比色法检测和识别天然甜味剂与人工合成甜味剂。
Colorimetric detection and identification of natural and artificial sweeteners.
机构信息
Department of Chemistry, University of Illinois at Urbana-Champaign, 600 S. Mathews Avenue, Urbana, Illinois 61801, USA.
出版信息
Anal Chem. 2009 Aug 1;81(15):6526-33. doi: 10.1021/ac901019g.
Abstract
A disposable, low-cost colorimetric sensor array has been created by pin-printing onto a hydrophilic membrane 16 chemically responsive nanoporous pigments that are comprised of indicators immobilized in an organically modified silane (ormosil). The array has been used to detect and identify 14 different natural and artificial sweeteners at millimolar concentrations, as well as commonly used individual-serving sweetener packets. The array has shown excellent reproducibility and long shelf life and has been optimized to work in the biological pH regime.
摘要
一种一次性、低成本的比色传感器阵列已经通过针印技术在亲水膜上制作而成，该阵列包含 16 种化学响应性纳米多孔颜料，这些颜料由固定在有机改性硅烷（ormosil）中的指示剂组成。该阵列已被用于检测和识别 14 种不同的天然和人工甜味剂，浓度达到毫摩尔级，以及常用的单个包装甜味剂。该阵列具有出色的重现性和长保质期，并已针对生物 pH 范围进行了优化。
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