[Separation and calibration of some anthraquinones in the types of aloe which grow in Syria]

Aloe is one of the most important medicinal plants at the present time, which entered to Syria since a long time. Genus Aloe has about four hundred species. In this research species in Syria were classified, which their number is six. Aloin and Aloe-emodin were calibrate in the six species that are the most important Anthraquinones. It was noted that there is not Aloe-emodin in the six species, but there is Aloin only in five types