Anthelmintic Activity of Crude Extract and Essential Oil of Tanacetum vulgare (Asteraceae) against Adult Worms of Schistosoma mansoni

Table 2

Composition of the essential oil of T. vulgare (TV-EO) identified by CG/MS analysis.

Compounds	RIexp^a	RI^blit	Content (%)^c	Identification^d
1,8-Cineol (1)	1036	1031	0.55	RI, MS
𝛼-Thujone (2)	927	930	1.64	RI, MS
𝛽-Thujone (3)	1117	1114	84.13	RI, MS
𝛼-Pinene (4)	935	939	1.04	RI, MS
𝑝-Cimene (5)	1025	1026	0.68	RI, MS
Terpinen-4-ol (6)	1167	1171	1.54	RI, MS
Germacrene-D (7)	1480	1480	6.81	RI, MS
Not identified	1499	—	1.12	RI, MS
Not identified	1965	—	1.68	RI, MS
Total			96.39
Monoterpenes: 89.58%
Sesquiterpenes: 6.81%

aRI_exp: retention index determined relative to 𝑛-alkanes (C₈–C₂₆) on the Rtx-5MS column. bRI_lit: retention index from [25]. cCalculated from the peak area relative to the total peak area. dCompound identification: RI, comparison of the RI with those of [25]; MS: comparison of the mass spectra with those of the Wiley 7, NIST 08, and FFNSC 1.2 spectral libraries as well as with those of [25].