CULTURE MEDIA Flashcards
ppt/trans based
also known as Agar-agar
Agar
“In vitro”
outside of the body
agar comes from
Red algae
cultivating microorganisms in vitro provides the appropriate biochemical and biophysical environment for microbial growth
Cultivation
agar consistency
gelatin-like consistency
material/substance to be inoculated in the agar
Inoculum
types of culture
pure
mixed
stock
virign/single species of
organisms)
pure
more than 2 organisms
mixed
for storage/maintained in order to keep microorganisms viable/alive
stock
classification of agar according to:
PHYSICAL STATE
CONSISTENCY
COMPOSITION
HOW THE MEDIUM IS DISPENSED AND USE
types of colony
Mucoid colony
Smooth Colony
Rough Colony
sticky/wet
Mucoid colony
Dull, dry
Rough Colony
Shiny, glistening surface
Smooth Colony
contains 0.5-1.5% of agar
SEMISOLID
what bacteria has condom shaped colonies
Mycobacterium
classification of culture media according to physical state/consistency
LIQUID
SEMISOLID
SOLID
without any trace of agar or solidifying substance
LIQUID
contains 2-3% of agar
SOLID
ACCORDING TO COMPOSITION
SYNTHETIC
NON-SYNTHETIC
TISSUE CULTURE MEDIUM
Medium in which all components are known
SYNTHETIC
Medium which some of the substances are
unknown
NON-SYNTHETIC
Obligate intracellular bacteria
TISSUE CULTURE MEDIUM
ACCORDING TO DISPENSING OR DISTRIBUTION
PLATED
TUBED
Tube media are prepared as either LIQUID, SLANT, BUTT AND SLANT, or BUTT
TUBED
manner of inoculation in triple sugar iron
Slant and butt
manner of inoculation in urea
slant
streak
manner of inoculation in lysine iron sugar
Stab
Streak
Stab
manner of inoculation in simmon’s citrate
slant
manner of inoculation in christensen’s urea agar
slant
what color does cua produce when it is positive
pink
manner of inoculation in sulfide indole motility
stab
production of sulfide (color)
black
indole (color)
red rings in top
motility
turbid agar
● Supports most non-fastidious bacteria
● for primary isolation of microorganism
● Designed to grow a broad spectrum of microbes
basal media
has blood, serum, egg, yolk, vitamins, AA
● Supports growth of fastidious organisms
● Solid culture bacteria
ENRICHED
blood type that is used in enriched media
Type O
blood in heat causes lysis making its color brown
Chocolate agar plates
Promotes growth of certain organisms
Liquid culture bacteria
ENRICHMENT
contains inhibitory agents that prevents / suppress
growth of unwanted microbes
permits preliminary identification of genus or spp.
SELECTIVE
Make it easy to distinguish colonies of different microbes
DIFFERENTIAL MEDIA
complete hemolysis (yellow)
beta hemolysis
THREE HEMOLYTIC PATTERNS
beta hemolysis
alpha hemolysis
gamma hemolysis
incomplete/partial hemolysis
alpha hemolysis
no hemolytic pattern
gamma hemolysis
used for yeasts and molds for counting
Potato Dextrose Agar
SPECIMEN TRANSPORT
CARY-BLAIR
AMIES
TRANSGROWTH
STUART
Used for specimens that are sensitive for drying
SPECIMEN TRANSPORT
used for AST [Antimicrobial Susceptibility Testing] to determine if bacteria is drug-resistant or drug-susceptible
Mueller-Hinton agar (MHA)