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Chromogenic Sensing of Biogenic Amines Using a Chameleon Probe and the Red−Green−Blue Readout of Digital Camera Images

Steiner, Mark-Steven ; Meier, Robert J. ; Dürkop, Axel ; Wolfbeis, Otto S.
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Date of publication of this fulltext: 18 Mar 2011 06:40


Abstract

We report on sensing spots containing an amine reactive chromogenic probe and a green fluorescent (amine insensitive) reference dye incorporated in a hydrogel matrix on a solid support. Such spots enable rapid and direct determination of primary amines and, especially, biogenic amines (BA). A distinct color change from blue to red occurs on dipping the test spots into a pH 9.0 sample containing ...

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