Citation
Abdul Rahman, Noor Raihana and Marikkar, Mohammed Nazrim and Jaswir, Irwandi and Ahmad Fadzlillah, Nurrulhidayah and Mat Sahri, Miskandar
(2017)
Comparison of composition, thermal behaviour and polymorphism of pink guava (Psidium guajava) seed oil-palm stearin blends and lard.
International Food Research Journal, 24 (suppl.).
S348-S354.
ISSN 1985-4668; ESSN: 2231-7546
Abstract
A study was carried out to compare composition, thermal behavior, and polymorphic forms of palm stearin-pink guava seed oil blends with those of lard (LD). Four blends were prepared by mixing pink guava seed oil (PGO) with and palm stearin (PS) in different ratios: PGO-1, 40:60; PGO-2, 45:55; PGO-3, 50:50; PGO-4; 55:45. The blends and lard were compared in terms of their basic physicochemical parameters, fatty acid and triacylglycerol (TAG) compositions, melting, solidification and polymorphic properties. Results showed that PGO-2 and LD were found to display similarities in terms of slip melting point value and the peak maximum of the high-melting thermal transition. In the solid fat content (SFC) profile, PGO-2 and LD were found to display the least difference. In the X-ray diffraction analysis, PGO-2 displayed both β and β’ polymorphs that were similar to the polymorphic form of LD.
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