Challenges in discovering bioactives for the food industry.

Nutritional interventions are associated with transient deviations of homeostasis within the human body. The role of a balanced nutrition is, firstly, to ensure an adequate intake of nutrients to efficiently enable all metabolic processes and, secondly, to contribute to sustained human health. This is a new challenge for the food industry because consumers demand taste and convenience in addition to healthy food. The attempts of the food industry to omit health-adverse compounds, and incorporate constituents with identified beneficial health effects has coined the term 'functional food', encompassing fresh or processed food with health-promoting and/or disease-preventing properties. The active ingredients of these products are known as 'nutraceuticals'. This paper outlines scientific concepts applied to the identification of novel bioactive food ingredients.