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Table 2 Mean minimum inhibitory concentrations (MIC) ± standard deviation (SD) of species present in the different orders against the Gram-positive bacteria

From: Which tree orders in southern Africa have the highest antimicrobial activity and selectivity against bacterial and fungal pathogens of animals?

Order n (≥9) MIC (mg/ml) (±SD)
E. faecalis S. aureus Mean of Gram-positive bacteria
Celastrales 19 0.23 ± 0.41 0.37 ± 0.69 0.30 ± 0.47a
Rosales 28 0.21 ± 0.35 0.41 ± 1.04 0.30 ± 0.66a
Myrtales 25 0.28 ± 0.74 0.31 ± 0.52 0.30 ± 0.53a
Fabales 57 0.38 ± 0.79 0.41 ± 0.92 0.40 ± 0.81ab
Ericales 30 0.28 ± 0.47 0.56 ± 1.10 0.40 ± 0.72ab
Sapindales 64 0.34 ± 0.88 0.52 ± 1.04 0.42 ± 0.92ab
Malpighiales 71 0.38 ± 0.84 0.53 ± 1.03 0.45 ± 0.86ab
Malvales 26 0.34 ± 0.57 0.65 ± 0.93 0.47 ± 0.67abc
Apiales 9 0.44 ± 0.71 0.59 ± 1.04 0.51 ± 0.75abc
Proteales 28 0.38 ± 0.49 0.71 ± 1.05 0.52 ± 0.73bc
Lamiales 35 0.44 ± 0.62 0.63 ± 1.00 0.53 ± 0.72bc
Gentianales 64 0.41 ± 0.67 0.69 ± 1.03 0.53 ± 0.80bc
Magnoliales 9 0.64 ± 1.40 0.63 ± 1.22 0.63 ± 1.26bc
Asterales 11 0.58 ± 0.42 1.11 ± 0.78 0.80 ± 0.60c
Degrees of freedom (DF) 13
F value 2.14
Pr > F 0.0114
  1. The orders are arranged from highest to lowest activity (n = the number of tree species analysed in each order; mean MIC values followed by the same superscript letter do not differ significantly at the 5% confidence level).