Camellia oleifera is an important woody edible oil tree species in China. Also, it is one of the four major woody oil crops in the world. A large number of modern phytochemical studies have found that C. oleifera mainly contains triterpenoids, flavonoids, and tannins, and so on. Among them, pentacyclic triterpene saponins with oleanane-type are the main chemical components which possess many pharmacological activities, such as anti-tumor, cardiovascular system protection, hypoglycemic, hypolipidemic, bactericidal, nerve cell protection, and ant...