M J Goldfinch

Learn More
1. A number of reactive triazine dyes specifically and irreversibly inactive yeast hexokinase at pH 8.5 and 33 degrees C. Under these conditions, the enzyme is readily inactivated by 100 microM-Procion Green H-4G, Blue H-B, Turquoise H-7G and Turquoise H-A, is less readily inactivated by Procion Brown H-2G. Green HE-4BD, Red HE-3B and Yellow H-5G and is not(More)
Simple solid-phase optoelectronic sensors for penicillin, urea, and glucose are described. Triphenylmethane dyes such as bromcresol green and bromthymol blue were derivatized with glutathione and co-immobilized with appropriate enzymes to a transparent membrane sandwiched between a red-light-emitting diode and a silicon photodiode with integral amplifier.(More)
determined in the range 3 x 108-2 x lo9 bacteria ml-' with a 2 a precision of 16%. The use of phenazine ethosulphate as a mediator in the work reported here was probably the main cause of greater sensitivity (6 x 106-6 x lo8 bacteria ml-I). This work has demonstrated that bioelectrochemical detectors, working in either the poised-potential or fuel-cell(More)
  • 1