Fatty acid analysis of castor tissues and purified lipid X.

Average peak-area percentages of fatty acid methyl ester derivatives are listed. The number of separate sample extractions and analyses are listed in brackets, except for lipid X, where the result from two GC injections of the purified fraction is shown.aItalicised entries are probable fatty acid designations, although the species did not exactly co-chromatograph with standards.bIndicates the identity of the molecular species is not known but likely wax or hydroxylated fatty acid derivatives from pollen protective layers.