Other

Cranfield University

Anthony Peter Turner

Steven John Setford

Geoffrey Frank Hall

Stephen A White

Phillip Warner

Ibtisam Tothill

David J Best

Sarah Stephens

Selwayan Saini

Jennifer Hall

Jennifer Maeve Hall

Susan Alcock

Manus Joseph Dennison

Jon Dicks

Biochemical sensor and novel media for bioelectrochemical reactions

A backing sheet (101) is provided with a pattern of pathways (131,132,133) of (e.g.) silica or cellulose by a printing process (e.g., screen printing). There may be multiple pathways leading from an eluant application region (117) to a detection zone (116) and thence to a waste reservoir (118). Different pathways may have different fluid traversal times because they differ in length and/or material (e.g., nitrocellulose for slow traversal and fibrous cellulose for rapid traversal by an aqueous liquid). Thus analyte and reagents deposited at depots (112,113) on different pathways are sequentially delivered to the detection zone. Reagents may be applied by printing. The detection zone may have an electrode assembly (105), also applied by printing, for detecting the effects of analyte.

Printed fluid transport devices

A method of determining an analyte in the gaseous or vapour phase and in which a bioreceptor or biomimic is retained at an electrode. The bioreceptor or biomimic is preferably retained at a support at the electrode which comprises a solid or gel matrix of an electrolyte, especially organic salt electrolytes. Electrochemical detection of analytes in this way has several advantages over existing methods which rely on solution monitoring. For example gas sensors can be prepared for monitoring an analyte by the occurrence of a reaction with a bioreceptor or biomimic, in addition to monitoring the presence of toxins due to inhibition of the bioreceptor or biomimic reaction. Furthermore, the invention enables gas or vapour analyte monitoring with increased sensitivity and speed and greater stability of the sensors can be achieved. The invention also relates to novel media for carrying out bioelectrochemical reactions.

Monitoring bioelectrochemical reactions and novel media for

An enzyme electrode for use in organic solvents

Growing community of inventors

Bedfordshire, United Kingdom

Anthony Peter Turner