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RESEARCHES CONCERNING THE CHEMICAL COMPOSITION OF ESSENTIAL OIL FROM PELARGONIUM RADENS AND APPLICATIONS UPON MICROORGANISM CULTURES

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Author(s): ROXANA – IULIANA APETREI | MARIA – MAGDALENA ZAMFIRACHE | I. BURZO | D. MIHAIESCU | STEFANIA SURDU | IRINA TOMA

Journal: Scientific Annals of Alexandru Ioan Cuza University of Iasi. New Series, Section 2. Vegetal Biology
ISSN 1223-6578

Volume: 51;
Start page: 59;
Date: 2005;
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Keywords: plant anatomy | secretory structures | essential oil extraction | effects upon bacteria

ABSTRACT
Samples of Pelargonium radens H.E. Moore have been taken before the flowering period, for anatomical identification of the secretory structures and essential oil extraction and analysis. The essential oil of P. radens before the flowering period has been found in amount of approximately 0,33% from the fresh material weight. Essential oil was extracted by steam distillation using a modified Clevenger apparatus, whereas the chemical composition was analysed by GC – MS, and for P. radens it was found to have 64 components. The main components of P. radens essential oil are: citrinelol: 28,7%; mentone 27,3%; citronelil formate 8,4%, β-endesmol 4,81%, feniletil caproate 1,6%, geraniol 1,6%, isomentone 1,58%, as well as other components, in a concentration of less than 1,5%. The microorganisms tested were strains of Escherichia coli, G(-) and Staphylococcus aureus, G(+) using the antibiogramme method. Essential oil was tested in a concentration of 1000ppm and 500 ppm, solved in DMSO. The effect of DMSO was tested and was found null. At these concentrations, the essential oil of P. radens was found to have no effect upon E. coli and inhibitory effect upon S. aureus.
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