Culture Media Flashcards
What are the steps to culture media dispensing/distribution for plated media
Weigh the lyophilized powder
Dissolution
Autoclave
Dispense
Note: Almost same with the tube media. Difference: Autoclave & Dispense
What are the steps to culture media dispensing/distribution for tube media
Weigh the lyophilized agar
Dissolution
Dispense
Autoclave
Note: Almost same with the tube media. Difference: Autoclave & Dispense
Nutrient Agar & Trypticase Soy Broth are examples of what type of media
Classification of media according to fxn
Simple/Supportive/General Purpose
Give 2 examples of the most common enriched media used in the lab
BAP
CAP
LIM’s Broth, Tetrathionate, Selenite F, Alkaline Peptone water are examples of
Classification of media according to fxn
Enrichment media
Enriched media: Solid + additional supplements
Enrichment media: Liquid w/out additional supplements
Crystal violet, Gentian violet, Bile salt, Carbolfuchsin are inhibitors of what type of organisms
(Gram positive, Gram Negative)
Gram positive
Potassium Tellurite, Sodium Azide are inhibitors of what type of organisms
(Gram pos or Gram Neg)
Gram negative
What is used to inhibit swarming of certain organisms?
Alcohol, Chloral Hydrate, Trimethoprim lactate
Phenyl/Ethyl Alcohol, Columbia Agar, Colistin nalidixic agar are selective culture media for?
Gram Positive organisms
Inhibits gram negative organisms
This is a selective media for M. tuberculosis
Lowenstein Jensen
A protein enriched media
What is the inhibitor used for Lowenstein Jensen Agar when cultivating M. tuberculosis
Malachite green
Selective media for Corynebacterium diphtheriae
Loeffler’s medium
Inhibitor used in Loeffler’s medium when cultivating Corynebacterium diphtheriae
Potassium Tellurite
*Inhbitor for gram negative bacteria
Selective medium for N. gonorrhoea
Thayer Martin, Modified Thayer Martin, Martin Lewis, New York City Agar, GC-LECT
Antibiotics used for inhibition in Thayer Martin Agar & Modified Thayer Martin Agar
Vancomysin
Colistin
Nystatin
Modified Thayer Martin: VCN antibiotics + Trimethoprin Lactate (Inhibits swarming)
Antibiotics used for inhibition in Martin Lewis
Vancomysin
Colistin
Anisomysin (Antifungal)
Trimethoprim
Antibiotics used for inhibition in New York City Agar
Vancomysin
Colistin
Amphotericin B (Antifungal)
Nystatin?
Trimethoprim
Antibiotics used for inhibition in GC-LECT
Vancomysin
Colistin
Anisomycin
Trimethoprim
Lincomysin (Gram neg inhibition)
Selective medium for Staphylococcus
Mannitol Salt Agar
Inhibitor: 7.5% NaCl
pH Indicator: Phenol Red
CHO: Mannitol
Selective differential for Vibrio
Thiosulfate Bile Sucrose Agar
CHO: Sucrose
pH Indicator: Bromthymol Blue
K. pneumoniae is what type of lactose fermenter
(Rapid, Late, or Non)
Rapid Lactose Fermenter
*EKE (E. coli, Klebsiella, Enterobacter)
Erwinia is what type of Lactose Fermenter
(Rapid, Late, or Non)
Late Lactose Fermenter
*Yana Eats Half Sugar Cookies
Yersinia, Erwinia, Hafnia, Salmonella arizonae, Shigella sonnei, Serratia, Citrobacter
Serratia is what type of Lactose Fermenter
(Rapid, Late, or Non)
Late Lactose Fermenter
*Yana Eats Half Sugar Cookies
Yersinia, Erwinia, Hafnia, Salmonella arizonae, Shigella sonnei, Serratia, Citrobacter
All Salmonella are Non-Lactose fermenter except
Salmonella arizonae
*Yana Eats Half Sugar Cookies (Mnemonic for Late-Lactose Fermenter)
Yersinia, Erwinia, Hafnia, Salmonella arizonae, Shigella sonnei, Serratia, Citrobacter
Kluyvera & Cedecea are what type of Lactose fermenter
(Rapid, Late, Non)
Non-Lactose Fermenter
*Sugar Can Kill My PaPa Ed
Salmonella, Shigella, Cedecea, Kluyvera, Morganella, Proteus, Providencia, Edwardsiella
What does Lactose fermenters appear as on Eosin Methylene Blue Agar
Pink/Purple Colonies
MacConkey Agar is an example of a selective medium for?
Gram Negative Enteric Bacilli
*My X Eats His Shit
MacConkey, XLD, Eosin Methylene Blue, HEA, Salmonella Shigella
This organism’s colony has a greenish metallic sheen on EMB agar
E. coli
Klebsiella appears _______ on EMB agar
Pink mucoidal colonies
*Klebsiella capsule Forming (Some Killers Have Pretty Nice Capsules)
Rapid Lactos Fermenter (EKE)
Enterobacter colonies appear _________ on EMB
Pink colonies w/ black centers
Enterobacter are NOT H2S +
What are the inhibitors used in MacConkey Agar
Bile Salt & Crystal Violet
Inhibits Gram positive: Bile Salt, Crystal Violet, Gentian Violet, Carbolfuchsin
What inhibitors are present in HEA agar
Bile Salt
Inhibits Gram positive: Bile Salt, Crystal Violet, Gentian Violet, Carbolfuchsin
Sugars used in EMB
Levine: Lactose
Hot Harris: Sucrose
*LeLa loves eating w/ Hot Sauce
Sugars used in MacConkey Agar
Lactose
Sugars used in HEA
Lactose, Salicin, Sucrose
*LSS sa Her
What is the H2S indicator used in Salmonella Shigella Agar
Ferric Ammonium Citrate
All H2S Media uses FAC as indicator EXCEPT FOR TSI which uses Ferric ammonium sulfide
Salmonella colonies appear as _____ on Salmonella shigella agar
Yellow w/ black centers
*Salmonella non-lactose fermenter (Sugar Can Kill My PaPa Ed)
H2S + (SPACE)
*Salmonella Shigella Agar MS Neutral (MacConkey, Salmonella Shigella Agar)
Salmonella arizonae appear as ____ on Salmonella Shigella Agar
Red w/ black centers
*Salmonella Arizonae late lactose fermenter (Yana Eats Half Sugar Cookies)
H2S + (SPACE)
Sugars used in XLD
Xylose, Lactose, Sucrose
Alkaline Peptone water is a special media used for
Vibrio cholerae