The gum resin exuded from the trunk of the olive plant frankincense (Boswellia Carterii Birdw. And other frankincense species) was obtained by steam distillation. It is colorless to pale yellow. It has a light lemon fragrance with a sweet paste fragrance. The relative density is 0.862-0.889. The refractive index is 1.465-1.482. The optical rotation is - 15 ~ + 35 (25 ℃), and the acid value is ≤ 4.0. The main components are dipentene, limonene, l-camphor esters, p-isopropyltoluene, Verbenone, verbenol, etc. Mainly produced in Somalia, Ethiopia and southern Arabian Peninsula. It is mainly used for fumigation materials and medicine, used for the preparation of daily flavors, and also for food flavors.<br>
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