A sustainable amperometric biosensor for the analysis of ascorbic, benzoic, gallic and kojic acids through catechol detection. Innovation and signal processing

Search: L773:0003 2654 > A sustainable amper...

Casanova, AnaUniv Murcia, Fac Chem, Dept Analyt Chem, E-30100 Murcia, Spain.;CNRS, CEMHTI, F-95071 Orleans, France. (author)

QC 20211129
In this work, we present a new catechol amperometric biosensor fabricated on the basis of naturally available enzymes in common mushrooms. The biosensor response mechanism comprises the reduction of the quinone exclusively produced in the oxidation of the catechol present in the sample, which is catalyzed by tyrosinase enzyme. The new catechol biosensor has demonstrated excellent analytical performance at increasing catechol concentrations in the sample solution, which includes superior reproducibility for several electrodes and long-term stability. On top of that, the biosensing element used in the fabrication is a sustainable material, of low-cost and presents an excellent lifetime of years. Whether the catechol biosensor is operating in the presence of a compound influencing the reactions underlying the amperometric response (such as ascorbic, benzoic, gallic and kojic acids), this serves as an analytical platform to detect these compounds in real samples. Particularly, we introduce herein for the first time different treatments to process the current signal of the biosensor pursuing the linearity needed for the analytical application in real samples. In this sense, the catechol biosensor has been successfully applied to the detection of benzoic, gallic and kojic acids in juices, teas and cosmetic products, respectively.

Cuartero, MariaKTH,Tillämpad fysikalisk kemi(Swepub:kth)u1lfp38j (author)
Alacid, YolandaUniv Murcia, Fac Chem, Dept Analyt Chem, E-30100 Murcia, Spain. (author)
Almagro, Carmen M.Univ Murcia, Fac Chem, Dept Analyt Chem, E-30100 Murcia, Spain. (author)
Garcia-Canovas, FranciscoUniv Murcia, Fac Biol, Dept Biochem & Mol Biol A, E-30100 Murcia, Spain. (author)
Garcia, Maria S.Univ Murcia, Fac Chem, Dept Analyt Chem, E-30100 Murcia, Spain. (author)
Ortuno, Joaquin A.Univ Murcia, Fac Chem, Dept Analyt Chem, E-30100 Murcia, Spain. (author)
Univ Murcia, Fac Chem, Dept Analyt Chem, E-30100 Murcia, Spain.;CNRS, CEMHTI, F-95071 Orleans, France.Tillämpad fysikalisk kemi (creator_code:org_t)

In:The Analyst: Royal Society of Chemistry (RSC)145:10, s. 3645-36550003-26541364-5528

By the author/editor: Casanova, Ana; Cuartero, Maria; Alacid, Yolanda; Almagro, Carmen ...; Garcia-Canovas, ...; Garcia, Maria S.; show more...; Ortuno, Joaquin ...; show less...

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