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覃 勇,等:不饱和脂肪酸结构表征的质谱分析方法的研究进展
未来发展方向。 myristic acid∶docosahexaenoic acid ratio versus the
n-6 polyunsaturated fatty acid∶n-3 polyunsaturated
2 总结
fatty acid ratio as nonalcoholic fatty liver disease
UFA在生物体内广泛存在,不同结构,甚至相 biomarkers[J]. Metabolic Syndrome and Related
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有利于发现生物标志物和阐释疾病机制。本工作从 A,et al. Analysis of biologically-active,endogenous
carboxylic acids based on chromatography-mass
UFA的结构鉴定和精细解析两方面出发,对UFA
spectrometry[J]. TrAC Trends in Analytical Chemistry,
质谱表征方法进行了归纳总结,主要从脂肪碳链解
2014,61:17-28.
析、双键位置解析、顺反异构解析等3个途径系统概 [7] TAORMINA V M,UNGER A L,SCHIKSNIS M R,
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具有诸多优势,但其局限性也较为明显,如P-B衍生 2875.
化反应解析PUFA时副反应较多、环氧化反应解析 [8] GEIBEL C,ZHANG L,SERAFIMOV K,et al.
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chromatography-mass spectrometry-based metabolomics
解产物不稳定、UFA电荷远程裂解存在大量非选择
of branched-chain fatty acids and anteiso-fatty acids under
性断裂等。此外,UFA顺反异构体解析目前仍存在
reversed-phase conditions using sub-2-μm amylose- and
巨大挑战。这些存在的问题均对UFA的质谱表征 cellulose-derived chiral stationary phases[J]. Chirality,
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所得谱图干净、重现性好,且可提供更深层次UFA
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efficacy of alpha-linolenic acid and gamma-linolenic
合,可为UFA结构表征新方法的开发指明方向。
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