Harmful or nonpathogenic bacteria | Beneficial bacteria |
---|---|
Gram-positive | Gram-positive lactic acid-producing bacteria |
 Clostridium difficile ATCC 9689 | Bifidobacterium bifidum ATCC 29521 |
  Clostridium paraputrificum ATCC 25780 | Bifidobacterium breve ATCC 15700 |
  Clostridium perfringens ATCC 13124 | Bifidobacterium infantis ATCC 25962 |
  Staphylococcus aureus ATCC 12600 | Bifidobacterium longum ATCC 15707 |
 | Lactobacillus acidophilus ATCC 4356 |
 | Lactobacillus casei ATCC 393 |
Gram-negative | Gram-positive acidulating bacterium |
 Bacteroides fragilis ATCC 25285a | Clostridium butyricum ATCC 25779 |
 Escherichia coli ATCC 11775a |  |
  Salmonella typhimurium ATCC 13311 |  |