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Updated: May 11, 2026

NMR Spectroscopy as a Robust Tool for the Rapid Evaluation of the Lipid Profile of Fish Oil Supplements
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通过C qNMR和HPLC-CAD对Arctium lappa L.叶子中的脂肪酸进行量化

Weijie Shang1,2, Yanjie Huang3,4, Yihang Zhang1,2

  • 1Henan University of Chinese Medicine, Collaborative Innovation Center of Research and Development on the Whole Industry Chain of Yu-Yao.

Journal of oleo science
|August 31, 2025
PubMed
概括

传统上用于中风的叶含有丰富的脂肪酸. 一种新的13C核磁共振方法量化了鱼中的总脂肪酸及其结构,有助于研究中风治疗.

关键词:
13C qNMR 其他的叶子内容的确定脂肪酸在HPLC-CAD中

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相关概念视频

NMR and Mass Spectroscopy of Carboxylic Acids01:30

NMR and Mass Spectroscopy of Carboxylic Acids

In ¹H NMR spectroscopy, acidic protons (–COOH) of carboxylic acids are highly deshielded and absorb far downfield, at around 9–12 ppm. The chemical shift value depends on the concentration and solvent used.
While α protons of carboxylic acids absorb at 2–2.5 ppm, β protons absorb further upfield.
Carboxylic acids are easily identified by dissolving them in deuterium oxide, which results in a rapid exchange of the acidic protons with deuterium. This leads to the disappearance of the acidic...