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Food scientists design sensor for listeria detection
Food scientists continue to roll out tools in the fight against foodborne pathogens as researchers in the US design a new biosensor to detect the potentially deadly bacteria Listeria monocytogenes.
The antibody-based fibre-optic biosensor created by food scientists at Purdue University can detect the listeria bacteria in less than 24 hours at concentrations as low as 1,000 cells per millilitre of fluid – equivalent to the size of a pencil rubber.
According to the researchers, the sensor is selective enough to recognise only the species monocytogenes.
Listeria monocytogenes (Lm), an emerging foodborne disease because the role of food in its transmission has only recently been recognised, can cause abortion and stillbirth, and in infants and persons with a weakened immune system it may lead to septicemia (blood poisoning) and meningitis.
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Date Listed: 2004-10-07
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