Table 1.
Some antimicrobial activities of crude extracts derived from Streptomyces sioyaensis DSM 40032T and Streptomyces sp. TM32
| Test microorganism | DSM 40032T a | TM32a | ||
|---|---|---|---|---|
| Crude extract | Heated‐crude extract | Crude extract | Heated‐crude extract | |
| Gram‐positive bacteria | ||||
| Bacillus subtilis DMST 5871 | + (8.0 ± 0.0) | + (7.5 ± 0.7) | + (8.0 ± 0.0) | + (8.5 ± 0.7) |
| Staphylococcus aureus TISTR 1466 | + (9.5 ± 0.7) | + (10.0 ± 0.0) | + (9.5 ± 0.7) | + (10.0 ± 0.0) |
| Staphylococcus haemolyticus MR‐CoNS 102 | − | − | + (8.0 ± 0.0) | + (8.0 ± 0.0) |
| Gram‐negative bacteria | ||||
| Escherichia coli TISTR 887 | − | − | − | − |
| Phytopathogenic fungi | ||||
| Alternaria alternata TISTR 3435 | + (6.0 ± 0.0) | + (2.0 ± 0.0) | ++++ (37.5 ± 0.7) | +++ (29.0 ± 1.4) |
a
The antimicrobial activity was determined into five levels (excellent ++++, very good +++, good ++, fair +, and no activity −). The value in parenthesis refers to the average size (ø mm) ± standard deviation of the inhibitory zones derived from the duplicate antagonism assays.