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KMID : 0380619910230010068
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Korean Journal of Food Science and Technology
1991 Volume.23 No. 1 p.68 ~ p.75
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Presence of cis - 11 , 12 - Methylene Octadecanoic Acid in the Oils of Ternstroemia gymnanthera
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Abstract
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The seed oil of Ternstroeneia gyrnnanthera. a species of the Ternstroemiaceae, is mainly composed of triglyceride(92.4%), followed by polar lipids(5.9%), sterol(1.2%) and pigments(0.5%). This oil contains 4.8% of cis-11, 12-methylene octadecanoic acid(lactobacillic acid) in the fatty acid composition of the total oil. This identification is based on information from non-urea inclusion formation, silver nitrate impregnated silica gel column and gas liquid chromatography, ^(1)H-& ^(13)C-nuclear magnetic resonance and mass spectroscopy. Smaller amounts(0.1c) of presumptive 9, 10-methylene hexadecanoic acid(dihydro malvalic acid) is also detected. The major fatty acids in this oil are C18 : 1(36.1%), C18: 2(30.9%), C16: 0(15.1%), C16: 1(7.6%) and C18: 0(3.4%).
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KEYWORD
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