Journal
ANALYTICA CHIMICA ACTA
Volume 1027, Issue -, Pages 1-8Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.aca.2018.04.053
Keywords
Riboflavin; Composite; Kefir; Sensor; pH
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Funding
- Department for the Economy Northern Ireland
- University of Central Lancashire Innovation and Enterprise
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Monitoring pH within microbial reactors has become an important requirement across a host of applications ranging from the production of functional foods (probiotics) to biofuel cell systems. An inexpensive and scalable composite sensor capable of monitoring the pH within the demanding environments posed by microbial reactors has been developed. A custom designed flavin derivative bearing an electropolymerisable phenol monomer was used to create a redox film sensitive to pH but free from the interferences that can impede conventional pH systems. The film was integrated within a composite carbon-fibre-polymer laminate and was shown to exhibit Nernstian behaviour (55 mV/pH) with minimal drift and robust enough to operate within batch reactors. (C) 2018 Elsevier B.V. All rights reserved.
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