The Scientific World Journal / 2014 / Article / Tab 5

Research Article

Microencapsulation, Chemical Characterization, and Antimicrobial Activity of Mexican (Lippia graveolens H.B.K.) and European (Origanum vulgare L.) Oregano Essential Oils

Table 5

Inhibition zone diameters obtained with Lippia  graveolens H.B.K. and Origanum  vulgare L. essential oils at 15% and 25% (w/v) concentration against test organisms.

MicroorganismConcentration of essential oil (%)MXO
essential oil
(mm)
Microencapsulated
MXO
essential oil
(mm)
EUO
essential oil
(mm)
Microencapsulated
EUO
essential oil
(mm)

Salmonella sp.1526.35aB  ± 0.840cB24.96bB  ± 0.060cA
2529.23aA  ± 0.1824.85cA  ± 0.2627.88bA  ± 0.160dA
Brochothrix thermosphacta 150bA24.43aA  ± 0.210bB0bB
250bA24.82aA  ± 0.1424.96aA  ± 0.0224.58aA  ± 0.33
Pseudomonas fragi 1524.95aA  ± 0.0124.82bA  ± 0.100cB0cB
2524.92aB  ± 0.0124.91aA  ± 0.3524.93aA  ± 0.0324.67aA  ± 0.25
Lactobacillus plantarum 1524.87aB  ± 0.0224.93aA  ± 0.210bA0bA
2524.94aA  ± 0.0125.02aA  ± 0.230bA0bA
Micrococcus luteus 1567.69aB  ± 0.1932.27bB  ± 0.4827.12cB  ± 1.2824.93dB  ± 0.18
2583.08aA  ± 0.0943.58cA  ± 0.0875.19bA  ± 0.1028.33dA  ± 0.81

a–d: for each test microorganism, means within a row not having a common superscript letter are different .
A and B: for each test microorganism, means within a column (between concentrations) not having a common superscript letter are different .