“…This fact is not unexpected due to the difficulty to capture the smoke of frankincense and convert it into an extractable form. Pailer et al [2][3][4] detected some volatiles of B. carterii using GC-MS. Basar [5] studied in her Ph.D thesis the pyrolysis of four frankincense species included B. carterii, B. frereana Birdw, B. serrata, B. rivae, and B. neglecta using hot charcoal. We decided not to adopt this method due to possible confusing hallucinogenic or carcinogenic products, in particular polyaromatic hydrocarbons (PAHs) in charcoal.…”