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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
  1. /* Analysis was not performed
  2. The limits of the parameters of quality and genuineness of an EVOO are (1) ≤0.8, (2) ≤20, (3) ≤2.50, (4) ≤0.22, (5) ≤0.01, (6) ≤35 (for crop year 2014/2015)
  3. The limits of the parameters of a virgin olive oil are 2≤ (1) ≤0.8, (2) ≤20, (3) ≤2.60, (4) ≤0.25, (5) ≤0.01