Table 1 Chemical analysis results performed by IOC laboratories on eight olive oils purchased in Italy
From: Panel test and chemical analyses of commercial olive oils: a comparative study
Free acidity (% oleic acid) | Peroxide index (meq O2/kg) | K 232 | K 270 | ΔK | FAEE (mg/kg) | Stigmadienes (mg/kg) | |
|---|---|---|---|---|---|---|---|
Oi 1 | |||||||
Greece | /* | / | / | / | / | / | / |
Slovenia | 0.26 ± 0.031 | 9.8 ± 1.82 | 1.80 ± 0.043 | 0.147 ± 0.0094 | −0.002 ± 0.0015 | 30.2 ± 4.26 | 0.0491 ± 0.0280 |
Spain 1 | / | / | / | / | / | / | / |
Abruzzo (IT) | 0.23 ± 0.02 | 11.1 ± 0.1 | 1.79 ± 0.04 | 0.151 ± 0.040 | −0.001 ± 0.001 | 29 ± 1 | 0.04 ± 0.01 |
Lazio (IT) | / | / | / | / | / | / | / |
Liguria (IT) | 0.2 ± 0.1 | 9 ± 2 | 1.88 ± 0.16 | 0.20 ± 0.06 | 0.00 ± 0.01 | 32 ± 8 | 0.06 ± 0.01 |
Sicily (IT) | 0.24 ± 0.05 | 11 ± 3 | 1.77 ± 0.05 | 0.14 ± 0.02 | 0.002 ± 0.006 | 28 ± 8 | 0.04 ± 0.02 |
Veneto (IT) | 0.28 ± 0.06 | 10.0 ± 2.3 | 2.12 ± 0.39 | 0.16 ± 0.04 | 0.002 ± 0.002 | 28 | 0.04 |
Oi 2 | |||||||
Greece | / | / | / | / | / | / | / |
Slovenia | 0.35 ± 0.30 | 12.8 ± 2.3 | 2.07 ± 0.04 | 0.176 ± 0.009 | 0.001 ± 0.001 | 36.8 ± 5.1 | 0.0376 ± 0.0088 |
Spain 1 | / | / | / | / | / | / | / |
Abruzzo (IT) | 0.34 ± 0.02 | 13.5 ± 0.1 | 1.891 ± 0.004 | 0.160 ± 0.004 | 0.0040 ± 0.0001 | 37 ± 1 | 0.03 ± 0.01 |
Lazio (IT) | / | / | / | / | / | / | / |
Liguria (IT) | 0.3 ± 0.1 | 13 ± 2 | 1.96 ± 0.17 | 0.19 ± 0.06 | 0.00 ± 0.01 | 38 ± 10 | 0.03 ± 0.01 |
Sicily (IT) | 0.36 ± 0.05 | 13 ± 3 | 1.95 ± 0.05 | 0.21 ± 0.02 | 0.0000 ± 0.0006 | 30 ± 9 | 0.05 ± 0.02 |
Veneto (IT) | 0.35 ± 0.06 | 13.0 ± 2.3 | 2.04 ± 0.39 | 0.17 ± 0.04 | 0.001 ± 0.002 | 33 | 0.02 |
Oi 3 | |||||||
Greece | / | / | / | / | / | / | / |
Slovenia | 0.24 ± 0.03 | 7.3 ± 1.3 | 1.78 ± 0.04 | 0.201 ± 0.009 | 0.004 ± 0.001 | 24.6 ± 3.4 | 0.0238 ± 0.0068 |
Spain 1 | / | / | / | / | / | / | / |
Abruzzo (IT) | 0.23 ± 0.02 | 9.4 ± 0.1 | 1.615 ± 0.004 | 0.168 ± 0.004 | 0.0090 ± 0.0001 | 25 ± 1 | 0.01 ± 0.01 |
Lazio (IT) | / | / | / | / | / | / | / |
Liguria (IT) | 0.2 ± 0.1 | 8 ± 2 | 1.74 ± 0.15 | 0.20 ± 0.06 | 0.00 ± 0.01 | 27 ± 7 | 0.01 ± 0.01 |
Sicily (IT) | 0.23 ± 0.05 | 8 ± 3 | 1.60 ± 0.05 | 0.17 ± 0.02 | 0.004 ± 0.006 | 20 ± 6 | 0.05 ± 0.02 |
Veneto (IT) | 0.24 ± 0.06 | 8.0 ± 2.3 | 1.82 ± 0.39 | 0.18 ± 0.04 | 0.004 ± 0.002 | 23.7 | 0.03 |
Oi 4 | |||||||
Greece | / | / | / | / | / | / | / |
Slovenia | 0.28 ± 0.03 | 6.2 ± 1.1 | 1.79 ± 0.04 | 0.122 ± 0.009 | 0.000 ± 0.001 | 35.1 ± 4.9 | < 0.01 |
Spain 1 | / | / | / | / | / | / | / |
Abruzzo (IT) | 0.28 ± 0.02 | 7.9 ± 0.1 | 1.760 ± 0.004 | 0.117 ± 0.004 | 0.000 ± 0.001 | 35 ± 1 | 0.03 ± 0.01 |
Lazio (IT) | / | / | / | / | / | / | / |
Liguria (IT) | 0.3 ± 0.1 | 8 ± 2 | 1.84 ± 0.16 | 0.13 ± 0.04 | 0.00 ± 0.01 | 40 ± 12 | 0.01 ± 0.01 |
Sicily (IT) | 0.27 ± 0.05 | 8 ± 3 | 1.78 ± 0.05 | 0.12 ± 0.02 | 0.004 ± 0.006 | 33 ± 9 | 0.05 ± 0.02 |
Veneto (IT) | 0.26 ± 0.06 | 7.0 ± 2.3 | 1.98 ± 0.39 | 0.13 ± 0.04 | 0.001 ± 0.002 | 39.7 | 0.02 |
Oi 5 | |||||||
Greece | / | / | / | / | / | / | / |
Slovenia | 0.39 ± 0.03 | 8.2 ± 1.5 | 1.86 ± 0.04 | 0.140 ± 0.009 | −0.002 ± 0.001 | 35.5 ± 5.0 | 0.0136 ± 0.0025 |
Spain 1 | / | / | / | / | / | / | / |
Abruzzo (IT) | 0.36 ± 0.02 | 9.1 ± 0.1 | 1.812 ± 0.004 | 0.138 ± 0.004 | −0.001 ± 0.001 | 36 ± 1 | 0.02 ± 0.01 |
Lazio (IT) | / | / | / | / | / | / | / |
Liguria (IT) | 0.4 ± 0.1 | 8 ± 2 | 1.96 ± 0.17 | 0.16 ± 0.05 | 0.00 ± 0.01 | 39 ± 10 | 0.01 ± 0.01 |
Sicily (IT) | 0.36 ± 0.05 | 9 ± 3 | 1.69 ± 0.05 | 0.12 ± 0.02 | 0.001 ± 0.006 | 36 ± 10 | 0.04 ± 0.02 |
Veneto (IT) | 0.38 ± 0.06 | 8.0 ± 2.3 | 1.96 ± 0.39 | 0.16 ± 0.04 | 0.002 ± 0.002 | 35 | 0.04 |
Oi 6 | |||||||
Greece | / | / | / | / | / | / | / |
Slovenia | 0.19 ± 0.03 | 8.9 ± 1.6 | 2.21 ± 0.04 | 0.149 ± 0.009 | −0.001 ± 0.001 | 11.7 ± 1.6 | 0.0129 ± 0.0023 |
Spain 1 | / | / | / | / | / | / | / |
Abruzzo (IT) | 0.16 ± 0.02 | 10.2 ± 0.1 | 2.089 ± 0.004 | 0.136 ± 0.004 | −0.001 ± 0.001 | 14 ± 1 | 0.02 ± 0.01 |
Lazio (IT) | / | / | / | / | / | / | / |
Liguria (IT) | 0.2 ± 0.1 | 9 ± 2 | 2.16 ± 0.19 | 0.17 ± 0.06 | 0.00 ± 0.01 | 10 ± 3 | < 0.01 ± 0.01 |
Sicily (IT) | 0.16 ± 0.05 | 11 ± 3 | 2.12 ± 0.05 | 0.16 ± 0.02 | 0.000 ± 0.006 | 10 ± 4 | 0.03 ± 0.02 |
Veneto (IT) | 0.18 ± 0.06 | 9.0 ± 2.3 | 2.26 ± 0.39 | 0.16 ± 0.04 | 0.002 ± 0.002 | 11 | 0.02 |
Oi 7 | |||||||
Greece | / | / | / | / | / | / | / |
Slovenia | 0.23 ± 0.03 | 7.9 ± 1.4 | 1.86 ± 0.04 | 0.126 ± 0.009 | −0.003 ± 0.001 | 24.4 ± 3.4 | 0.0176 ± 0.0032 |
Spain 1 | / | / | / | / | / | / | / |
Abruzzo (IT) | 0.23 ± 0.02 | 9.7 ± 1.0 | 1.807 ± 0.004 | 0.126 ± 0.004 | −0.003 ± 0.001 | 30 ± 1 | 0.02 ± 0.01 |
Lazio (IT) | / | / | / | / | / | / | / |
Liguria (IT) | 0.2 ± 0.1 | 8 ± 2 | 1.87 ± 0.16 | 0.15 ± 0.05 | 0.00 ± 0.01 | 32 ± 8 | 0.01 ± 0.01 |
Sicily (IT) | 0.22 ± 0.05 | 8 ± 3 | 1.87 ± 0.05 | 0.15 ± 0.02 | 0.003 ± 0.006 | 20 ± 6 | 0.02 ± 0.02 |
Veneto (IT) | 0.25 ± 0.06 | 9.0 ± 2.3 | 1.99 ± 0.39 | 0.14 ± 0.04 | 0.004 ± 0.002 | 22 | 0.04 |
Oi 8 | |||||||
Greece | / | / | / | / | / | / | / |
Slovenia | 0.31 ± 0.03 | 11.6 ± 2.1 | 2.38 ± 0.04 | 0.152 ± 0.009 | −0.002 ± 0.001 | 29.0 ± 4.1 | 0.0161 ± 0.0300 |
Spain 1 | / | / | / | / | / | / | / |
Abruzzo (IT) | 0.32 ± 0.01 | 13.1 ± 0.1 | 2.049 ± 0.004 | 0.143 ± 0.004 | −0.002 ± 0.001 | 33 ± 1 | 0.03 ± 0.01 |
Lazio (IT) | / | / | / | / | / | / | / |
Liguria (IT) | 0.3 ± 0.1 | 11 ± 2 | 2.57 ± 0.22 | 0.18 ± 0.06 | 0.00 ± 0.01 | 31 ± 8 | 0.01 ± 0.01 |
Sicily (IT) | 0.32 ± 0.05 | 13 ± 3 | 2.35 ± 0.05 | 0.15 ± 0.02 | 0.002 ± 0.006 | 25 ± 7 | 0.04 ± 0.02 |
Veneto (IT) | 0.33 ± 0.06 | 13.0 ± 2.3 | 2.49 ± 0.39 | 0.16 ± 0.04 | 0.003 ± 0.002 | 27 | 0.04 |