Comparative Phytochemical Analyses of Resins of Boswellia Species (B. papyrifera (Del.) Hochst., B. neglecta S. Moore, and B. rivae Engl.) from Northwestern, Southern, and Southeastern Ethiopia

Table 2

Chemical compositions (%) of essential oils of three B.  neglecta resins.

Retention time (min)	Components	Dubuluk	Mega	Wachile*
		%	%	%
6.4	𝛼-Thujene	16.5	13.0	12.7
6.7	α-Pinene	42.0	32.6	50.7
7.8	𝛽-Pinene	1.1	1.4	1.5
8.8	Sabinene	0.7	2.9	1.4
9.4	p-Cymene	2.0	5.1	2.2
14.6	Terpinen-4-ol	28.2	29.9	17.5
15.0	Verbenone	3.6	2.5	6.6

∗Components identified from the essential oil of same sample reported in our previous study [13].