食品科学 ›› 2020, Vol. 41 ›› Issue (18): 239-244.doi: 10.7506/spkx1002-6630-20191018-192

• 成分分析 • 上一篇    下一篇

离子色谱法测定食醋及其制品中有机酸的分析方法

纪凤娣,夏蓉,陶汇源,魏巍,穆晓婷,李东,鲁绯   

  1. (1.北京市营养源研究所,北京 100069;2.镇江恒顺生物工程有限公司,江苏?镇江 212000)
  • 出版日期:2020-09-25 发布日期:2020-09-18
  • 基金资助:
    2017年“金山英才”镇江制造2025领军人才计划项目;2018年江苏省重点研发专项(BE2018371)

Determination of Organic Acids in Vinegar and Related Products by Ion Chromatography

JI Fengdi, XIA Rong, TAO Huiyuan, WEI Wei, MU Xiaoting, LI Dong, LU Fei   

  1. (1. Beijing Institute of Nutritional Resources, Beijing 100069, China;2. Zhenjiang Hengshun Biological Engineering Co. Ltd., Zhenjiang 212000, China)
  • Online:2020-09-25 Published:2020-09-18

摘要: 建立测定食醋及其制品中14?种有机酸的离子色谱法。采用Dionex Ion Pac AS11-HC色谱柱和电导检测器,以流速为1.5?mL/min的KOH淋洗液进行梯度洗脱,乳酸、乙酸、丙酸、甲酸、丁酸、丙酮酸、异戊酸、戊酸、己二酸、丁二酸、酒石酸、酮戊二酸、草酸和柠檬酸可以在35?min内分离和定量。对优化后的分析方法在标准曲线线性、精密度、重复性、检出限和定量限等方面进行验证。本方法适用于不同食醋及其制品中有机酸的测定。

关键词: 有机酸;食醋;食醋制品;离子色谱法

Abstract: An ion chromatography method was developed for the determination of 14 organic acids in vinegar and related products by?conductivity detection. The chromatographic separation was performed on a Dionex Ion Pac AS11-HC column with gradient elution using KOH as the eluent at a flow rate of 1.5 mL/min. Lactic acid, acetic acid, propionic acid, formate, butyrate, pyruvate, iso-valproic acid, pentarate, adipate, succinic acid, tartrate, ketoglutarate, oxalic acid, and citric acid were separated and quantified in 35 min. The optimized method was validated with respect to linearity, precision, accuracy, and limits of detection and quantification. The applicability of the present method has been demonstrated for the determination of organic acids in different vinegar samples.

Key words: organic acids; vinegar; vinegar products; ion chromatography

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