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A biosensor is an analytical device which converts a biological
response into an electrical signal. It consists of 3 parts: the
sensitive biological element, the transducer and the associated
electronics or signal processors that are primarily responsible for
the display of the results in a user-friendly way. The most
widespread example of a commercial biosensor is the blood glucose
biosensor. Recently, arrays of many different detector molecules
have been applied in so-called electronic nose devices, where the
pattern of response from the detectors is used to fingerprint a
substance. There are also several applications of biosensors in
food analysis. Optical sensors are used to detect pathogens and
food toxins. Thus, the light system in these biosensors has been
fluorescence, since this type of optical measurement can greatly
amplify the signal. This book will present research on new
materials, technologies as well as applications in the field of
biosensors.
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