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Citation: LIN Li, LI Renyong, WANG Linlin, QIU Yun. Determination of choline, putrescine and cadaverine in boletus by ion chromatography with suppressed conductivity detection[J]. Chinese Journal of Chromatography, ;2018, 36(11): 1189-1193. doi: 10.3724/SP.J.1123.2018.06027 shu

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

LIN Li ^1, ,
LI Renyong ² ,
WANG Linlin ¹ ,
QIU Yun 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 Date: 27 June 2018

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

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.
- ion chromatography (IC),
- choline,
- putrescine,
- cadaverine,
- boletus
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