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F 2 ‐selective two‐dimensional NMR spectroscopy for the analysis of minor components in foods
Author(s) -
Koda Masanori,
Furihata Kazuo,
Wei Feifei,
Miyakawa Takuya,
Tanokura Masaru
Publication year - 2011
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/mrc.2813
Subject(s) - chemistry , nuclear magnetic resonance spectroscopy , spectroscopy , two dimensional nuclear magnetic resonance spectroscopy , minor (academic) , nmr spectra database , spectral line , analytical chemistry (journal) , stereochemistry , chromatography , physics , quantum mechanics , astronomy , political science , law
In this study, we propose F 2 ‐selective 2D NMR spectroscopy as an effective method to obtain high‐quality spectra of minor components in complex foodstuffs. Selective excitation along the F 2 axis overcame the problems occurring in the conventional F 1 ‐selective 2D NMR spectroscopy. The technique was successfully applied to mango juice to provide high‐quality TOCSY, DQF‐COSY, and NOESY spectra of the minor components for the assignment of their signals. In addition, high‐quality TOCSY spectra were obtained for the minor components of Japanese sake and honey. These results indicate that F 2 ‐selective 2D NMR spectroscopy will be useful for the non‐destructive analysis of various foods. Copyright © 2011 John Wiley & Sons, Ltd.