Table 1.

Major Compounds of GE Analyzed by Gas Chromatography-Mass Spectrometry

Peak	Retention time (min)	Abundance (%)	Compound	Activity	Reference
1	9.676	0.56	Alpha pinene	Synergistic antitumor effect with paclitaxel	(Zhang et al., 2015)
2	11.365	0.33	Beta pinene	Synergistic antitumor effect with paclitaxel	(Zhang et al., 2015)
3	13.32	0.45	Limonene	Cytotoxic	(Oliveira et al., 2015)
4	13.427	3.18	1,8 cineole	Cytotoxic	(Sampath et al., 2017)
11	25.231	1.67	Methyl eugenol	Cytotoxic	(Yin et al., 2018)
13	25.841	7.27	Beta caryophyllene	Cytotoxic	(Legault and Pichette, 2007)
19	27.503	6.83	Germacrene	Cytotoxic potential against HL-60 cells	(da Silva et al., 2013)
23	28.149	13.95	Beta-bisabolene	Cytotoxic	(Yeo et al., 2016)
24	28.321	0.84	Eugenol	Induce apoptotic	(Al-Sharif et al., 2013)
26	28.598	17.25	Beta-sesquiphellandrene	Cytotoxic	(Tyagi et al., 2015)
29	30.155	0.37	Caryophyllene oxide	Cytotoxic	(Pan et al., 2016)