ArticleScientific reports2026
Biocatalytic membrane for membrane inlet mass spectrometry.
Article in Scientific reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
The study presents a method for the immobilization of enzymes on a polydimethylsiloxane membrane probe for membrane inlet mass spectrometry. The method uses an eggshell membrane as a gas-permeable layer containing amino functional groups of lysine residues, which are capable of covalent linkage with enzyme molecules through glutaraldehyde. The membrane probe with immobilized enzymes enables determination of analyte concentrations that do not themselves diffuse through the membrane, provided the analyte participates in an enzymatic reaction that generates or consumes a diffusible substrate or product. This study uses glucose oxidase as a model enzyme and employs it to determine glucose concentrations in complex samples. Wine, fruit juice, milk and bovine blood plasma, as well as possible interferents and substrate analogs, were analyzed using this method and compared with a glucose oxidase amperometric biosensor. The linear response range of the sensor was 50 to 1000 µmol·L
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