Responses of American arborvitae (Thuja occidentalis), common yew (Taxus x media) and juniper (Juniperus communis) to enhanced UV-B irradiance were studied. Control plants were grown without UV treatment, but at identical PhaR and temperature regimes. Visual symptoms of the ultraviolet effect noted on Thuja shoots as brown/red discolouration were correlated with the accumulation of phenolic com...

Juniperus communis (Cuppraseae), a coniferous plant widely used as traditional medicine was evaluated for the antidiabetic and antihyperlipidemic activity on Streptozotocin(STZ)-nicotinamide induced diabetic rats. The methanolic extract of Juniperus communis (MEJC) (100mg/kg, 200mg/kg, b.w) was administered orally in diabetic group except the standard group (Glibenclamide 10mg/kg, b.w) and the ...

The essential oils of branchlets and fruits of Juniperus excelsa subsp. excelsa and Juniperus excelsa subsp. polycarpos were examined for their antioxidant activity. The compositions of the essential oils were studied by GC and GC-MS. To evaluation the antioxidants activity of the volatile oils, pure components and positive controls at different concentrations, thin-layer chromatography (TLC) s...

The impact of the size and shape of a selected group of herbs (dried juniper berries – Juniperus communis, dry blueberries – Vaccinium myrtillus, petals of cornflower – Centaurea cyanus) on the value of the volatility coefficient, the coefficient of sphericity and the critical speed was analysed in the presented research. A laboratory anemometer to measure the speed of air was used. The determi...

Umbelliferone, 13 lignans and an unusual compound 2-(3,4-methylenedioxyphenyl)propane-1,3-diol, were isolated from the leaves of Juniperus chinensis. The lignans include meso-secoisolariciresinol, 3,4-methylenedioxy-3’,4’dimethoxylignan-9’,9-olide, hibalactone, isohibalactone, 7-oxohinokinin, 7-hydroxyhinokinin, 7-acetyloxyhinokinin, (+ )-xanthoxylol, dihydrodehydrodiconiferyl alcohol, 3-methox...

Our conclusion that a Juniperus virginiana stand in the central Appalachian Mountains is recovering from decades of acid deposition was based on tree ring carbon isotope ratios (δC) that show: (i) close correspondence between the timing of changes in direction of δC with declines in SO2 emissions occurring after the Clean Air Act; (ii) close similarities between patterns of δC after 1980 and du...