| compositional variation of the essential oils of artemisia afra jacq. from three provinces in south africa--a case study of its safety. | safety of artemisia afar has been a controversial issue due to its high thujone content. despite the declaration of the world health organization in the 1970s of the plant being unsafe for consumption, it is still commonly used in folklore medication in south africa, especially in winter. essential oils were isolated by hydrodistillation from the twigs of a. afra plants from different locations in the eastern cape, free state and kwazulu-natal. analyses of the oils by gc and gcms revealed compos ... | 2009 | 19634335 |