The pathogenic detection industry has a market
value that has been rising in the last years, presenting a market value of 563
million dollars in 2002 for the USA.
This industry presents applications in the
health, military, ambient and food areas thus having various sectors to grow.
Despite the several areas of application, it has been in the food industry
where it has displayed more growth, because it’s where there are higher rates
of contamination as we can see in table 1.
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In the market there are two types of analysis:
the conventional method and the rapid where the great difference between them
is the time and precision of the analysis.
Due the great need of controlling the food
quality and ensure the health of the consumers, it becomes necessary a
continuous and strict control, thus more than 100 millions analysis are made
per year in the US, table 2.
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Table 2 - US food industry total microbial
tests per sector
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In the US there are more than 60 thousand food
processing installations, 250 thousand food selling establishments and around
600 thousand restaurants and take-away establishments. All of them are possible
buyers of our detection system of Salmonella.
Screening for the presence of Salmonella
in foods by conventional methods involve a 3-step technique: non-selective
pre-enrichment (18-24 hours), selective enrichment in (at least) two different
selective broth media (24-48 hours) followed by plating on (at least) two
different selective/indicative agars (24-48 hours). This leads to a total time
for yes/no screening result of up to 5 days.
There are
various methods for the detection of the Salmonella bacteria most of them
involve culture enrichment.
At the
moment there are several kits for the detection of Salmonella, which rely in
different technologies like for example real-time PCR and antigens.
Im compiling a table of the common producers of these kits. I'll post it in here in a post to come.
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