A proton NMR relaxation study of hen egg quality

A quantitative analysis of NMR proton relaxation in hen egg albumen and yolk is undertaken to research the causes of quality loss during the first few days of storage and to access the feasibility of an on-line NMR sensor of internal egg quality. It is shown that the change in the transverse relaxat...

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Veröffentlicht in:	Magnetic resonance imaging 2005-04, Vol.23 (3), p.501-510
Hauptverfasser:	Laghi, Luca, Cremonini, Mauro A., Placucci, Giuseppe, Sykora, Stanislav, Wright, Kevin, Hills, Brian
Format:	Artikel
Sprache:	eng
Schlagworte:	Animals Chickens Egg Yolk - chemistry Egg's quality Female Low-resolution NMR Magnetic Resonance Spectroscopy - methods Model-free analysis NMRD Ovalbumin - chemistry Protons Quality Control
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Beschreibung
Zusammenfassung:	A quantitative analysis of NMR proton relaxation in hen egg albumen and yolk is undertaken to research the causes of quality loss during the first few days of storage and to access the feasibility of an on-line NMR sensor of internal egg quality. It is shown that the change in the transverse relaxation in thick egg albumen mainly results from an increase in proton exchange rate resulting from a pH increase attributed to loss of carbon dioxide by diffusion through the eggshell. The results suggest that the low-field T 1 is the best relaxation time indicator of albumen quality.
ISSN:	0730-725X 1873-5894
DOI:	10.1016/j.mri.2004.12.003