Scientists in Germany have designed a simple polymer that can be used in a sensor to distinguish between similar fruit juices.
Sensors that analyse food, drink and drugs are important for quality control and preventing fraud. Chemo-optical sensors, or tongues, already exist for testing wine, coffee, whiskey and other beverages. Due to the complex nature of these samples, the tongues comprise a number of sensors, which undergo structural changes to provide a colour or fluorescence pattern in the presence of various analytes. Chemometric techniques then analyse the pattern, reporting the distinct ‘taste’ for each product.
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This paper is free to access until 5th April, 2017:
Poly(p-phenyleneethynylene)-based tongues discriminate fruit juices
Jinsong Han, Benhua Wang, Markus Bender, Kai Seehafera and Uwe H.F. Bunz
Analyst, 2017,142, 537-543
DOI: 10.1039/C6AN02387H
