CHEMICAL CONSTITUENTS AND ECOTOXICOLOGICAL EFFECT OF THE VOLATILE OIL FROM LEAVES OF Eucalyptus urograndis (MIRTACEAE)

摘要

CHEMICAL CONSTITUENTS AND ECOTOXICOLOGICAL EFFECT OF THE VOLATILE OIL FROM LEAVES OF Eucalyptus urograndis (MIRTACEAE). The volatile oil from the leaves of E. urograndis was analyzed by GC and GC-MS. It was identified 10 compounds in which, orto-cimene (41.4%) and 1,8-cineol (25.8%) were the main constituents. The induction of deleterious effect to aquatic organisms due to the presence of volatile oil lixiviated from E. urograndis leaves was studied using Daphnia laevis and D. similis as bioindicators. Through the results of toxicological tests it was possible to show that the litterbag of E. urograndis represents a risk factor for the aquatic ecosystem of lakes and rivers that are in the surrounding area of large scale Eucalyptus plantations. The method can be used for monitor the quality of these types of aquatic environments.