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Updated: May 29, 2026

Bridging the Bio-Electronic Interface with Biofabrication
Published on: June 6, 2012
Structural and functional characterisation of a biohybrid material based on acetylcholinesterase and layered double
S Hidouri1, Z M Baccar, H Abdelmelek
1LMU, National Institute of Research and Physical and Chemical Analysis (INRAP), 2020 Sidi Thabet, Tunisia.
Abstract:
This work describes the use of layered double hydroxides (LDHs) for the immobilisation of acetylcholinesterase (AChE) on insulator/semiconductor solid supports. Different LDHs have been synthesised by a co-precipitation method. Afterwards, biohybrid materials based on AChE-LDH mixtures have been produced using wild and recombinant enzymes. Spectroscopic techniques have confirmed the LDH phase identity and the links created between the LDH and AChE. Spectrophotometric assays have demonstrated that most of the biohybrid materials are functional and stable. Several configurations have been used for AChE immobilisation. The highest catalytic responses have been observed when using wild enzyme and immobilising AChE-LDH mixtures on LDHs previously deposited on the solid supports. LDHs have been demonstrated to be suitable host matrices for AChE immobilisation on electrodes for the subsequent development of electrochemical biosensors.
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