what antibiotic to add to sabouraud agar to inhibit bacteria
Sabouraud agar is used to culture fungi and has a low pH that inhibits the growth of most bacteria; it also contains the antibiotic gentamicin to specifically inhibit the growth of Gram-negative bacteria.
Antibiotics like chloramphenicol, gentamicin, and tetracycline can be added as selective agents to inhibit bacterial overgrowth of competing microorganisms while permitting the successful isolation of fungi and yeasts.