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. 2024 Mar 19;24:127. doi: 10.1186/s12906-024-04404-6

Table 2.

Zone of inhibitory activity of the fruit pulp extracts of T. indica against pathogenic bacteria as compared to the tetracycline drug (positive control) and Tween 20 (negative control)

Extract Concentration (mg/mL) Diameter zone of inhibition (ZI) (mm)
Tested bacteria
S. aureus K. pneumonia
Mean ± SD P-value Mean ± SD P-value
Tetracycline 0.025 16.00 ± 0.33a 16.00 ± 0.57a
Acetone 100 13.00 ± 0.57b 0.00 14.33 ± 0.67a 0.81
200 16.33 ± 0.33a 0.79 17.33 ± 1.40a 0.90
300 17.00 ± 0.57a 0.24 18.67 ± 1.76a 0.46
Tetracycline 0.025 16.00 ± 0.57a 16.00 ± 0.33a
Ethanol 100 13.33 ± 0.88a 0.24 13.67 ± 0.33b 0.00
200 14. 67 ± 1.20a 0.79 15.33 ± 0.33a 0.06
300 16.00 ± 1.00a 1.00 17.67 ± 0.33a 0.20

Key: S. aureus (Staphylococcus aureus (ATCC 25923)), K. pneumonia (Klebseilla pneumonia (ATCC 700603)); ˗, +, ++, +++, 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. Mean values with different superscripts in the same column are significantly different