Molecules of Interest for Flavors

Monosodium glutamate: flavor enhancer found in processed foods. Stimulates the umami taste, associated with broths and meats.

Caffeine: bitter-tasting compound found in coffee, tea, and chocolate. Also acts as a nervous system stimulant.

Capsaicin: responsible for the spiciness of peppers. Activates heat receptors, causing a burning sensation.

Citric acid: found in citrus fruits such as lemons and oranges. Gives a sour and refreshing taste.