Qualitative Analysis of Fatty Acid Composition of Marine Fish Oil by Characteristic Ions

被引：0
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作者：
Lou Q. [1 ,2 ]
Li L. [2 ]
Chen S. [2 ]
Yang W. [1 ]
Zhang J. [1 ]
Xue C. [3 ]
机构：
[1] School of Marine Science, Ningbo University, Ningbo, 315211, Zhejiang
[2] Key Laboratory of Aquatic Product Processing, Ministry of Agriculture South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou
[3] College of Food Science and Engineering, Ocean University of China, Qingdao, 266003, Shandong
来源：
Xue, Changhu (xuech@ouc.edu.cn) | 1600年 / Chinese Institute of Food Science and Technology卷 / 17期
关键词：
Characteristic ions; Fatty acids; Marine fish oil; Qualitative analysis;
D O I：
10.16429/j.1009-7848.2017.12.024
中图分类号：
学科分类号：
摘要：
Qualitative analysis of fatty acid composition of marine fish oil was studied by characteristic ions in this paper. Firstly, the degrees of unsaturation of fatty acids were determined quickly by base-peak ions, m/z 74 as saturated fatty acids, m/z 55 as monoene fatty acids, m/z 67 as diene fatty acids and m/z 79 as polyunsaturated fatty acids with three double-bonds or more, according to mass spectrometric fragmentation rules. Secondly, molecular weights and carbon chain lengths could be effectively identified by molecular ion (M+) and characteristics ions with fragment losses, such as[M-29]+, [M-31]+, [M-32]+, [M-43]+ and [M-74]+. Moreover, the double-bond positions of polyunsaturated fatty acids with three double-bonds or more were fast determined by ω ions and α ions. Twenty-four kinds of fatty acids were identified using characteristic ions from fish oil capsules, and the main fatty acids were C14:0, C16:0, C (18:1 n-9), C (20:5 n-3) and C (22:6 n-3), showing that characteristic ions could be applied to qualitative analysis of fatty acid composition of marine fish oil rapidly and accurately. Meanwhile, the total content of C (20:5 n-3) and C (22:6 n-3) was as high as 29.13%, showing that the marine fish oil had high nutritional values and health functions. © 2017, Editorial Office of Journal of CIFST. All right reserved.
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页码：193 / 200
页数：7
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