what are they?
Biosensors are biophysical devices which can detect the presence of tspecific substances e.g. sugars, proteins, hormones, pollutants and a variety of toxins. They are also capable of measuring the quantities of these specific substances.
Technically a “Biosensor” is defined as “an analytical device containing an immobilized biological material (which could be an enzyme, or antibody, or nucleic acid, or hormone, or an organelle/whole cell), which can specifically interact with an analyte and produce physical, chemical or electrical signals that can be measured. An analyte is the compound (e.g. glucose, urea, drug, pesticide) whose concentration has to be measured. Biosensors basically involve the quantitative analysis of various substances by converting their biological actions into measurable signals. Generally the performance of the biosensors is mostly dependent on the specificity and sensitivity of the biological reaction, besides the stability of the enzyme.
(Ref. no - 1)
Technically a “Biosensor” is defined as “an analytical device containing an immobilized biological material (which could be an enzyme, or antibody, or nucleic acid, or hormone, or an organelle/whole cell), which can specifically interact with an analyte and produce physical, chemical or electrical signals that can be measured. An analyte is the compound (e.g. glucose, urea, drug, pesticide) whose concentration has to be measured. Biosensors basically involve the quantitative analysis of various substances by converting their biological actions into measurable signals. Generally the performance of the biosensors is mostly dependent on the specificity and sensitivity of the biological reaction, besides the stability of the enzyme.
(Ref. no - 1)