Eucalyptus species are well reputed for their traditional use in Asia as well as in other parts of the world; therefore, the present study was designed to investigate the antimicrobial and antioxidant activities associated with essential oils from different Eucalyptus species. Essential oils from the leaves of six Eucalyptus species, including: Eucalyptus woodwardi, Eucalyptus stricklandii, Euc...

CAD (EC 1.1.1.195) catalyzes the reduction of cinnamyl aldehydes to produce p-coumaryl, coniferyl, and sinapyl alcohols, which constitute the precursors for lignin biosynthesis. Antisense inhibition of CAD activity in tobacco (Nicotiana tabacum) resulted in altered lignin composition, demonstrating that the enzyme is a useful target for manipulation of lignification (Halpin et al., 1994). CAD a...

Eucalyptus species are widely planted for reforestation in subtropical China. However, the effects of Eucalyptus plantations on the regional water use remain poorly understood. In an age sequence of 2-, 4- and 6-year-old Eucalyptus plantations, the tree water use and soil evaporation were examined by linking model estimations and field observations. Results showed that annual evapotranspiration...

For the purposes of forest restoration, carbon (C) fixation, and economic improvement, eucalyptus (Eucalyptus urophylla) has been widely planted in South China. The understory of eucalyptus plantations is often occupied by a dense community of the fern Dicranopteris dichotoma, which intercepts tree canopy leaf litter before it reaches the ground. To understand the effects of this interception o...

A central assumption of ecosystem N cycling has been that organic N must be converted to inorganic N to be available for plant uptake, but this has been questioned by recent studies. We examined uptake of nitrate, ammonium and the amino acid glycine in three species from Eucalyptus obliqua L'Her. wet forest in Tasmania, south-eastern Australia, to test the hypothesis that all three species can ...

In order to establish the marker constituents of the natural antioxidant food-additive Eucalyptus leaf extract, the UV-absorbing constituents of two eucalyptus leaf extracts registered as food additives (eucalyptus A and B) were investigated. Several major peaks on the reversed-phase HPLC chromatogram of eucalyptus A were characterized as gallic acid, ellagic acid, 3-O-beta-D-glucuronides of qu...

BACKGROUND The leaves of Eucalyptus globulus (eucalyptus) are used for treatment of diabetes mellitus in traditional medicine. The aim of this study was to evaluate the effects of eucalyptus in treatment of established systemic infection with Candida albicans in normal and streptozotocin-induced diabetic rats. METHODS Sixty normoglycemic male Wistar rats, weighing 200-250 g, were selected and...

The orange-yellow and colorless essential oils with respective yields of 1.54% 3.59% were extracted from the dry leaves Cymbopogoncitratus (DC.) Stapf Eucalyptus citriodora Hook. collected south Brazzaville. Analysis by gas chromatography (GC) coupled mass spectrometry (GC/MS) allowed identification fifteen (15) eight (8) constituents representing (96.25%) (98.46%) total respectively. oil consi...