agar and organisms Flashcards
bile esculin agar
enterococcus (group D streptococci)
blood agar: hemolytic (green)
streptococcus viridans (mouth flora) and streptococcus pneumoniae
blood agar: -hemolytic (yellow/clear)
group A streptococcus pyogenes and staphylococcus aureus
blood agar: -hemolytic (non-hemolytic)
enterococcus faecalis (formerly group D) any bugs that do not cause hemolysis
blood agar: CAMP positive
streptococcus agalactiae (displays beta hemolysis when grown next to colonies of beta-hemolytic staph)
bordet-gengou agar
bordetella pertussis (whooping cough)
buffered charcoal yeast extract agar
haemophilus influenza and legionella pneumophilia
chocolate agar
non-selective, enriched media for fastidious bugs such as haemophilus influenza and neisseria meningitidis
lowenstein-jensen agar
mycobacterium tuberculosis
MacConkey agar
gram negative and enteric bacilli and assesses lactose fermentation
regan-lowe edit
bordetella pertussis
sabouraud dextrose agar
fungi
sorbitol MacConkey agar
E coli O157:H7 (does not ferment sorbitol)
thayer-martin agar
neisseria spp
thiosulfate citrate bile salts sucrose agar
vibrio spp
eaton medium
mycoplasma pneumoniae
egg yolk agar
clostridium spp
eosin Methylene blue (EMB) agar
gram negatives and indicator for lactose fermentation
Hektoen enteric agar
used to distinguish shigella (green colonies, no hydrogen sulfide production) from salmonella (black colonies)
loafer’s media
corynebacterium diphtheria
mannitol salt afar
staphylococci (S. aureus produces yellow colonies with the red media)
tellurite media
gray-black colonies= corynebacterium diphtheria
thioglycollate broth
tests the aerotolerance of organisms; obligate anaerobes
xylose-lysine-Deoxycholate (XLD) agar
salmonella/shigella
