Volatile Compounds and Smell Chemicals (Odor and Aroma) of Food

Abstract

Among the constituents of food, volatile compounds are a particularly intriguing group of molecules, because they give rise to odor and aroma. Indeed, olfaction is one of the main aspects influencing the appreciation or dislike of particular food items. Volatile compounds are perceived through the smell sensory organs of the nasal cavity, and evoke numerous associations and emotions, even before the food is tasted. Such a reaction occurs because the information from these receptors is directed to the hippocampus and amygdala, and the key regions of the brain involved in learning and memory. In addition to identifying the odor active compounds, the analysis of the volatile compounds in food is also applicable for detecting the ripening, senescence, and decay in fruit and vegetables, as well as monitoring and controlling the changes during food processing and storage (i.e., preservation, fermentation, cooking, and packaging).