Teaghrelins

Teaghrelins are acylated flavonoid tetraglycosides found in semi-oxidized oolong teas (Camellia sinensis), such as Chin-shin oolong tea^[1] and Shy‐jih‐chuen oolong tea.^[2]

Chemical structure of teaghrelin-1

Teaghrelins are ghrelin receptor agonists in vitro.^[1] In an animal model, teaghrelins induce hunger and accelerate gastric emptying.^[1] Teaghrelins also has growth hormone releasing activity on the anterior pituitary gland, similar to the synthetic ghrelin analog GHRP-6, that could be inhibited by a ghrelin receptor antagonist.^[1]