Listeria-ID
system improved by Microgen
Source
of Article: http://www.laboratorytalk.com/news/ymr/ymr103.html
A Microgen
Bioproducts product story
Edited by the Laboratorytalk editorial team May 7, 2009
Microgen Bioproducts has
improved the Aoac-Ri validated Microgen Listeria-ID to make the system a
user-friendly and cost-effective method of identifying Listeria species.
The Microgen Listeria-ID is a
biochemical identification system that consists of 10 sugar fermentation
tests, Aesculin hydrolysis and an improved micro-haemolysis reaction.
Microgen Bioproducts has
improved the Aoac-Ri validated Microgen Listeria-ID.
The system does not require
any reagent additions and reduces laboratory costs while utilising
substrates that conform to all international standards.
Microgen Listeria-ID has been
improved to provide an easy-to-read method of differentiating haemolytic
and non-haemolytic Listeria spp.
Haemolytic and non-haemolytic
Listeria spp have traditionally been differentiated by the sub-culture from
selective medium to sheep blood agar for the detection of haemolytic activity
or by performing the variable, complex and difficult to interpret Camp
test.
The inclusion of a sensitive
and stable micro-haemolysis in the Microgen Listeria-ID allows for the easy
interpretation of haemolysin production by haemolytic Listeria spp; if an
organism produces haemolysin, the red blood cells will rapidly be lysed,
releasing cellular contents forming a red/brown solution.
If an organism does not
produce haemolysin the red blood cells will remain intact and form a
distinct red pellet with clear supernatant, indicating a negative result.
As with all the Microgen-ID
range, the Microgen Identification System Software, provides laboratories
with an accurate identification package.
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