Table 1. Zone of violacein inhibition obtained with the subminimal inhibitory concentrations (46.87–750 μg/mL) of the dietary phytochemicals.
| γ(phytochemical)/(µg/mL) | d(inhibition zone)/mm | |||||
|---|---|---|---|---|---|---|
| CR | QT | PG | GA | LT | AP | |
| 46.87 | (7.0±0.3)a | (7.5±0.1)a | NA | NA | (9.1±0.1)a | (9.3±0.7)a |
| 93.75 | (8.5±0.0)b | (8.0±0.1)b | NA | NA | (10.1±0.4)b | (10.3±0.7)b |
| 187.5 | (9.7±0.1)c | (9.5±0.7)c | NA | NA | (12.3±0.6)c | (11.5±0.5)c |
| 375 | (12.5±0.3)d | (12.0±0.2)d | NA | NA | (13.6±0.5)d | (13.0±0.1)d |
| 750 | (13.3±0.1)e | (13.3±0.5)e | NA | NA | (14.2±0.1)e | (14.3±0.0)e |
CR=curcumin, QT=quercetin, PG=pyrogallol, GA=gallic acid, LT=luteolin, AP=apigenin; NA=no activity. The values in the same column with different letters in superscript are significantly different (p<0.05)