A13C‐NMR study of the crystal polymorphism and internal mobilities of the triglycerides, tripalmitin and tristearin

The combined NMR technique of cross‐polarization, high power decoupling and magic angle spinning (CP/MAS) has been used in the study of the polymorphic forms of the two triglycerides, tripalmitin and tristearin. Variations in the13C chemical shift values for the different polymorphic forms have been found and used to obtain molecular information, and to distinguish between chain orientations. Information on the relative mobilities of particular regions within the molecule for the different polymorphs also is presented.