Table 2.

Phytochemical and phenolic compounds extracted from cinnamon bark.

Species	Type of extract	Compounds	Ref
Cinnamomum cassia	60% Ethanol extract	Cinnamic acid, sinapic acid, p-coumaric acid, vanillin, caffeic acid, protocatechuic acid, and 3-4-dihydroxybenzaldehyde	40
C cassia	Boiling water extract	Quercetin-3-rhamnoside, kaempferol, coumaric acid, syringic acid, and tannic acid	48
Cinnamomum zeylanicum and C cassia	60% Ethanol extract	Gallic acid, p-hydroxybenzoic acid, p-hydroxybenzaldehyde, protocatechuic acid,	49
		salicylic acid, syringic acid, vanillic acid vanillin, caffeic acid, chlorogenic acid, ferulic acid, p-coumaric acid, cinnamic acid, and sinapic acid
C cassia	Essential oil	Trans-cinnamaldehyde (73.56%) benzene, 1,3-dimethyl, styrene, benzaldehyde, camphene, linalool, cis-cinnamaldehyde	50
		acetophenone, camphor, borneol, benzenepropanal, decanal
		decane, 3-ethyl-3-methyl-, 2-propen-1-ol, 3-phenylacetate, trimethyl-eugenol
		copaene, geranyl acetate, caryophyllene, benzene, and cinnamyl acetate
Cinnamomum verum	Essential oil	Trans-cinnamaldehyde (74.49%) benzene, 1,3-dimethyl, styrene, benzaldehyde, camphene, linalool, and cis-cinnamaldehyde	50
		acetophenone, camphor, borneol, benzene propanal, decanal
		decane, 3-ethyl-3-methyl-, 2-propen-1-ol, 3-phenylacetate, trimethyl-eugenol
		copaene, geranyl acetate, caryophyllene, benzene, and cinnamyl acetate
Cinnamomum loureiroi	Essential oil	Trans-cinnamaldehyde (81.97%) benzene, 1,3-dimethyl, styrene, benzaldehyde, camphene, linalool, cis-cinnamaldehyde	50
		acetophenone, camphor, borneol, benzenepropanal, decanal
		decane, 3-ethyl-3-methyl-, 2-propen-1-ol, 3-phenylacetate, trimethyl-eugenol
		copaene, geranyl acetate, caryophyllene, benzene, and cinnamyl acetate