Table 2.
Summary of antimicrobial activities of various species. Shown are mean values ± SD from three separately cultures.
| Species | I. galbana | Chlorella sp. FN1 | Scenedesmus sp. NT8c | ||
|---|---|---|---|---|---|
| Extracts | 100% ethyl acetate | 100% ethanol | 70% methanol in water | 70% methanol in water | |
| Fractions | Hexane | Hexane | Hexane | ||
| Target pathogens | L. monocytogenes | 12.67a(±0.58) | 19.67 (±0.58)* | 16.67(±0.58)* | 18.3(±1.15)* |
| S. aureus | – | 20(0)* | 16.33(±0.58)* | 17.67(±1.53)* | |
| B. subtilis | – | 19.33(±0.58)* | 15.67(±1.15)* | 18.33(±1.15)* | |
| E. coli | – | – | – | – | |
| S. typhoid | – | – | – | – | |
| P. syringae | – | – | – | – | |
| C. michiganensis | – | 16.33(±2.31)* | 18.67(±1.53)* | 17(0)* | |
| S. epidermidis | – | 18.33(±0.58)* | 16.67(±0.58)* | 16.67(±0.58)* | |
| E. faecalis | – | 19.33(±1.15)* | 19.67(±0.58)* | 18.33(±1.15)* |
(–) No zone of inhibitions were observed.
a
Mean diameter of triplicates inhibition zones were calculated.
*
Values indicate statistically significant differences (T-test; p < 0.05).