Synchronously activated strontium aluminate nanoflakes anchored functionalized carbon nanofiber nanocomposite for sensitive amperometric detection of food additive: Propyl gallate

The contemporary dietary pattern is ruined by taste enhancers, flavoring agents, and preservatives. Propyl gallate (PG) is an imperative phenolic antioxidant cast-off to inhibit the oxidative mutilation in foodstuffs thereby preventing rancidity. Determination and annihilation of PG are extensively concerned because of its probable lethal effects on human well-being. Herein, we report an electrochemical sensor using SrAl2O4/f-CNF nanocomposite as an efficient electrode modifier with peculiar synergistic quantum confinement effects supporting the formation of heterojunction to facilitate electron transportation between its counterparts. The structural, morphological, and crystalline features of SrAl2O4/f-CNF nanocomposite was thoroughly examined. The proposed sensor possesses a wide linear range (0.1-1104.75 µM) with a remarkably low limit of detection (0.075 µM) and sensitivity (1.142 µA⋅µM-1⋅cm-2) measured at 0.2 V (vs. Ag/AgCl). The reliability of this sensor was evidenced through real-time monitoring of PG in edible oil which is beneficial for food quality monitoring and dropping the danger of abuse of PG in foods.