Plants of the Cerrado with antimicrobial effects against Staphylococcus spp. and Escherichia coli from cattle

BMC Veterinary Research

Table 4 Average inhibition zones (mm) produced in an agar diffusion test in Staphylococcus aureus, Staphylococcus haemolyticus, and Escherichia coli treated with leaf extracts from Annona Crassiflora, Caryocar brasiliense, and Schinopsis brasiliensis with (TA) or without (WT) tannins (1.58 mg/mL)

Bacteria Strains^a	A. crassiflora Ethanolic-		C. brasiliense Ethanolic		C. brasiliense Aqueous		S. brasiliensis Ethanolic		S. brasiliensis Aqueous
Bacteria Strains^a	TA	WT	TA	WT	TA	WT	TA	WT	TA	WT
S135	7.3 ± 0,67 Dd	0	8.1 ± 0,11 Ce	0	6.1 ± 0,08 Ed	0	9.4 ± 0,27 Bb	0	10.0 ± 0,18 Ac	0
S182	6.9 ± 0,38 Ce	0	6.5 ± 0,20 Dg	0	6.1 ± 0,11 Ed	0	9.3 ± 0,22 Bb	0	10.8 ± 0,33 Ac	0
S178	8.6 ± 0,47 Dc	0	8.4 ± 0,04 Dd	0	6.1 ± 0,11 Ed	0	9.1 ± 0,29 Bb	0	9.8 ± 0,11 Ac	0
ATCC 25923	7.0 ± 0,06 Ee	0	7.3 ± 0,18 Df	0	9.4 ± 0,4 Cc	0	10.2 ± 0,22 Ba	0	15.1 ± 0,18 Aa	0
E2	9.8 ± 0,31 Ba	0	8.9 ± 0,18 Dc	0	14.1 ± 0,18 Ab	0	6.2 ± 0,07 Ec	0	9.3 ± 0,22 Cc	0
E3	9.5 ± 0,76 Cb	0	9.4 ± 0,27 Db	0	14.8 ± 0,27 Aa	0	6.1 ± 0,15 c	0	12.4 ± 1,44 Bb	0
ATCC 25922	10.1 ± 0,53 Da	0	11.3 ± 0,2 Ca	0	14.5 ± 0,44 Aa	0	8.5 ± 0,29 Ec	0	11.9 ± 0,22 Bb	0

Lowercase letters in lines indicate significant difference between bacteria strains and uppercase letters in columns indicate significant difference between plant extracts as determined by Scoott-Knott’test with a 5% significance
^a S. haemolyticus (S135 and S182); S. aureus (S178 and ATCC 25923) and E. coli (E2,E3 and ATCC25922)

ISSN: 1746-6148