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Seven species of juniper grow in Azerbaijan. The examination of leaves and fruits of Juniperus oxycedrus L. growing in Azerbaijan was conducted. It was found that Juniperus oxycedrus L is widespread in Azerbaijan. The biologically active substances of Juniperus oxycedrus leaves have been studied. It was found that the main biologically active substances in leaves are flavonoids -1,61% and lipids -57,8%; in fruits - ethereal oil 1,2%. The flavonoid composites include luteolin, kaempferol, quercetine, izoquercitrin, rutin. They also possess the diuretic and anti-inflammation effects. Ethereal oil of fruits consist of 20 components, prevailing are alpha-beta-pinen, alpha-fellandren, alpha-terpineol and it also possesses high antimicrobial and antibacterial effect. Lipoid fraction includes tokoferols, karotinoids, xlorofils and lipoid acids: linol, linolen, olein, stearin and palmithin. There are also macroelements K,Ca, Mg,Na,and mikroelements Si, Fe, Al. It was found that the period of maximum accumulation of flavonoids in leaves and ethereal oil in fruit is in Autumn in the period of fruit maturation and ripening. Juniperus oxycedrus L is a good material for new antiseptic remedy. Flavonoids from the leaves of Juniperus oxycedrus L have anti-inflammatory and diuretic effect; fungicide, antimicrobial and antibacterial characteristics.

A new chromatographic procedure is proposed for rapid (35 min) complete fractionation of flavonoids in plant raw material; the method well discriminates between components with antioxidant activity (rutin, apigenin, quercetin, hesperidin). The method is based on reverse-phase high performance liquid chromatography using ODS-S5CN carrier and linear 10-60% pyridine elution gradient.