Preposition: of

• food: The adulteration of food is not of course a new problem.

• oil: Analysis Analysis of minor components of oils is of importance in confirming the authenticity and detection of adulteration of edible oils.

• foodstuff: This prohibited the addition to food of articles which might injure health ( ie the adulteration of foodstuffs ).

• medicine: Review At least six databases were searched up to December 2001 for studies that might report on the adulteration of Chinese herbal medicines.

• juice: These results showed that the improvement made by industry in 1991 to reduce adulteration of orange juice has been maintained.

• milk: The commonest adulterations of milk are not of a hurtful character.

Adjective modifier

• possible: Will the assay results provide any clues not only to possible sources but also to purity or the possible adulteration of the specimens?

Modifies a noun

• problem: But one company conducting the commercial DNA tests said the adulteration problem remains.

Noun used with modifier

• food: There is little doubt that between 1800 and 1850 food adulteration was practiced on a large scale.