The Danish Consumer Organisation, Forbrugerrådet Tænk, collected 10 samples of oregano from supermarkets and stores around Copenhagen during the summer. The samples were sent for analysis by FTIR and chemometric modelling followed by mass spectrometry for confirmation. Three of the samples had only 50% oregano, and a fourth 70% oregano, the remainder was dried plant material from olive leaves and myrtle. 

Read the article at: Danish oregano tests

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