Whole cell biosensors demand

WHOLE CELL BIOSENSORS FOR ESTIMATION OF BIOCHEMICAL OXYGEN DEMAND... 

The main function of the receptor is to provide the sensor with a high degree of selectivity for the analyte to be measured. While most chemical sensors are more or less selective (specific) for a particular analyte, some are, by design and construction, only class specific, e.g., sensors or biosensors for phenolic compounds, or whole-cell biosensors used to measure the biological oxygen demand. 

Organic pollution is measured by a well-established and standardized test which records the biological oxygen demand (BOD). The test requires sample incubation over S days at 20 °C. The BOD measurement can be made in a much shorter time (about IS minutes) with a microbial biosensor [62]. This sensor is based on the immobilization of whole hydrogen-producing bacteria cells (Clostridium butyricum) on the oxygen-permeable membrane of a pC>2... 

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