Determination of ascorbyl 6-palmitate in food matrices by amperometric flow injection analysis

Abstract

In this paper a rapid method based on a FIA (flow injection analysis) system with amperometric detection for the evaluation of ascorbyl 6-palmitate in foods is described. The selectivity of the proposed method is related to the low anodic potential applied to the working glassy carbon electrode (+0.1 V vs. Ag/AgCl) that leaves out interferences from ascorbic acid and phenolic compounds. By flow injection analysis, under optimised conditions, the calibration curve was linear in the range 0–20 mg l⁻¹ and the detection limit was 0.2 mg l⁻¹.