Optical Sensor Array Can Tell Syrups and Honeys Apart

  • Author: Chemistry – A European Journal
  • Published Date: 18 March 2018
  • Source / Publisher: Chemistry – A European Journal/Wiley-VCH
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA
thumbnail image: Optical Sensor Array Can Tell Syrups and Honeys Apart

Related Societies

The discrimination, control, and identification of complex analytes (beverages, foodstuffs, prescription drugs, etc.) are important for economic and health-related reasons. Because one cannot construct specific sensors for analytes such as honeys, wines, or whiskeys, alternative methods (such as hypothesis-free sensor arrays) are useful for such applications. When using nonspecific optical sensors, the formation of specific intensity patterns of fluorescence is observed, which allows the "fingerprinting" of complex analytes.

Uwe H. F. Bunz and colleagues, University of Heidelberg, Germany, have developed a cross-reactive sensor array by combining a two-component probe system, based upon three viologen-substituted boronic acids (BV) and an anionic charged poly(aryleneethynylene) (PAE), with additional simple PAEs.

The combined system can differentiate 27 different honeys in aqueous solution. The fluorescence turn-on array (BV+PAE) detects saccharide compositions. The PAEs experience fluorescence quenching and can discriminate trace colored components in the honeys. The developed array can also discriminate between glucose-fructose syrup and cheap sugar beet syrups from honeys. Even small amounts of added molasses could be detected.


Article Views: 2108

Sign in Area

Please sign in below

Additional Sign In options

Please note that to comment on an article you must be registered and logged in.
Registration is for free, you may already be registered to receive, e.g., the newsletter. When you register on this website, please ensure you view our terms and conditions. All comments are subject to moderation.

Article Comments - To add a comment please sign in

If you would like to reuse any content, in print or online, from ChemistryViews.org, please contact us first for permission. more

Follow on Facebook Follow on Twitter Follow on YouTube Follow on LinkedIn Follow on Instagram RSS Sign up for newsletters

Magazine of Chemistry Europe (16 European Chemical Societies) published by Wiley-VCH