Chemistry: molecular biology and microbiology – Measuring or testing process involving enzymes or... – Involving viable micro-organism
Patent
1988-07-28
1992-10-13
Lacey, David L.
Chemistry: molecular biology and microbiology
Measuring or testing process involving enzymes or...
Involving viable micro-organism
435 39, 435291, 435807, 435808, 436164, 436165, 250343, 250576, 356437, 422 8205, 422 8209, C12Q 104, C12M 134
Patent
active
051550199
ABSTRACT:
A method and apparatus for detecting the presence of biological activity in a sample of material. In the method, a sample of the material is placed in a closed container with a growth medium which includes a carbon source which may be metabolized to produce carbon dioxide. The medium with the sample therein is exposed to conditions conducive to the occurrence of normal metabolic process for a period of time sufficient to cause production of CO.sub.2 by the metabolism of the carbon source. Thereafter, the presence of CO.sub.2 in the gaseous atmosphere above the medium is detected by measuring the infrared absorbance of the gaseous atmosphere with the container by passing an infrared beam through the container and the gaseous atmosphere and detecting the infrared absorbance of the gaseous atmosphere.
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Ahnell Joseph E.
McCarthy Laurence R.
Sussman Mark L.
Becton Dickinson and Company
Beisner William H.
Lacey David L.
Passman Aaron
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