The Study and Comparison of Rosmarinic Acid in Leaf and Branch of Rangeland Species of Rosemari Plant in Two Regions: Kandelus of Kojur and Nowshahr Area

The belief in the medical properties of plants and herbs, which has gradually been acquired since the old times, has been important among several different societies. Rosemary is one of the medical herbs, the growth of which is common in many areas of Iran. In this study, samples of Rosemary were collected simultaneously at a specific hour during the daytime from two areas of Kandelus of Kojur and Nowshahr, and after the preparation and separation of the effective material of the plant in leaves and branches by ethanole and water solvent, the ratio of Hydroxycinamic was measured according to Rosmarinic acid by UV/Vis spectrophotometry in the wave length of 505 nm. The results of the study showed that the amount of Rosmarinic acid in Kandelus of Kojur is 1.5 times more than in Nowshahr. Meanwhile the amount of this material in the leaves is 3.5 times more than that of the branches. This significant difference is due to factors such as the type of soil, the amount of rain, the altitude, the light and the temperature.