The pterocarpans bitucarpin A and B can be isolated from the aerial parts of B. bituminosa.
It is easily recognizable by the characteristic smell of bitumen from its leaves. This strong tar-like characteristic aroma appears to be the result of a combination of several substances such as phenolics, sulphurated compounds, sesquiterpenes and probably short-chain hydrocarbon. Total polyphenols content was < 2% and the condensed tannins was <0.8% in a dry weight basis.
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Photos Chaleuka 4/6/2015 by George Konstantinou
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