. 2018 Nov 1;6:e5476. doi: 10.7717/peerj.5476

Table 2. Determination of the percentage composition of the chemical composition of the Psidium salutare leaf essential oil by gas chromatography coupled to mass spectrometry (CG/MS) in different collection periods.

Compounds	tR* (min)	OEFPs1	OEFPs2	OEFPs3	% (media)
1,8 Cineole	5.5	0.61^a	0.51^a	1.05^a	0.72
Dimethyl benzylcarbinyl acetate	8.2	0.19^a	0.15^a	0.65^a	0.33
Copaene	11.2	3.22^a	3.53^a	1.91^a	2.89
Cubenol	14.8	0.63^a	0.0^a	3.42^a	1.35
Espatulenol	12.2	0.23^a	0.30^a	0.13^a	0.22
Sabinene hydrate	8.1	2.28^a	3.48^a	3.94^a	3.23
Isocarofilene	11.9	3.78^a	3.75^a	1.20^a	2.91
Limonene	5.4	1.10^a	1.15^a	1.14^a	1.13
Linalool	6.6	5.55^a	4.72^a	7.26^a	5.84
Myrcene	4.7	0.65^a	0.42^a	0.08^b	0.38
Myrtenol	7.5	0.21^a	0.16^a	0.09^a	0.15
Ocimene	5.7	2.15^a	1.93^a	1.50^a	1.86
Palustrol	14.1	0.05^a	0.11^a	0.10^a	0.09
Patchoulane	14.7	0.25^a	0.19^a	3.08^a	1.17
P-Cymene	5.3	5.05^b	6.37^b	17.83^e	9.75
Selina-3,7 (11) -diene	13.6	0.37^a	0.28^a	0.0^a	0.22
Seychellene	13.9	0.20^a	0.17^a	0.40^a	0.26
Terpineol	8.3	1.67^a	0.90^a	0.12^a	0.90
Terpinolene	6.4	16.99^c	14.49^c	6.90^b	12.79
Valencene	13.3	0.23^a	0.09^a	0.30^a	0.21
Viridiflorene	16.4	0.12^a	0.0^a	0.35^a	0.16
Viridiflorol	14.7	0.53^a	0.95^a	2.07^a	1.18
α-phellandrene	5.0	0.15^a	0.08^a	0.05^a	0.09
α-caryophyllene	12.4	0.24^a	0.29^a	1.68^a	0.74
α-cubebene	15.0	0.90^a	2.05^a	0.0^a	0.98
α-farnesene	13.8	0.03^a	0.03^a	0.24^a	0.10
α-gurjunene	11.7	0.21^a	0.10^a	0.08^a	0.13
α-muurolene	12.6	0.63^a	0.72^a	0.69^a	0.68
α-pinene	5.1	0.83^a	0.55^a	0.62^a	0.67
β-cadinene	5.9	0.96^a	1.45^a	0.83^a	1.08
β-elemene	13.7	0.16^a	0.12^a	0.70^a	0.33
β-eudesmene	12.8	0.15^a	0.11^a	0.0^a	0.09
β-guaienum	15.5	2.79^a	3.12^a	0.0^a	1.97
γ-gurjunene	13.6	0.10^a	0.21^a	0.26^a	0.19
γ-muurolene	13.2	2.58^a	2.42^a	3.20^a	2.73
γ-terpinene	5.9	13.97^d	17.09^d	10.32^c	13.79
δ-cadinene	13.3	5.27^a	3.88^a	3.84^a	4.33
δ-cadinol	15.3	1.68^a	0.0^a	0.92^a	0.87
δ-guaiene	14.9	0.28^a	0.28^a	3.70^b	1.42
τ-cadinol	15.2	12.75^d	10.51^d	10.35^d	11.20
Monotherpenes hydrocarbons		40.06	41.53	37.82	39.79
Sesquiterpenes hydrocarbons		21.65	22.15	18.98	20.94
Oxygenated monotherpenes		11.15	10.32	13.08	12.98
Oxygenated sesquiterpenes		15.87	11.87	16.99	14.91
Others		1.01	0.79	4.13	1.44
Total		89.74	86.66	91.00	90.6

Notes.

TR: retention time
OEFPs: essential oil from the leaves of Psidium salutare; first collection (February), second collection (May), third collection (August). Averages followed by different letters differ by Tukey test at p < 0.05