Table 2.

Major non-volatile compounds in Mentha species.

Chemical Constituents	Individual Compounds
Anthocyanidins	Cyanidin, delphinidin, luteolinidin, pelargonidin, petunidin
Coumarins	Esculetin and scopoletin
Flavanols	Catechin, epicatechin
Flavanones	Eriocitrin, eriodictyol, hesperidin, naringenin, narirutin
Flavones	Apigenin, diosmetin, diosmin, luteolin, luteolin-O-glucuronide, gardenin B, luteolin-O-glucoside, pebrellin, salvigenin, thymusin, thymonin
Flavonols and dihydroflavonols	Quercetin, kaempferol, rutin
Phenolic acids	Cinnamic acid, its analogs (hydroxybenzoic, p-coumaric, ferulic, caffeic, sinapic, rosmarinic, salvianolic, isosalvianolic, didehydrosalvianolic and lithospermic acids, nepetoidin A/B) and glycosides (caffeic acid glucuronide, chlorogenic, caftaric), gallic, syringic and vanillic acids
Phenylethanoids	Tyrosol
Stilbenoids	Resveratrol
Terpenes	Oleanolic acid