Development of an electrochemical cholesterol sensor system for food analysis.
In this article, we report on a food-cholesterol monitoring sensor based on a non-enzymatic approach. Amorphous and single-crystal gold electrodes were modified with an alkanethiol self-assembled monolayer to quantify it by voltammetry. We first discuss the basic characteristics of these sensors and provide more information about the instrument developed by JSK Co. This instrument is a battery-operated handheld voltammetric analyzer, which mounts a sensor chip to monitor cholesterol contents in food samples. The sensor showed excellent linearity with the cholesterol concentration; egg-yolk samples were analyzed to give an excellent agreement between the values obtained by the sensor (1.4 mM) and chromatography (1.1 mM).
Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, Naka, Sakai 599–8570, Japan. nagaoka@chem.osakafu-u.ac.jp
Tsutomu
T
Nagaoka
Shiho
S
Tokonami
Hiroshi
H
Shiigi
Hiroaki
H
Matsumoto
Yasuhiro
Y
Takagi
Yasunori
Y
Takahashi
D002623:Chemistry Techniques, Analytical / Q000295:instrumentation*; D002784:Cholesterol / Q000032:analysis* / Q000737:chemistry; D004563:Electrochemistry / Q000295:instrumentation / Q000379:methods*; D004566:Electrodes; D005504:Food Analysis / Q000295:instrumentation / Q000379:methods*; D013438:Sulfhydryl Compounds / Q000737:chemistry
D013438:Sulfhydryl Compounds; D002784:Cholesterol