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In this present work, a highly reversible and sensitive amperometric biosensor, based on the immobilization of tyrosinase (Tyro) by calcium carbonate nano-materials (nano-CaCO 3 ), was applied for determination of food preservative, benzoic acid. The detection of benzoic acid was performed via its inhibiting action on the Tyro/nano-CaCO 3 modified glassy carbon electrode. The effects...
A novel sensitive and stable phenols amperometric biosensor, based on polyaniline–polyacrylonitrile composite matrix, was applied for determination of benzoic acid. The electrochemical biosensor functioning was based on the inhibition effect of benzoic acid on the biocatalytic activity of the polyphenol oxidase (PPO) to its substrate (catechol) in 0.1M phosphate buffer solution (pH 6.5). A potential...
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