ABSTRACT
From Part 1 of this textbook it is already clear that food contaminants originate from many sources, including human activities. This and other factors make it difficult to give an equivocal definition of the term food contaminant. For example, the substance involved may be either synthetic or natural. Also, its presence in the food may be accidental or deliberate. So, the definition varies from country to country and from book to book, but in any case, unlike food additives, food contaminants are unwanted in foodstuffs.
