UNIVERSIDAD DE BURGOS

Direct “in situ” determination of ascorbic acid (Vitamin C) using a device formed by three disposable screen-printed electrodes

Posted by UNIVERSIDAD DE BURGOSResponsive · Innovative Products and Technologies · Spain

Summary of the technology

New device for direct “in situ” detection of ascorbic acid in different types of liquid samples, for example biological samples or food products.
The equipment consists of an electrode system formed by three disposable electrodes, obtained by silkscreen printing.

UNIVERSIDAD DE BURGOS

Description of the technology

New and innovative aspects

Commonly employed methods present some disadvantages such as a poor selectivity and a progressive deterioration of the sensitivity of the electrode when used in complex matrices.

This new device solves these disadvantages by employing disposable electrodes that allow the determination of ascorbic acid with greater sensitivity in different types of samples, for example in biological and food samples.

Main advantages of its use

This low cost electrochemical method, applied to chemical analysis, simplifies the commonly applied techniques, can be performed by non-qualified personnel, with a short analysis time, allowing “in situ” detection of the analyte.

Specifications

The analysis is based on the oxidation of ascorbic acid into dehydroascorbic acid.

The device developed is of an electrode nature, characterized by comprising three disposable electrodes: one working electrode, one auxiliary or counter electrode, and one reference electrode. Each one includes a contact or terminal, a section and an active area. All electrodes have been manufactured by silkscreen printing with conductive material ink on a plastic polyester (PET) sheet. Each electrode has a specific shape, to be adapted easily to their respective functions.

The terminals and sections have been printed with an Ag-based ink. The active surfaces of the counter electrode and working electrode have been printed with a conductive ink of C, and the active surface of the reference electrode has been printed with an Ag/AgCl ink. At the same time, the active area of ​​the working electrode is modified with gold nanoparticles.

Applications

It presents a high responsiveness in sectors such as health, food and beverages.

Intellectual property status

Protected by patent P201631238.

Current development status

Currently, the device is in prototype phase, validated in laboratory

Desired business relationship

Commercial agreement; License agreement; Technical cooperation: further development; Technical cooperation: testing new applications; Technical cooperation: adaptation to specific needs

Additional information (attached documents)

Related keywords

  • Electronics, IT and Telecomms
  • Biological Sciences
  • Agrofood Industry
  • Measurements and Standards
  • Medical Health related
  • Consumer related
  • Industrial Products
  • Other
  • detection
  • disposable
  • analysis
  • electrochemistry
  • electrode
  • Vitamin C
  • Ascorbic acid
  • screen-printed

About UNIVERSIDAD DE BURGOS

Technology Transfer Office from Spain

The aim of the The Technology Transfer Office (TTO) of the Univesidad de Burgos is to promote Innovation technology through the reseach results transfer and the conexions between the University and the new needs and requirements of the society - we are the link between the University and the Industry. Contact person: José Manuel López (jmllopez@ubu.es)



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