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Table 3 Antibacterial activity of essential oils and components towards selected bacteria

From: In vitro antibacterial activity of thymol and carvacrol and their effects on broiler chickens challenged with Clostridium perfringens

Bacteria

MIC (μg/mL)

MBC (μg/mL)

FICI

EO

Thymol

Carvacrol

EO

Thymol

Carvacrol

Escherichia coli

750

187.5

375

1500

375

750

0.5

Clostridium perfringens

750

375

375

1500

750

750

0.5

Salmonella Typhimurium

750

375

375

1500

750

750

0.5

Salmonella Enteritidis

750

750

187.5

1500

1500

750

1.0

Salmonella Pullorum

750

375

375

1500

750

750

0.5

Lactobacillus acidophilus

3000

1500

1500

3000

3000

3000

1.0

Lactobacillus reuteri

3000

1500

1500

3000

3000

3000

1.0

Lactobacillus salivarius

3000

1500

1500

3000

3000

3000

1.0

  1. MIC, the minimum inhibitory concentration; MBC, the minimal bactericidal concentration; EO, essential oil contained 25 % thymol and 25 % carvacrol as active components; FICI, fractional inhibitory concentration index