Among them, 4/48 strains (8.33%) exhibited to kill 4 bacteria tested, including Staphylococcus epidermidis ATCC 14990, Staphylococcus aureus ATCC 6538, Bacillus subtilis ATCC 6051A and Bacillus anthracis KEMB 211 - 146; 12/48 strains (25%) were able to inhibit 3 strains; 13/48 strains killed 2 strains and 19/48 strains (39.58%) were only killed 1 strains.