| Indicators Organisms | Inhibition activity of isolates | ||||
| DUA4 | DUC1 | DUD3 | DUE2 | DUF3 | |
| B. subtilis (ATCC 6051) | ++ | − | ++ | − | − |
| E. coli (ATCC 25922) | ++ | − | − | − | − |
| P. aeruginosa (MTCC 4673) | − | − | ++ | − | − |
| S. epidermidis (MTCC 6810) | ++ |
| ++ | − | − |
| L. monocytogenes (ATCC BAA-751) | +++ | − | ++ | + | − |
| S. typhimurium (ATCC 49416) | − | − | ++ | − | − |
| B. cereus (ATCC 11778) | +++ | − | ++ | − | − |
| S. aureus (MTCC 9542) | − | − | +++ | − | − |
| Key: +++ = Greater than 19 mm, ++ = 14 to 19 mm, + = 11 to 14 mm, − = 11mm | |||||