Food adulteration occurs when an ingredient is replaced partially or fully with something different - without the knowledge of the consumer. A new research published in the Journal of Food Science has identified the top seven foods with commonly altered ingredients as olive oil, milk, honey, saffron, orange juice, coffee, and apple juice. Olive oil made up 16 percent of the total records, and ranked as the most adulterated food. According to Journal of Food Science’ research, most of the food fraud cases (95%) were economically-motivated.