Journal of Oil Palm Research Vol. 12 No. 1, June 2000, p. 1-7
DIFFERENTIAL SCANNING THERMOGRAMS OF PALM OIL TRIGLYCERIDES IN THE PRESENCE OF DIGLYCERIDES
The melting and crystallization behaviour of palm oil triglycerides was characterized by differential scanning calorimetry (DSC). The influence that diglycerides have on the melting and cooling behaviour of palm oil is dependent on the concentration and nature of diglycerides. All the diglycerides (PP,PO and OO) and the palm diglyceride mixture (PDG) depressed the melting point of the oil. The 1,2 isomer was more effective than the 1,3 isomer. An excess of 1,3 PP elevated the melting point. The crystallization behaviour is complicated if 1,3 PP is present in high concentrations. All the diglycerides studied can undergo co-crystallization with palm triglycerides, except for 1,3 PP at high concentration.KEYWORDS:
*Malaysian Palm Oil Board,
P.O. Box 10620, 50720 Kuala Lumpur. Malaysia.
**15. Hujan Bubuk, Overseas Union Garden,
58200 Kuala Lumpur, Malaysia.