22. 2: Selective and Differential Media - MacConkey, EMB, MSA Media: Mannitol Salt Agar (MSA) contains mannitol, 7 5% sodium chloride, and phenol red Reagents Indicators: Phenol red Mechanism reactions: Salt concentration will inhibit most other organisms so the media is selective for staphylococci
SELECTIVE AND DIFFERENTIAL MEDIA - Western Washington University Mannitol salt agar is a selective medium used for the isolation of pathogenic staphylococci The medium contains mannitol, a phenol red indicator, and 7 5% sodium chloride The high salt concentration inhibits the growth of most bacteria other than staphylococci
In what ways are MacConkey agar, eosin methylene blue agar, and . . . MacConkey agar, Eosin Methylene Blue (EMB) agar, and Mannitol Salt Agar (MSA) are three types of selective media used in microbiology to isolate and differentiate bacteria based on specific characteristics: MacConkey Agar: This medium is selective for Gram-negative bacteria
SELECTIVE AND DIFFERENTIAL MEDIA – Hands On Microbiology MANNITOL SALT AGAR (MSA) is both a selective and differential media MSA selects for gram positive bacteria because it contains 7 5% sodium chloride, nearly ten times the usual concentration seen in most media
Mannitol Salt, Mac Conkey, and Eosin Methylene Blue Agars . . . - Studocu Selective Media - encourages the growth of certain types of microbes, while inhibitors added to the media prevent the growth of others Mannitol salt agar (MSA) is both a selective and differential medium, primarily used to identify Staphylococcus aureus, one of the only Staphylococci species capable of mannitol fermentation
Lab Test 13, 14, 15 Flashcards - Quizlet Mannitol Salt agars How can MacConkey's agar be selective and differential at the same time? Selectively, it contains crystal violet which inhibits the growth of Gram + bacteria
Bio. Sci. 4 | Microbiology Illustrations - Sierra College MacConkey's agar is a good selective medium in that it fully inhibited the growth of the Gram-positive organisms deposited on its surface Eosin Methylene Blue agar or EMB contains lactose, eosin and methylene blue Like Tergitol-7 and MacConkey's agar it contains lactose, and tends to inhibit the growth of Gram-positive bacteria
SELECTIVE AND DIFFERENTIAL MEDIA - YSU Microbiologists employ a seemingly unending variety of selective and differential media, alone or in combination, to study specific microbes – especially those of economic or medical importance In this exercise on four types of selective and or differential media will be examined
Dif and Sel Media (pdf) - CliffsNotes Eosin Methylene Blue agar is specifically selective for Gram-negative bacteria Mannitol Salt Agar Mannitol Salt Agar is a selective and differential media that selects for Staphylococcus The ingredient that makes this media selective is 7 5% sodium chloride