RESEARCH ARTICLE

Journal of Oil Palm Research Vol. 24 (2) August 2012, p. 1349-1352

PHYSICO-CHEMICAL PROPERTIES AND COMPATIBILITY STUDY ON PALM OIL PRODUCTS WITH COCOA BUTTER

ZALIHA Omar* ; NORIZAH, A. R. * ; MOHAMED HANAFI Musa ** ; AMINUDIN Hussein **

ABSTRACT

The physico-chemical properties of binary blends of palm oil products with deodorised cocoa butter (DCB, IV 32.7) at levels ranging from 10% to 90% (w/w) were evaluated. Cocoa butter equivalent (CBE, IV 32.4) showed full compatibility with DCB at all concentrations and crystallised to form a strong β in a mixture of β + β’ polymorphic forms. Results of solid fat content (SFC) show that the addition of 10% to 20% palm-mid fraction (PMF, IV 41) and cocoa butter substitute (CBS, IV 0.3) with DCB gave rise to eutectic effects and that the mixture crystallised to form a strong β’ in a mixture of β + β’ polymorphic forms. The differential scanning calorimetry (DSC) melting thermograms of the CBE and DCB blends showed a single melting peak at ± 19.5°C. There were two prominent melting peaks observed in the blends containing more than 10% to 20% of CBS and PMF.

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* Malaysian Palm Oil Board,
P. O. Box 10620, 50720 Kuala Lumpur, Malaysia.
E-mail: zaliha@mpob.gov.my

** Faculty of Applied Sciences,
Universiti Teknologi MARA,
40450 Shah Alam, Selangor, Malaysia.