H-1-nuclear magnetic resonance analysis of the triacylglyceride composition of cold-pressed oil from camellia japonica
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Abstract
Camellia japonica (CJ) has oil-rich seeds, but the study of these oils has received little attention and has mainly focused only on their health properties. In the present work the relative composition of the fatty acid (FA) components of the triglycerides in cold-pressed oil from CJ is studied by 1 H-NMR. The results obtained were:
75.75%, 6.0%, 0.17% and 18.67%, for oleic, linoleic, linolenic and saturated FA respectively. Levels of C18 unsaturated FA found in CJ oil were similar to those reported for olive oils. We also checked the possibility of using 13C-NMR spectroscopy; however, the results confirmed the drawback of 13C over 1 H-NMR for the study of FA components of CJ triglycerides due to its low gyromagnetic ratio and its very low natural abundance.
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Salinero Corral, M.C., Feás Sánchez, X., Mansilla Vázquez, J.P., Seijas Vázquez, J.A., Vázquez Tato, M.P., Vela Fernández, P. et al. H-1-nuclear magnetic resonance analysis of the triacylglyceride composition of cold-pressed oil from camellia japonica. Molecules, vol. 17, 6716-6727
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https://doi.org/10.3390/molecules17066716Sponsors
XUNTA DE GALICIA for financial support: Grants INCITE09 262346PR and
PGIDIT06RAG26103PR. X.F. would also like to thank the Xunta de Galicia (Isidro Parga Pondal Program for young researchers, Grant No. IPP-020)
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© 2012 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/)