Skip to main content

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