通过安培流动注射分析法测定食品基质中的抗坏血酸6-棕榈酸酯。

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

作者信息

Buratti S, Cosio M S, Benedetti S, Mannino S

机构信息

Dipartimento di Scienze e Tecnologie Alimentari e Microbiologiche, Università degli Studi di Milano, Italy.

出版信息

Analyst. 2001 Aug;126(8):1466-8. doi: 10.1039/b103192a.

DOI:10.1039/b103192a

PMID:11534628

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).

摘要

本文描述了一种基于流动注射分析（FIA）系统并采用安培检测法来评估食品中抗坏血酸6-棕榈酸酯的快速方法。所提出方法的选择性与施加于工作玻碳电极上的低阳极电位（相对于Ag/AgCl为+0.1 V）有关，该电位排除了来自抗坏血酸和酚类化合物的干扰。通过流动注射分析，在优化条件下，校准曲线在0 - 20 mg l⁻¹范围内呈线性，检测限为0.2 mg l⁻¹。