Populin is a glucoside occurring in the bark, buds and leaves of certain species of poplar.

Capsanthin, the red xanthophyll pigment, is used as a food additive approved by the European Union (EU) under the name as E160c. The common names for E160c are paprika extract, capsanthin or capsorubin. Capsanthin shows potent anti-adipogenic, lipolytic and fatty acid burning activities due to its potent adrenoceptor-beta2-agonistic activity. It was revealed, that capsanthin was not a thermogenic substance that is why it may be a good candidate for the development of new bioactive agent effective as a new anti-obese or insulin sensitivity enhancing substance.