Biosensors for Environmental Control

Possible Developments in Microbial and Other Sensors for Fermentation Control

“…Here, as in research laboratories world wide, work on these devices continues, and much remains to be done (for examples and reviews of recent work on various types of biosensor in Japan and in other countries, see Carr and Bowers., 1980;Wingard, Katzir and Goldstein, 1981;Suzuki, Satoh and Karube, 1982;Karube and Suzuki, 1983;Lowe, Goldfinch and Lias, 1983;Mosbach, Mandenius and Danielsson, 1983;Wingard., 1983;Aston and Turner, 1984;Neujahr, 1984). Because sensors which work wen under laboratory conditions do not always succeed when placed in industrial media, basic research on sensors using not only micro-organisms now available, but also, possibly, new mutants with improved properties, must be backed up by developmental modification and refinement.…”

Development of a Sensor for Acetic Acid Based onFusarium solani

“…Acetate sensor based on Trichosporon brassicae had a response time of between 6 and 10 minutes with a stability of 21 days and a range linear up to 22.5 mg=dm 3 [7,8]. A microbial sensor for acetic acid based on Trichosporon brassicae immobilized in acetyl cellulose had a measuring range of 0.08-1.2 mmol=dm 3 and a very quick response time of 8 s. It has been reported that this sensor had a precision of 6 % and a stability of 21 days [9][10][11].…”

The development of whole cell biosensors for on‐line screening of herbicide pollution of surface waters

“…Biosensors, which are devices that transduce a selective biochemical response into an electrical signal, can offer practical alternatives in environmental monitoring particularly in terms of cost, ease of manufacture, and ability to reduce the test system's complexity to a minimum and suitability for on-line applications. (Neujahr, 1984). A further advantage offered by biosensors is that a specific determination can be carried out in multicomponent solutions thereby alleviating the need for any complicated and time-consuming separation procedures (Thompson, 1984).…”