Vibrational structure of the polyunsaturated fatty acids eicosapentaenoic acid and arachidonic acid studied by infrared spectroscopy
Vibrational structure of the polyunsaturated fatty acids eicosapentaenoic acid and arachidonic acid studied by infrared spectroscopy
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DOI：
10.1016/j.molstruc.2009.11.052
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发表时间：
2010-02-25
影响因子：
3.8
通讯作者：
Leipertz, Alfred
中科院分区：
文献类型：
--
作者：
Kiefer, Johannes;Noack, Kristina;Leipertz, Alfred
对两种结构相似的多不饱和C-20脂肪酸（PUFAs） 5,8,11,14,17-二十碳五烯酸和5,8,11,14-二十碳四烯酸（花生四烯酸）进行了光谱鉴别。为此，利用衰减全反射（ATR）傅里叶变换红外光谱（FT-IR）研究了它们的振动结构。记录的光谱指纹区几乎相同，而3000 cm（-1）附近的C-H拉伸模式区由于饱和程度的不同而导致电子和分子结构的改变，从而可以明显区分两种脂肪酸。(C) 2009 Elsevier B.V.版权所有
The spectroscopic discrimination of the two structurally similar polyunsaturated C-20 fatty acids (PUFAs) 5,8,11,14,17-eicosapentaenoic acid and 5,8,11,14-eicosatetraenoic acid (arachidonic acid) is shown. For this purpose their vibrational structures are studied by means of attenuated total reflection (ATR) Fourier-transform infrared (FT-IR) spectroscopy. The fingerprint regions of the recorded spectra are found to be almost identical, while the C-H stretching mode regions around 3000 cm(-1) show such significant differences as results of electronic and molecular structure alterations based on the different degree of Saturation that both fatty acids can be clearly distinguished from each other. (C) 2009 Elsevier B.V. All rights reserved.