The Scientific World Journal / 2014 / Article / Tab 3

Research Article

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

Table 3

Free and microencapsulated thymol and carvacrol antimicrobial activity against Micrococcus  luteus determined by the broth dilution method. After 2 hrs incubation at 30°C.

Antimicrobial compound Concentration (µg/mL)Form
Free (log CFU/mL)Microencapsulated (log CFU/mL)

Thymol05.51Aa  ± 0.125.52Aa  ± 0.03
504.17Bb  ± 0.115.44Aa  ± 0.11
1503.67Ca  ± 0.181.70Bb  ± 0
2503.58Ca  ± 0.121.70Bb  ± 0

Carvacrol05.51Aa  ± 0.125.52Aa  ± 0.03
805.49Aa  ± 0.084.46Bb  ± 0.15
1005.33Aa  ± 0.301.70Cb  ± 0
3005.22Aa  ± 0.241.70Cb  ± 0
5003.34Ba  ± 0.241.70Cb  ± 0

Different capital superscript letters indicate significant difference within a column, whereas different lowercase superscript letters indicate significant difference within rows.