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Comparison of composition, thermal behaviour and polymorphism of pink guava (Psidium guajava) seed oil-palm stearin blends and lard


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 / Synopsis

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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Additional Metadata

Item Type: Article
Divisions: Halal Products Research Institute
Publisher: Faculty of Food Science and Technology, Universiti Putra Malaysia
Keywords: Guava seed oil; Lard substitute; Food lipids
Depositing User: Nabilah Mustapa
Date Deposited: 19 Mar 2018 06:45
Last Modified: 19 Mar 2018 06:45
URI: http://psasir.upm.edu.my/id/eprint/59699
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