practical summary of microb 2
kiri : Bacitracin test (transparent colony-B complete haemolysis)
sensitive: Streptococcus pyogene
resistant: other than Group A
kanan : Optochin test
(grennish discolouration-alpha partial heamolysis)
closer view-Optochin test
sensitive : Streptococcus Pneumoniae/Pneumococci
resistance : Streptococci Viridans
kiri : mannitol salt agar (MSA)-selective media
kanan : Staphylococci Aureus
-ferment mannitol produce colonies
surrounded by yellow halloes-
COLONY ON BLOOD AGAR : ada 3
1. alpha haemolytic streptococci
2. beta heamolytic streptococci
3. beta haemolytic staphyloccoci
alpha haemolytic streptocci
(greenish discolouration)
perhatikan 2 perbezaan di bawah ini!!
beta haemolytic streptoccoci
(translucent pin point no pigmented colony surrounded by large haemolysis)
beta haemolytic staphylococci
(white large pigmented colony
surrounded by small zone of haemolysis)
2nd point to be noticed :
staph - non fastidious (both nutrient & blood agar)
strep - fastidious (only in blood agar)
see below!!
-sori gambar tak berapa jelas-
then, please recognize 4 things yang guna nutrient agar as medium:-
1. pigmented colony (kat atas)
2. Novobiocin test
resistance : Staphylococcus Saprophyticus
sensitive : Staphylococcus Epidermidis
3. antibiotic sensitivity test
disc diffusion method (staphylococci)
4.Phage typing
best method for typing Staphylococci
last test : HEAT RESISTANCE TEST
(Enterococcus fecalis)
E. faecalis can withstand heat at 60C for 30 mins
last but not least
blood culture media : DIPHASIC MEDIUM
slope of nutrient agar+10ml sulphonated broth
sekian untuk summary microbe 2
sori lambat
selamat study
:)