Taste receptor
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A taste receptor or tastant is a type of cellular receptor which facilitates the sensation of taste. When food or other substances enter the mouth, molecules interact with saliva and are bound to taste receptors in the oral cavity and other locations. Molecules which give a sensation of taste are considered "sapid".
Taste receptors of the tongue are present in the taste buds of papillae.
Umami
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Umami, or savoriness, is one of the five basic tastes. It has been described as savory and is characteristic of broths and cooked meats.
Anchovies are rich in umami.
Image: Soy sauce with wasabi
Image: Ripe tomatoes