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Table 1 Growth inhibitory level of fruit pulp extracts of T. indica against pathogenic bacteria as compared to the tetracycline antibiotic (positive control) and Tween 20 (negative control)

From: In vitro antibacterial activity of fruit pulp extracts of Tamarindus indica against Staphylococcus aureus and Klebsiella pneumoniae

Extract

Concentration (mg/mL)

Effect level

Tested bacteria

S. aureus

K. pneumonia

Tween 20

1

–

–

Tetracycline

0.025

++++

++++

Acetone

100

+

++

200

+++

+++

300

++++

++++

Ethanol

100

++

++

200

+++

+++

300

++++

++++

  1. Key: S. aureus (Staphylococcus aureus (ATCC 25923)), K. pneumonia (Klebseilla pneumonia (ATCC 700603)); Ë—, +, ++, +++, and ++++ shows the extract used could have no effect, weak effect, moderate effect, strong effect, and very strong effect on the growth of the selected organisms respectively