Schwartz et al. Jasminum Absolute produced positive patch test reactions in some patients who were contact sensitive to cinnamic aldehyde. Between 40 and 50 species are found from Europe to northern Persia, in eastern Asia and from Indo Malaysia to New Guinea and Queensland. Olea Twenty species are widely distributed. Olea europaea is cultivated.
Several species yield good timber.
Olive oil comprises mainly triglycerides of which triolein forms a significant fraction. Essellier et al. The saturated triglyceride tripalmitin, in contrast, applied by rubbing into an area of scarified skin, failed to elicit a local reaction. Syringa 30 species are found from south-eastern Europe to eastern Asia. Ind. J. Derm.