Study on a nano-porous gold/polyamidoamine (NPG/PAMAM)-based electrochemical aptamer biosensor for the detection of ochratoxin a in the red wine

• Published in: Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment Vol. 40; no. 8; pp. 1059 - 1073
• Main Authors: Wensi, Zhang, Chuanjin, Cui, Chen, Hongshuo, Xuechao, Zhang, Junhui, Du
• Format: Journal Article
• Language: English
• Published: England Taylor & Francis 03.08.2023; Taylor & Francis Ltd
• Subjects: alloys; aptamer; Aptamers; biosensor; Biosensors; Bonding agents; carbon; condensation reactions; Copper; Covalent bonds; cross-linking reagents; Crosslinking; Dehydration; detection limit; Electrochemical analysis; Electrochemistry; Glutaraldehyde; Gold; Gold base alloys; Immobilization; Infrared spectroscopy; nano-porous gold; Ochratoxin A; oligonucleotides; PAMAM; red wines; Sensors; Wine; biosensor; aptamer; Ochratoxin A; PAMAM; nano-porous gold

In this study, a novel electrochemical aptamer sensor for detecting ochratoxin A (OTA) was constructed. First, a gold-copper alloy film was prepared via electrochemical deposition, and copper was selectively dissolved in constant potential mode for obtaining the nano-porous gold modified screen-prin...