Table 1.
Antimicrobial activity of acetone extracts.
| Target Microorganisms | Acetone Extract | ||
|---|---|---|---|
| H. hispanica HM1 | H. salinarum HM2 | ||
| Human pathogenic bacteria | Bacillus cereus | + | + |
| Escherichia coli | + | − | |
| Micrococcus luteus | + | ++ | |
| Staphylococcus aureus | + | + | |
| Marine fish pathogenic bacteria | Aeromonas salmonicida CECT 894T | − | − |
| Edwardsiella tarda CECT 849T | − | − | |
| Lactococcus garvieae CECT 4531T | − | − | |
| Nocardia seriolae DSM 44129T | − | − | |
| Photobacterium damsela damselae CECT 626T | + | ++ | |
| Pseudomonas anguilliseptica CECT 899T | ++ | ++ | |
| Pseudomonas baetica A390T | − | − | |
| Pseudomonas moraviensis DSM 16007T | − | − | |
| Pseudomonas plecoglossicida DSM 15088T | − | − | |
| Streptococcus iniae CECT 7363T | − | − | |
| Streptococcus parauberis DSM 6631T | − | + | |
| Tenacibaculum soleae CECT 7292T | + | − | |
| Vibrio aestuarianus CECT 625T | − | − | |
| Vibrio anguillarum CECT 522T | + | + | |
| Vibrio harveyi CECT 525T | ++ | ++ | |
| Vibrio tapetis CECT 4600T | + | ++ | |
| Yersinia ruckeri CECT 4319T | + | + | |
| Halophilic archaea and bacteria | Haloferax lucentense | + | ++ |
| Haloferax mediterranei | +++ | +++ | |
| Halogeometricum | +++ | +++ | |
| Halogiper | ++ | ++ | |
| Halorubrum | ++ | +++ | |
| Haloterrigena | ++ | ++ | |
| Natrinema | + | + | |
| Salinibacter ruber | +++ | +++ | |
| Microalgae | Chlamydomonas reinhardtii 21GR | + | ++ |
| Chlorella sorokiniana | + | ++ | |
| Dunaliella bardawil | +++ | ++++ | |
| Dunaliella salina | +++ | ++++ | |
| Yeasts | Rhodospirillum toruloides 1854 | − | − |
| Rhodotorula sp. | − | − | |
| Saccharomyces cerevisiae F13A | − | − | |
Microbial susceptibility was tested by agar diffusion assays and expressed as a function of the diameter of the growth inhibition zone: halo from 0.5 to 1 cm (+), halo from 1 to 2 cm (++), halo from 2 to 4 cm (+++) and halo from 4 to 6 cm (++++); absence of susceptibility (−). For a visual aspect of the halos, please refer to Figure 4.