Seed proton NMR spin-grouping

Proton spin grouping in the rotating frame allows for a distinction between oil, water and starch protons with a resolution which exceeds the one with the standard proton T1 or T2 oil and water separation experiments. Hence, it has clear advantages in plant breeding programs in those situations where, because of the relatively high oil and water content, the standard NMR technique fails unless the seeds are dried artificially. This technique is just as fast as the standard technique.