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Table 2 Effects (mean percentage ± SE) of tested essential oils on inhibition of egg hatching of H. contortus

From: Essential oils of Citrus aurantifolia, Anthemis nobile and Lavandula officinalis: in vitro anthelmintic activities against Haemonchus contortus

Concentration (mg/ml)

C. aurantifolia

A. nobilis

L. officinalis

50

100.0 ± 0.0a,b

99.0 ± 0.38a,b

100.0 ± 0.0a,b

25

100.0 ± 0.0a,b

99.4 ± 0.87a,b

100.0 ± 0.0a,b

12.5

98.9 ± 1.87a,b

97.0 ± 2.38a,b

99.8 ± 0.30a,b

6.25

96.4 ± 2.61a,b

95.7 ± 2.13a,b

99.4 ± 0.94a,b

3.125

95.9 ± 2.41a,b

86.4 ± 4.71b

92.3 ± 3.03b

1.562

86.9 ± 2.33b

74.5 ± 3.58b

82.8 ± 3.62b

0.781

56.2 ± 3.97b

63.3 ± 4.12b

85.0 ± 3.15b

0.390

42.1 ± 4.70b

26.6 ± 1.46b

81.8 ± 1.36b

0.195

14.9 ± 3.89b

13.4 ± 2.33b

9.5 ± 1.54b

0.097

13.0 ± 1.44b

14.1 ± 2.60b

6.8 ± 1.69

 

IC50 = 0.694 mg/ml

IC50 = 0.842 mg/ml

IC50 = 0.316 mg/ml

 

R2 = 0.985

R2 = 0.978

R2 = 0.950

Thiabendazol (0.025 mg/ml)

100.0 ± 0.0b

100.0 ± 0.0b

100.0 ± 0.0b

Tween 80 (3%)

7.6 ± 0.85

7.4 ± 3.94

3.5 ± 0.82

  1. Abbreviations: IC50, inhibitory concentration 50%; R2, nonlinear correlation coefficient
  2. aNo statistically significant difference between positive control and treatments
  3. bSignificant difference between positive control or treatments with negative control (ANOVA, followed by Tukey test; P < 0.05)