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5.2 Quality indices
5.2.1 The quality indices of olive oil in Table 10
Table 10 the quality indices of olive oil
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Items |
Quality indices |
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|
|
Extra virgin olive oil |
Medium-grade virgin olive oil |
Lampante virgin olive oil |
Refined olive oil |
Blended olive oil |
|
Odour and taste |
Sensory judgment |
With fixed odour and taste of olive oil, no peculiar odour |
–– |
no peculiar odour |
no peculiar odour |
|
Median of defecta (Me) |
0 |
0 < Me ≤ 2.5 |
Me > 2.5 |
–– |
–– |
|
Median of fruit taste characteristicb (Me) |
Me > 0 |
Me > 0 |
–– |
–– |
–– |
|
Colour |
–– |
Light yellow to beige |
Light yellow / light green |
|
Transparency (20oC, 24h) |
Transparent |
–– |
Transparent |
|
Acid value (KOH) / (mg/g) |
≤ 1.6 |
≤ 4.0 |
> 4.0 |
≤ 0.6 |
≤ 2.0 |
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Peroxide value / (mmol/kg) ≤ |
10 |
10 |
–– |
2.5 |
7.5 |
|
Residual solvent content in oil / (mg/kg) |
–– |
Cannot be detected |
|
Ultraviolet absorbency (K1%1 cm) |
270 nm ≤ |
0.22 |
0.25 |
–– |
1.10 |
0.90 |
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Δ K ≤ |
0.01 |
0.01 |
–– |
0.16 |
0.15 |
|
232 nmd ≤ |
2.5 |
2.6 |
–– |
–– |
–– |
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Moisture & volatile matter / (%) ≤ |
0.2 |
0.3 |
0.1 |
0.1 |
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Insoluble impurities/ (%)≤ |
0.1 |
0.2 |
0.05 |
0.05 |
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Metal content / (mg/kg) |
Iron ≤ |
3.0 |
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Copper ≤ |
0.1 |
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Note: 1. The blank marked with “––” indicates that no test has been carried out. When, after testing, the residual solvent content in oil is less than 10mg/kg, it is regarded as unable to be detected. 2. The indices in bold font are mandatory.
a Index for evaluation of taste defect in olive oil preset by International Olive Oil Council.
b Index for evaluation of taste characteristic in olive oil preset by International Olive Oil Council.
c when g/ 100g, 5.0 mmol/kg = 5.0/39.4≈0.13g/100g.
d This test only serves as the dosage restriction implemented by commercial partners on voluntary foundation.
More information about Chinese Standard of the Olive oils, please click:. 01, 02, 03, 04, 05, 06, 07, 08, 09
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