Exploring Phylogenetic Relationships between Hundreds of Plant Fatty Acids Synthesized by Thousands of Plants.
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Seed oils from orange (Citrus aurantium L.), grapefuit (Citrus decumana, var. Mur), lemon (Citrus medica L. var. Eureka) and tangerine (Citrus delicioa, var. Swigle) of Vietnamese origin are investigated. The fatty acids in the oils are determined by gas liquid chromatography. The composition of triglyceride groups differing in unsaturation is established by argentation TLC and densitometry. The citrus oils are found to consist of 16 triglyceride groups, linoleic acid being present in 7 of them. The main groups in orange, grapefuit and lemon seed oils are MDD, SMD, SD2 and S2D whereas in tangerine seed oil M2D and SM2 groups (S, saturated fatty acid; M, monoenoic, D, dienoic and T, trienoic acids) in a concentration close to 10% are found instead of SD2.