Assignment of overlapping (1)H NMR signals in carp seminal plasma by proton-detected 2D C,H correlation spectroscopy

33S NMR cryogenic probe for taurine detection

With the goal of a (33)S nuclear magnetic resonance (NMR) probe applicable to in vivo NMR on taurine-biological samples, we have developed the (33)S NMR cryogenic probe, which is applicable to taurine solutions. The NMR sensitivity gain relative to a conventional broadband probe is as large as 3.5. This work suggests that improvements in the preamplifier could allow NMR measurements on 100 microM taurine solutions, which is the level of sensitivity necessary for biological samples.

Detection of taurine in biological tissues by (33)S NMR spectroscopy

The potential of (33)S NMR spectroscopy for biochemical investigations on taurine (2-aminoethanesulfonic acid) is explored. It is demonstrated that (33)S NMR spectroscopy allows the selective and unequivocal identification of taurine in biological samples. (33)S NMR spectra of homogenated and intact tissues are reported for the first time, together with the spectrum of a living mollusc. Emphasis is placed on the importance of choosing appropriate signal processing methods to improve the quality of the (33)S NMR spectra of biological tissues.