Research Article

Antibacterial and Antioxidant Properties of the Methanolic Extract of the Stem Bark of Pteleopsis hylodendron (Combretaceae)

Table 1

ID (mm) of the methanolic extract of P. hylodendron.

BacteriaCrude extract (mg/mL)Reference antibiotic ( 𝜇 g/mL)
P. hylodendronAmoxicillinCiprofloxacinGentamicin
200 100 50200

Gram bacteria
E. coli ATCC 11775 1 4 . 7 5 ± 0 . 1 7 f 1 2 . 2 5 ± 0 . 1 7 h 1 0 . 0 0 ± 0 . 0 0 g 1 9 . 0 0 ± 0 . 2 6 d 2 8 . 2 5 ± 0 . 1 7 f 2 7 . 0 0 ± 0 . 2 6 f
E. coli 2 1 . 7 5 ± 0 . 1 3 b 1 9 . 0 0 ± 0 . 0 0 c 1 6 . 7 5 ± 0 . 1 7 c 4 0 . 0 0 ± 0 . 0 0 a 2 7 . 7 5 ± 0 . 1 7 f 2 6 . 0 0 ± 0 . 0 0 h
P. aeruginosa ATCC 27853 1 8 . 6 2 ± 0 . 2 7 d 1 3 . 7 5 ± 0 . 1 7 f 0 . 0 0 ± 0 . 0 0 h 1 4 . 5 0 ± 0 . 4 2 g 3 2 . 5 0 ± 0 . 1 7 d 3 0 . 0 0 ± 0 . 0 0 d
P. mirabilis 2 0 . 1 2 ± 0 . 1 2 c 1 8 . 0 0 ± 0 . 0 0 d 1 6 . 0 0 ± 0 . 0 0 d 1 6 . 0 0 ± 0 . 0 0 f 3 3 . 0 0 ± 0 . 0 0 c 3 3 . 2 5 ± 0 . 1 7 a
S. flexneri 2 1 . 7 5 ± 0 . 1 7 b 1 9 . 7 5 ± 0 . 1 7 b 1 7 . 5 0 ± 0 . 1 8 b 2 0 . 0 0 ± 0 . 0 0 c 3 6 . 5 0 ± 0 . 4 2 a 3 2 . 0 0 ± 0 . 0 0 b
S. paratyphi A 2 0 . 2 5 ± 0 . 1 7 c 1 7 . 0 0 ± 0 . 0 0 e 1 5 . 0 0 ± 0 . 0 0 e 1 2 . 0 0 ± 0 . 0 0 h 3 0 . 0 0 ± 0 . 0 0 e 2 8 . 0 0 ± 0 . 0 0 c
S. paratyphi B 1 9 . 7 5 ± 0 . 1 7 c 1 7 . 6 2 ± 0 . 1 2 d 1 5 . 1 2 ± 0 . 1 2 e 1 4 . 2 5 ± 0 . 1 7 g 3 5 . 0 0 ± 0 . 0 0 b 2 8 . 2 5 ± 0 . 1 7 e
S. typhi ATCC 6539 2 2 . 0 0 ± 0 . 0 0 b 2 0 . 0 0 ± 0 . 0 0 b 1 6 . 8 7 ± 0 . 1 2 c 1 2 . 0 0 ± 0 . 0 0 h 3 2 . 3 3 ± 0 . 2 5 d 3 2 . 0 0 ± 0 . 0 0 b
Gram+ bacteria
E. faecalis ATCC 10541 1 6 . 0 0 ± 0 . 0 0 e 1 3 . 2 5 ± 0 . 1 7 g 1 0 . 8 7 ± 0 . 1 2 f 1 8 . 0 0 ± 0 . 0 0 e 3 2 . 0 0 ± 0 . 0 0 d 3 1 . 0 0 ± 0 . 0 0 c
S. aureus ATCC 25922 1 5 . 0 0 ± 0 . 0 0 f 1 3 . 7 5 ± 0 . 1 7 f 1 1 . 0 0 ± 0 . 0 0 f 2 0 . 7 5 ± 0 . 1 7 c 3 5 . 5 0 ± 0 . 1 8 c 3 0 . 2 5 ± 0 . 1 7 c d
S. aureus 2 5 . 0 0 ± 0 . 0 0 a 2 2 . 0 0 ± 0 . 0 0 a 2 0 . 0 0 ± 0 . 0 0 a 3 5 . 0 0 ± 0 . 0 0 b 2 6 . 0 0 ± 0 . 0 0 h 2 6 . 7 5 ± 0 . 2 4 f h

a , b , c , d , e , f , g , h In the same column, values carrying different letters in superscript are significantly different at 𝑃 . 0 5 (Waller Duncan test).
Diameters of inhibition zones (ID).