Vitamin C as Reducing Agent

概述

Ascorbic acid (vitamin C) reduces iodine to iodide while being oxidized to dehydroascorbic acid. The enediol group on ascorbic acid is the active reducing center, losing two electrons. This reaction is the basis of the standard method for determining vitamin C content in foods.

参与者

日常示例

School science experiments often measure vitamin C in different juices by titrating with iodine solution until the starch indicator turns blue-black.

工业重要性

维生素C碘量法是药典规定的维生素C含量测定标准方法，也是食品工业控制维生素C添加量的重要质控手段。