Antibacterial effect of essential oils in „natural perfumes"

Gomaz, Ana (2011) Antibacterial effect of essential oils in „natural perfumes". Diploma thesis, Faculty of Science > Department of Biology.

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Abstract

Essential oils are secondary plant metabolites and they are screened for new antibacterial substances. Natural perfumes can be prepared as ethanol extracts of essential oils or as mixtures with base oils. This thesis investigates the antibacterial effect of two natural perfumes, prepared as both ethanol and base oil mixtures with defined composition of essential oils, as well as antibacterial effect of utilized essential oils (patchouli, cedarwood, frankincense, geranium, ylang-ylang, lavender, sage, bay, bergamot and orange) on pure cultures of E. coli, P. aeruginosa, S. aureus and B. subtilis by agar disc diffusion method. Sage essential oil had the strongest effect, on three tested strains (S. aureus, P. aeruginosa and B. subtilis) even stronger than positive control, and essential oil of geranium, bergamot, ylang-ylang, bay and lavender showed good antibacterial activity as well. First ethanolic perfume showed moderate effect on P. aeruginosa, although the concentration of essential oils was only 30%. The hypothesis of synergistic action of essential oils is not conclusively confirmed, but neither denied.

Item Type: Thesis (Diploma thesis)
Keywords: bacteria, essential oil, natural perfume, disk diffusion
Supervisor: Hrenović, Jasna
Date: 2011
Number of Pages: 47
Subjects: NATURAL SCIENCES > Biology
Divisions: Faculty of Science > Department of Biology
Depositing User: Grozdana Sirotic
Date Deposited: 09 Jun 2014 08:23
Last Modified: 18 Sep 2014 08:46
URI: http://digre.pmf.unizg.hr/id/eprint/2295

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