Skip to main content

Advertisement

Table 7 Antibacterial activity of ethanol extract of P. speciosa seed collected from different locations of Malaysia and antibiotics against bacterial strains

From: Assessment and comparison of phytochemical constituents and biological activities of bitter bean (Parkia speciosa Hassk.) collected from different locations in Malaysia

Bacterial strains Inhibition zone (mm)
Perak Negeri Sembilan Johor Gentamicin Ciprofloxacin DMSO: water (1:9 v/v)
S. aureus 7.2 ± 0.346b 5.1 ± 0.340c 5.0 ± 0.462c 8.4 ± 0.401a 7.4 ± 0.328b No
B. subtilis 8.4 ± 0.320b 8.2 ± 0.411b 6.2 ± 0.140c 9.3 ± 0.355a 8.0 ± 0.349b No
L. monocytogenes 2.0 ± 0.151c No No 4.0 ± 0.307b 4.5 ± 0.279a No
E. coli 1.7 ± 0.130c 1.2 ± 0.153d 0.5 ± 0.115e 4.7 ± 0.227a 4.0 ± 0.201b No
S. typhimurium 5.6 ± 0.429c 4.1 ± 0.208d 5.3 ± 0.346c 6.8 ± 0.430a 6.0 ± 0.490b No
P. aeruginosa 4.1 ± 0.283b 2.8 ± 0.116c No 5.4 ± 0.461a 5.1 ± 0.406a No
  1. All analyses are the mean of triplicate measurements ± standard deviation. Means not sharing a common letter in each row were significantly different at P < 0.05
  2. No not observed