Journal of Oil Palm Research Vol. 5 No. 1  1993 June p.  38-46

Identity characteristics of Malaysian palm oil products:fatty acid and triglyceride composition and solid fat content

Author(s): SIEW Wai Lin*;TANG Thin Sue* ;OH Flingoh C H* ;CHONG Chiew Let* ;TAN Yew Ai*

An earlier paper dealt with the identity characteristics of iodine value, slip melting point, cloud point, refractive index and apparent density of palm oil products. This paper concludes the work with a description of the fatty acid and triglyceride composition and the solid fat content of these products. The relationships between the contents of palmitic and oleic acids and between C48, C50 and C52 triglycerides were plotted graphically. A plot of palmitic acid versus oleic acid gave a linear relationship. Linearity was also observed in the plot of C52 versus C48. The graphs were useful for evaluation of palm oils contaminated with other oil products. The fatty acid composition of palm oil and palm stearin were generally similar to oils surveyed in 1980. Some differences were noted in the dioleopalmitin or the C52 triglycerides of palm oil which were lower in values in the present work. Similarly, triglycerides of the palm oleins reflected the lower iodine value of the oil. The present survey shows a slight compositional shift towards lower iodine values in palm oil and palm oleins while palm stearins remain widely variable in composition.

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* Palm Oil Research Institute of Malaysia, P O Box 10620, 50720 Kuala Lumpur

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