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Determination of Volatile Alcohols in Fruit and Vegetable Juices by an Amperometric Enzyme Electrode Measuring in the Headspace above the Liquid

Title data

Schlangen, Claudia ; Hämmerle, Martin ; Hilgert, Karin ; Moos, Ralf:
Determination of Volatile Alcohols in Fruit and Vegetable Juices by an Amperometric Enzyme Electrode Measuring in the Headspace above the Liquid.
In: 14th International Meeting on Chemical Sensors. - Wunstorf : AMA Verband für Sensorik und Messtechnik e.V. , 2012 . - pp. 1397-1398
ISBN 978-3-9813484-2-2
DOI: https://doi.org/10.5162/IMCS2012/P2.1.23

Official URL: Volltext

Abstract in another language

The determination of alcohol is relevant to the beverage industry, apparently for liquors, wines, or beers. However, alcohol can also be found in juices e.g. due to starting fermentation during storage of the fruits. We present an amperometric enzyme electrode that determines volatile alcohols (ethanol, methanol) in fruit and vegetable juices (apple, grape, currant, tomato). The biosensor analyses the headspace above the liquid sample. This mode of operation has the advantage that possible interferences are limited to volatile substances and that the biosensor is not contaminated by the sample. For example, no interference by ascorbic acid (vitamin C) can occur. The analysis results of the biosensor are compared to two reference methods, a commercial photometric enzyme test-kit and a HPLC analysis.

Further data

Item Type: Article in a book
Refereed: Yes
Institutions of the University: Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Functional Materials > Chair Functional Materials - Univ.-Prof. Dr.-Ing. Ralf Moos
Faculties
Faculties > Faculty of Engineering Science > Chair Functional Materials
Profile Fields > Advanced Fields > Advanced Materials
Research Institutions > Research Centres > Bayreuth Center for Material Science and Engineering - BayMAT
Profile Fields
Profile Fields > Advanced Fields
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 20 Apr 2015 09:52
Last Modified: 13 Nov 2015 10:15
URI: https://eref.uni-bayreuth.de/id/eprint/10480