期刊
ANALYTICAL CHEMISTRY
卷 81, 期 22, 页码 9493-9498出版社
AMER CHEMICAL SOC
DOI: 10.1021/ac901977u
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资金
- University of Zurich
Corrin-based chemosensors allow the rapid and selective colorimetric detection of endogenous biological cyanide. The color change from orange to violet can be easily observed with the naked eye (Delta lambda(max) = 51 nm). The methodology works directly in the biological matrix without time-consuming sample pretreatment and the use of special reaction conditions. It was possible to study the enzymatic release of cyanide from its biological precursor linamarin with diffuse reflectance UV-visible (DRUV-vis) spectroscopy on a freshly prepared biological surface. These experiments were accompanied by stopped-flow kinetic measurements under homogeneous conditions. Detection in the biological sample is based on the selective coordination of cyanide to the metal-based chemosensor as proven by UV-vis and (1)H NMR spectroscopy. Examples of applications during food manufacturing are given.
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