Selective culture medium

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A selective culture medium is a culture medium which favors the growth of a certain group of microorganisms, for example certain bacteria , while it suppresses the development of other microorganisms. This happens due to the composition of the nutrient medium, since microorganisms have different needs with regard to the culture medium in terms of nutrient composition , pH value etc. and because some substances inhibit other microorganisms in their growth.

Selective culture medium
Surname Cultivation of Remarks
CCD agar Campylobacter contains activated carbon (C for charcoal ), cefoperazone (C) and deoxycholate (D)
Cetrimide agar Detection and differentiation of pseudomonads , especially P. aeruginosa contains u. a. Cetrimide ( cetyltrimethylammonium bromide ) as an inhibitor against numerous bacteria, but which is used by Pseudomonas ; Usable carbohydrates are not included
CIN agar Yersinia contains cefsulodin (C), Irgasan (I) and novobiocin (N)
CNA agar gram positive bacteria contains colistin (C) and nalidixic acid (NA)
Dichlorane-Glycerin-Agar drought- loving ( xerophilic ) or osmotolerant molds  
Endo agar Enterobacteria , especially E. coli at the same time differential medium ( E. coli recognizable by the so-called Fuchsinglanz) comprises lactose utilization by
Eosin Methylene Blue gram negative bacteria, especially Enterobacteriaceae at the same time differential medium, differentiation by positive or negative utilization of lactose and sucrose
Glycerol-Yeastextract-Maltose-Medium Streptomycetes  
MacConkey agar gram negative bacteria, especially salmonella , shigella and coliform bacteria at the same time differential culture medium, comprises lactose utilization by
Mannitol salt agar Staphylococci and micrococci also called Chapman agar
Önöz agar Salmonella and other enterobacteria  
Sabouraud Dextrose Agar Mushrooms acidic pH against bacteria
TCBS agar Isolation and detection of Vibrio cholerae and other vibrions contains u. a. Thiosulfate (T), citrate (C), bile salts (B for bile salts ) and sucrose (S)
Thayer-Martin agar pathogenic Neisseria contains amphotericin B , colistin , trimethoprim and vancomycin , among others
VRB agar Detection of coliform bacteria in water, milk, dairy products, meat and the like a. Food at the same time differential nutrient medium, contains u. a. Crystal violet (V for violet ), neutral red (R for red ) and bile salts (B for bile salts )
XLD agar gram-negative bacteria, especially salmonella and shigella at the same time differential nutrient medium, contains u. a. Xylose (X), lysine (L) and deoxycholate (D)

Individual evidence

  1. Data sheet Cetrimide Agar (Basis) Ph.Eur., For microbiology (PDF) from Carl Roth , accessed on February 10, 2013.
  2. Endo-Agar data sheet (PDF) from Merck , accessed on March 18, 2013.
  3. EMB Agar data sheet (PDF) from Merck , accessed on March 18, 2013.
  4. Data sheet MacCONKEY agar (PDF) from Merck , accessed on March 18, 2013.
  5. Data sheet TCBS agar (Vibrio selective agar) (PDF) from Merck , accessed on March 18, 2013.
  6. Data sheet VRB-Agar (PDF) from Merck , accessed on March 18, 2013.
  7. Data sheet XLD agar (PDF) from Merck , accessed on March 18, 2013.