 ± 19	497 ± 14	707 ± 21
Acidity (% oleic acid)	0.17 ± 0.01	0.15 ± 0.01	0.24 ± 0.01	0.16 ± 0.01	0.16 ± 0.01	0.15 ± 0.01
Peroxides (mEq O2/kgoil)	4.98 ± 0.20	5.21 ± 0.21	5.01 ± 0.15	8.82 ± 0.26	8.81 ± 0.26	7.81 ± 0.23
Polyphenols (mgtyrosol/kgoil)	890 ± 36	791 ± 31	354 ± 10	423 ± 13	342 ± 10	443 ± 13