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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
              同结构、不同构造或不同构型的UFA的生理效应都                                Disorders,2022,20(2):69-78.
              可能存在巨大差异。因此,对UFA进行深入解析                             [6]   KLOOS  D,LINGEMAN  H,MAYBORODA  O
              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,
              括了UFA的深入解析过程,并指出了部分衍生化方                                et al. Branched-chain fatty acids—an underexplored class
              法中的关键细节和优缺点。虽然现有质谱表征方法                                 of  dairy-derived  fatty  acids[J]. Nutrients,2020,12(9):
              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.
              PUFA时会出现多个双键的同时环氧化、UFA臭氧                               Towards  enantioselective  ultrahigh  performance  liquid
                                                                     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,
              新方法提出更高要求:在提高检测灵敏度的同时,还                                2022,34(3):484-497.
              需满足衍生化反应快速、高效、原位、生物兼容等要                            [9]   LIEBISCH G,VIZCAÍNO J A,KÖFELER H,et al.
              求,以实现各种基质样本的测试;衍生化产物更稳定;                               Shorthand notation for lipid structures derived from mass
                                                                     spectrometry[J]. Journal of Lipid Research,2013,54(6):
              所得谱图干净、重现性好,且可提供更深层次UFA
              解析信息;发展新式质谱联用技术等。质谱表征方                                 1523-1530.
                                                                 [10]  YADAV S,TIWARI V,SINGH M,et al. Comparative
              法的不断推陈出新和对现有表征技术进行优势整
                                                                     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。
                                                                     acid  to  attenuate  valproic  acid-induced  autism-like
              参考文献:                                                  features[J]. Journal  of  Physiology  and  Biochemistry,
                                                                     2017,73(2):187-198.
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