More than 60 compounds were identified in the essential oils of 11 Eucalyptus species, namely E. leucoxylon F. Muell; E. punctata DC; E. sideroxylon Cunn; E. saligna Smith; E. cladocalyx F. Muell; E. blakelyi A.Cunn; E. ovata Labill; E. albens Miq.ex Benth; E. camaldulensis DC., and E. globulus Labill. The major compounds were 1,8-cineole, a-pinene, p-cymene, spathulenol, and benzaldehyde.

Interestingly, the major volatile organic compound, 1,8-cineole, was also the predominant one in the atmospheric emission of E. globulus Labill. This result could provide an important insight about the origin of 1150 TgC (Tg=1012g) of biogenic volatile organic compounds emitted each year into our atmosphere (Guenther et al., 1995) by terrestrial trees.


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Renewable Energy 101

Renewable Energy 101

Renewable energy is energy that is generated from sunlight, rain, tides, geothermal heat and wind. These sources are naturally and constantly replenished, which is why they are deemed as renewable. The usage of renewable energy sources is very important when considering the sustainability of the existing energy usage of the world. While there is currently an abundance of non-renewable energy sources, such as nuclear fuels, these energy sources are depleting. In addition to being a non-renewable supply, the non-renewable energy sources release emissions into the air, which has an adverse effect on the environment.

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