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. 2016 Nov 1;210:551–557. doi: 10.1016/j.foodchem.2016.05.004

Table 2.

Results from the oregano survey.

Oregano Survey UK/Irelanda Internet/Otherb
Samples Tested 53 25
Samples Adulterated 13 6
Samples Adulterated % 24.5 24
Level of Adulterationc ∼30 to >70% ∼30 to >70%
Most Common Adulterants 1. Olive leaves 1. Olive leaves
2. Myrtle leaves 2. Myrtle leaves
a

Includes Retail and Service Sector.

b

Includes Amazon, Ebay and Purchases made abroad.

c

Based on scores from chemometric analysis.