Determination of N-epsilon-Carboxymethyl-lysine Content in Muscle Tissues of Turbot by Gas Chromatography-Mass Spectrometry
文献类型: 外文期刊
第一作者: Wang Jing
作者: Wang Jing;Tian Sheng-Lan;Lin Hong;Li Zhen-Xing;Sun Wei-Hong
作者机构:
关键词: N-epsilon-Carboxymethyl-lysine;Fishery products;Gas chromatography-mass spectrometry;Derivatization
期刊名称:CHINESE JOURNAL OF ANALYTICAL CHEMISTRY ( 影响因子:1.134; 五年影响因子:0.909 )
ISSN: 0253-3820
年卷期: 2015 年 43 卷 8 期
页码:
收录情况: SCI
摘要: A method was developed to determine the N-epsilon-carboxymethyl-lysine content in the muscle tissues of turbot using gas chromatography-mass spectrometric method. Turbot was selected as the research object, and homogenized muscle tissue samples of turbot defatted by chloroform/acetone were pretreated followed by reduction, acid hydrolysis, purifying and derivatization (esterification and acylation). The ion of m/z 392 was selected as a quantitative ion, and the ions of m/z 392, 365, 333, and 305 were selected as qualitative ions in the selected ion monitoring mode. The range of the linear calibration curve of the N-epsilon-carboxymethyl-lysine derivative peak area and concentration extended from 1 to 200 mu g L-1. The limit of detection was 1 mg kg(-1), and the limit of quantification was 5 mg kg(-1). The average recoveries ranged from 100% to 104% at 10, 150 and 350 mg kg(-1) spiked levels, and the relative standard deviation was within 5% (n = 5).
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