Culture Media Flashcards
Diff & Iso for Group D Streptococci & Enterococci
Bile esculin agar (BEA)
iso & selective for vancomycin resistant enterococci
Bile esculin azide agar with vancomycin
Cultivation of nonfastidious microorganisms; determination of hemolytic reactions
Blood agar
Iso of Bordetella pertussis and Bordetella parapertussis
Bordet-Gengou Agar
Cultivation of fastidious organisms
Brain-heart infusion agar or broth
Enrichment of Legionella spp
Growth for Francisella & Nocardia
BYCE
Enrichment & Selection of Legionella spp.
BCYE + antibiotics
Recovery of Burkholderia cepacia from Cystic fibrosis patients
Burkholderia cepacia selective agar
Selec for Campylobacter spp.
Campy-blood agar
Selective & holding medium for recovery of Campylobacter spp.
Incubate at 4 degrees celcius for cold enrichment
Campylobacter thioglycollate broth
Improved growth of obligate, slow-growing anaerobes
CDC anaerobe 5% sheep blood agar
Selective medium for isolation of Campylobacter spp.
Cefoperazone, vancomycin, amphotericin (CVA) medium
Selective for Yersinia spp.
Isolation of Aeromonas spp.
Cefsulodin-irgasan- novobiocin (CIN) agar
Cultivation of fastidious microorganisms
Haemophilus
Brucella
Pathogenic Neisseria
Chocolate agar
Iden of yeasts, MRSA & others
Chromogenic media
Selective isolation of G (+) cocci
Columbia colistin-nalidixic acid agar (CNA)
Isolation of Corynebacterium diphtheriae
Cysteine-tellurite blood agar
Iso & diff of Lactose & Non-lactose fermenting enteric bacilli
Eosin-methylene blue agar (EMB) (Levine)
Selective (enrichment) liquid medium for enteric pathogens
Gram-Negative broth
Iso,selec,diff of Salmonella & Shigella spp. from other gram-negative enteric bacilli
Hektoen Enteric Agar (HE)
Iso & growth of Corynebacterium spp.
Loeffler medium
Iso & diff of Lactose & non-lactose fermenting enteric bacilli
MacConkey agar
Selec & diff of E. coli O157:H7 in stool specimens
MacConkey sorbitol agar
Selective differentiation of Staphylococci
Mannitol salt agar
Selective for Neisseria gonorrheae
Supports growth of Ureaplasma urealyticum & some Mycoplasma spp.
NYC agar
iso & selec of Aerobic gram-positive cocci & bacilli and
Anaerobic gram-positive cocci & gram-negative bacilli
Phenylethyl Alcohol agar (PEA)
Enrichment & selective for isolation of Bordetella pertussis
Regan Lowe
Selective for Salmonella & some Shigella spp
Salmonella-Shigella agar (SS)
Nonselective medium for recovery of aerobes & anaerobes
Selective for Campylobacter & Helicobacter spp.
Schaedler agar
Enrich & isolation of Salmonella spp.
Selenite broth
Selective for S. pyo & S. agalactiae
Streptococcal Selective Agar (SSA)
Selective for Salmonella & Shigella except Salmonella enterica Typhi
Tetrathionate broth
Selective for N. gonorrheae & N. meningitidis
Thayer-Martin agar
Supports growth of Francisella and Brucella spp.
Modified Thayer-Martin Agar
Supports growth of anaerobes, aerobes, microaerophilic, and fastidious organisms
Thioglycollate broth
Selective and diff for Vibrio spp.
Thiosulfate Citrate- Bile Salts agar (TCBS)
Selec & enrichment for Streptococcus agalactiae in female genital specimens
Todd-Hewitt broth w/ antibiotics (LIM)
Enrichment broth used for subculturing various bacteria from primary agar plates
Trypticase Soy Broth (TSB)
Isolation & diff of Salmonella & Shigella spp. from other gram-negative enteric bacilli
Xylose Lysine Deoxycholate Agar (XLD)
Yeast extract agar with lysine, xylose, lactose, sucrose, and ferric ammonium citrate; sodium deoxycholate inhibits gram-positive organisms; phenol red as indicator
XLD
All-purpose enrichment broth that can support the growth of many fastidious and nonfastidious bacteria
TSB
Supplemented with nalidixic acid and gentamicin or colistin for greater selectivity; thioglycollate and agar reduce redox potential
Todd-Hewitt Broth with antibiotics (LIM)
Peptone base agar with yeast extract, bile salts, citrate, sucrose, ferric citrate, and sodium thiosulfate; bromthymol blue acts as indicator
TCBS
Pancreatic digest of casein, soy broth, and glucose enrich growth of most microorganisms; includes reducing agents thioglycollate, cystine, and sodium sulfite; semisolid medium with a low concentration of agar reducing oxygen diffusion in the medium
Thioglycollate broth
Blood agar base enriched with hemoglobin and supplement B; contaminating organisms inhibited by colistin, nystatin, vancomycin, and trimethoprim
TM/MTM agar
Peptone-base broth; iodine and potassium iodide, bile salts, and sodium thiosulfate inhibit gram- positive organisms and Enterobacteriaceae
Tetrathionate broth
Contains crystal violet, colistin, and trimethoprim-sulfamethoxazole in 5% sheep blood agar base
Streptococcal selective agar (SSA)
Peptone and soy protein–base agar with lysed horse blood; vancomycin inhibits gram-positive organisms; polymyxin B and trimethoprim inhibit most gram-negative organisms
Skirrow agar
Selective for Campylobacter spp.
Skirrow agar
Peptone-base broth; sodium selenite toxic for most Enterobacteriaceae
Selenite agar
Peptone and soy protein base agar with yeast extract, dextrose, and buffers; addition of hemin, L-cysteine, and 5% blood enriches for anaerobes
Schaedler agar
Peptone base with lactose, ferric citrate, and sodium citrate; neutral red as indicator; inhibition of coliforms by brilliant green and bile salts
SS agar
Charcoal agar supplemented with horse blood, cephalexin, and amphotericin B
Regan Lowe
Nutrient agar base; phenylethyl alcohol inhibits growth of gram-negative organisms
Phenylethyl Alcohol Agar
Peptone agar base with cornstarch, supplemented with yeast dialysate, 3% hemoglobin, and horse plasma; antibiotic supplement includes vancomy- cin (2 μg/mL), colistin (5.5 μg/mL), amphotericin B (1.2 μg/mL), and trimethoprim (3 μg/mL)
NYC
Peptone base, mannitol, and phenol red indicator; salt concentration of 7.5% inhibits most bacteria
Mannitol salt agar
A modification of MacConkey agar in which lactose has been replaced with D-sorbitol as the primary carbohydrate
MacConkey sorbitol agar
Peptone base with lactose; gram-positive organisms inhibited by crystal violet and bile salts; neutral red
as indicator
MacConkey agar
Peptone-base agar with bile salts, lactose, sucrose, salicin, and ferric ammonium citrate; indicators include bromthymol blue and acid fuchsin
Hektoen enteric (HE) agar
Peptone-base broth with glucose and mannitol; sodium citrate and sodium deoxycholate act as inhibitory agents
Gram-negative broth (GN)
Peptone base containing lactose; eosin Y and methylene blue as indicators
Eosin methylene blue (EMB) agar (Levine)
Infusion agar base with 5% sheep blood; reduction of potassium tellurite by Corynebacterium diphtheriae produces black colonies
Cystine-tellurite blood agar
Columbia agar base with 10 mg colistin per liter, 15 mg nalidixic acid per liter, and 5% sheep
blood
Columbia colistin- nalidixic acid (CNA) agar
Organism-specific nutrient base, selective supple- ments, and chromogenic substrate
Chromogenic media
Peptone base, enriched with solution of 2% hemo- globin or IsoVitaleX (BD BBLTM Becton Dickenson, Sparks MD)
Chocolate agar
Peptone base with yeast extract, mannitol, and bile salts; supplemented with cefsulodin, irgasan, and novobiocin; neutral red and crystal violet indicators
Cefsulodin-irgasan- novobiocin (CIN) agar
Blood-supplemented enrichment medium containing cefoperazone, vancomycin, and amphotericin to inhibit growth of most gram-negative bacteria, gram-positive bacteria, and yeast, respectively
Cefoperazone, vancomy- cin, amphotericin (CVA) medium
Tryptic soy broth with phenyl-ethyl alcohol, 5% sheep blood, and added nutrients
CDC* anaerobe 5% sheep blood agar
Thioglycollate broth supplemented with increased agar concentration and antibiotics
Campylobacter thioglycollate broth
Contains
vancomycin (10 mg/L),
trimethoprim (5 mg/L),
polymyxin B (2500 U/L),
amphotericin B (2 mg/L),
cephalothin (15 mg/L)
in a Brucella agar base with sheep blood
Campy-blood agar
Bile salts, gentamicin, ticarcillin, polymyxin B, peptone, yeast extract
Burkholderia cepacia
selective agar
BCYE supplemented with polymyxin B, vancomycin, and ansamycin to inhibit gram-negative bacteria, gram-positive bacteria, and yeast, respectively
Buffered charcoal–yeast extract (BCYE) agar with antibiotics
Yeast extract, agar, charcoal, and salts supplemented with L-cysteine HCl, ferric pyrophosphate, ACES buffer, and alpha-ketoglutarate
Buffered charcoal–yeast extract agar (BCYE)
Dextrose, pork brain, and heart dehydrated infusions
Brain-heart infusion agar or broth
Potato-glycerol–based medium enriched with 15%- 20% defibrinated blood; contaminants inhibited by methicillin (final concentration of 2.5 μm/mL)
Bordet-Gengou agar
Trypticase soy agar, Brucella agar, or beef heart infusion with 5% sheep blood
Blood agar (BA)
Contains azide to inhibit gram-negative bacteria, vancomycin to select for resistant gram-positive bacteria, and bile esculin to differentiate entero- cocci from other vancomycin-resistant bacteria that may grow
Bile esculin azide agar with vancomycin
Nutrient agar base with ferric citrate. Hydrolysis of esculin by group D streptococci imparts a brown color to medium; sodium deoxycholate inhibits many bacteria.
Bile esculin agar (BEA)