Chinese Journal of Chromatography ›› 2018, Vol. 36 ›› Issue (11): 1189-1193.DOI: 10.3724/SP.J.1123.2018.06027

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Determination of choline, putrescine and cadaverine in boletus by ion chromatography with suppressed conductivity detection

LIN Li1, LI Renyong2, WANG Linlin1, QIU Yun1   

  1. 1. China National Food and Safety Supervision and Inspection Center, Beijing 100094, China;
    2. Zhongke PUYAN(Beijing) Science and Technology Co., Ltd., Beijing 100027, China
  • Received:2018-06-27 Online:2018-11-08 Published:2014-09-30
  • Supported by:

    2017 National Standards for Food Safety Drawing and Revising Program (No. Spaq-2017-060).

Abstract:

A chromatographic method was developed for the determination of choline, putrescine and cadaverine in boletus by cation exchange chromatography with suppressed conductivity detection. Samples were extracted with 7 mmol/L methanesulfonic acid solution, then filtered through a membrane, and purified by a reversed phase solid phase extraction column. Choline, putrescine, cadaverine and coexisting ions in the samples were separated well on the IonPac CS17 cation exchange column (250 mm×4 mm). The mobile phase was 7 mmol/L methanesulfonic acid solution. All analytes could be eluted from the column in 25 min. The limits of detection (S/N=3) of choline, putrescine and cadaverine were 0.002, 0.002 and 0.003 mg/L, respectively. Moreover, they all had wide linearity ranges (0.01-10 mg/L) and satisfactory recoveries (91.6%-100.2%). This method is suitable for the determination of choline, putrescine and cadaverine in boletus, and has good separation performance, high selectivity and sensitivity.

Key words: boletus, cadaverine, choline, ion chromatography (IC), putrescine

CLC Number: