Nondestructive study of liquids in single fir seeds using nuclear magnetic resonance and magic angle sample spinning

Abstracts Magic angle sample spinning reduces line broadening which arises from differences in magnetic susceptibility. NMR spectra of liquid‐like components in single fir seeds are recorded with superior resolution and sensitivity, thus facilitating nondestructive determination of oil composition. The results also show thatcis‐5,cis‐9‐octadecadienoic, andcis‐5,cis‐9,cis‐12‐octadecatrienoic fatty acids are selectively esterified to the CH```2``‐O‐ group of the glycerol backbone.