Table 2.

Percentages of major compounds in the essential oils of reported Boswellia species.

Boswellia specie	Method of obtaining resin	Predominant compound(s)	Percentage (%)	Literature
B. serrata	Obatined from Willy Benecke GmbH (Hamburg, Germany)	Myrcene	38	[16]
B. serrata	NA	α-Thujene	22.7–47.4	[22]
B. serrata	NA	α-Thujene	29.3	[24]
B. serrata	NA	α-Thujene	61.36	[23]
B. carteri	Purchased from the local market of herbs and spices in Egypt	Duva-3,9,13-triene-1a-ol-5,8-oxide-1-acetate	21.4	[20]
B. sacra	Botanically certified oleogum resin	E-β-Ocimene	32.3	[25]
B. carteri/sacra	NM	Octanol acetate	45.2	[26]
B. carteri	Authentic sample from Ethiopia certified for its authenticity from the Agricultural Department of the Ethiopian government	Octyl acetate	39.3	[16]
B. rivae	NA	Limonene	28.0	[24]
B. rivae	Authentic sample from Ethiopia	α-Pinene	16.7	[16]
B. rivae	NA	α-Pinene	13.3	[24]
B. rivae	NA	Octanol	17.8	[24]
B. neglecta	NA	α-Pinene	16.7	[27]
B. neglecta	Authentic sample from Ethiopia	α-Pinene	21.3	[16]
B. papyrifera	NA	Octyl acetate	63.5	[24]
B. papyrifera	NA	Octyl acetate	56.0	[36]
B. pirottae	NA	Trans-Verbenol	15.5	[27]
B. pirottae	NA	Terpinen-4-ol	14.6	[27]
B. frereana	Willy Benecke GmbH (Hamburg, Germany)	α-Pinene	38.0	[16]

NA: not available.