Amperometric biosensors based on solid binding matrices applied in food quality monitoring

Biosens Bioelectron. 1998 Oct 1;13(7-8):911-23. doi: 10.1016/s0956-5663(98)00063-3.

Abstract

Solid binding matrix (SBM) based composite transducers have been used for development of series of multibiosensor systems applicable in various fields. Here we present two hybrid three-channel multibiosensors for simultaneous amperometric operation in food quality control, i.e. glucose/fructose/ethanol multibiosensor, based on glucose oxidase/fructose dehydrogenase/alcohol dehydrogenase surface-modified enzyme electrodes and L-lactate/L-malate/sulfite multibiosensor, based on L-lactate dehydrogenase/L-malate dehydrogenase/sulfite oxidase surface-modified enzyme electrodes. Different parameters have been studied in order to optimize the response of the multibiosensor systems. The multibiosensor showed a good sensitivity, linear range and storage stability. The multibiosensors were used for the determination of glucose, fructose, ethanol, L-lactate, L-malate and sulfite in samples of wine, resulting in a good agreement with data certified by the supplier. Comparison of various designs, surface-modified, bulk-modified and thick-cover, of SBM based biosensors is studied on the example of fructose biosensor.

MeSH terms

  • Biosensing Techniques*
  • Electrochemistry
  • Ethanol / analysis
  • Food Analysis*
  • Fructose / analysis
  • Glucose / analysis
  • Lactic Acid / analysis
  • Malates / analysis

Substances

  • Malates
  • Fructose
  • Lactic Acid
  • Ethanol
  • malic acid
  • Glucose