Abstract

RUIZ QUIROZ, Julio Reynaldo  and  SALAZAR SALVATIERRA, María Elena. Chemistry composition and antibacterial activity of the essential oils of Citrus paradisi, Juglans neotropica Diels, Schinus molle y Tagetes elliptica Smith. Rev. Soc. Quím. Perú [online]. 2021, vol.87, n.3, pp.228-241. ISSN 1810-634X.  http://dx.doi.org/10.37761/rsqp.v87i3.350.

The chemical composition and the antibacterial effect of the essential oils of Citrus paradisi, Juglans neotropica Diels, Schinus molle L. and Tagetes elliptica Smith) were determinided for gas chromatography/Mass spectrometry (GC/MS) and plate microdilution respectively were studied. In Citrus paradisi, 21 components were found, the main ones being D-Limonene (83,45%), octanal (8,68%) and β-myrcene (2,48%); in Juglans neotropica Diels 36 components were found, the main ones being α-pinene (39,88%), caryophylene (27,66%) and β-pinene (11,00%); 37 components were found in Schinus molle, the main α-phelandrene (19,59%), camphene (19,10%) and α-pinene (16,56%); and in Tagetes elliptica Smith found 33 components, with the majority being β-mircene (63,49%), cis-lanalool oxide (10,07%) and 2-tujene (7,77%). The minimum inhibitory concentration (MIC) for the essential oils of Citrus paradisi, Juglans neotropica Diels, Schinus molle L. and Tagetes elliptica Smith were less than 2.5 µL/mL for Staphylococcus aureus, and for Staphylococcus epidermidis were less than 5 µL/mL, with the exception of Juglans neotropica Diels which was > 40 µL/mL; and all the oils were inactive against Pseudomonas aeruginosa. The results found corroborate the great antibacterial potential of the essential oils studied.

Keywords : antibacterial; Citrus paradisi; Juglans neotropica; Schinus molle; Tagetes elleptica; essential oil.

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