The Investigation and Comparison of Total Hypericin of Hypericum preforatum L in Zanous in kojur and in Nowshahr Area.

The correct management of valuable hereditary storage of plants is impossible without the study of ecological and chemical features of flora of every region. Hypericum preforatum L is a herbal plant which has different natural sites in northern and western regions of Iran. In this study, samples of Hypericum preforatum L at the same time, were collected from Zanous in Kojur and Nowshahr in fullbloom and the total Hypericin was measured by UV/Vis Spectrophotometry in wavelength of 590 nm after preparation and separation effective materials of the plant by solvent THF and water. The results of the study show that the total rate of Hypericin in Nowshahr is 12.8 percent more than that of Zanous in Kojur. This significant difference is due to factors like precipitation, altitude, light and temperature.