Printed electrochemical biosensors acts as a rapid and cost effective detection of various analytes in environmental, biomedical and food technology. This study presents the development and evaluation of printed biosensors for lactate and lactic acid detection for three different substrates, polyethylene terephthalate(PET), cellulose acetate(CA), Regenerated cellulose acetate. Graphene has been proven to have good electrical conductivity and high chemical stability which enables us to exploit these properties of graphene to use water based graphene ink which is ideal to print graphene electrodes. The devices were printed using ink-jet printing techniques followed by post processing and enzyme immobilization. The electrochemical characterisation processes were done using cyclic voltammetry and chronoamperometry. The study focuses on testing devices printed on different substrates and examining the sensitivity and linearity of the sensors followed by laying the foundation for sustainable production of these devices with regenerative cellulose acetate.
Vaishnav Dinesh (Wed,) studied this question.