A nuclear magnetic resonance (NMR) probe and spectrometer capable of investigating full intact wine bottles is described and used to study a series of Cabernet Sauvignons with high resolution 1 H NMR spectroscopy. Selected examples of full bottle 13 C NMR spectra are also provided. The application of this full bottle NMR method to the measurement of acetic acid content, the detection of complex sugars, phenols, and trace elements in wine is discussed.
The 23 Na nuclear magnetic resonance (NMR) spectra for NaCl dissolved in the nematic phase of dimyristoylphosphatidylcholine (DMPC)/dihexanoyl-phosphatidylcholine (DHPC) bicelle solutions at 34°C display line splittings consistent with the quadrupolar satellite transitions for the I ) 3 / 2 23 Na nucleus. At temperatures exceeding 40°C additional residual 23 Na satellite transition lines develop, suggesting that a new ordered phase similar to pure DMPC is present.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.