Dual-signal photoelectrochemical/square wave voltammetric biosensor for simultaneous detection of β-lactoglobulin and Ara h1

Key Points

• Simultaneous detection of β-lactoglobulin and Ara h1 was achieved with a high sensitivity.
• The biosensor exhibited a limit of detection of 0.5 ng/mL for both targets.
• Analysis involved a dual-signal photoelectrochemical and square wave voltammetric approach.
• Innovative techniques may enhance food safety, supporting better allergen detection.