Melting behaviour of binary mixtures of palm mid fraction and rice bran oil

Saadah Mastura Saidin, Nazaruddin Ramli

    Research output: Contribution to journalArticle

    6 Citations (Scopus)

    Abstract

    The melting and crystallization profile of cocoa butter substitute (CBS) formulation consisting of oil blends between palm mid fraction (PMF) and rice bran oil (RBO) were measured through solid fat content using pulsed Nuclear Magnetic Resonance (pNMR) Bruker Minispe. The isothermal melting and crystallization behaviour were determined via Differential Scanning Calorimeter (DSC). The formulations were developed through binary mixture of palm mid fraction and rice bran oil with different ratios created using Mixture Design, Design Expert version 6.0. Selected formulations had been studied for compositional modification through immobilized lipase catalyzed by interesterification using Novozyme® 435. Three selected parameters such as temperature (40-60°C), catalyst concentration (2-10%) and time (4-48 h) at 200rpm orbital shaking with 14 formulations acquired by applying D-Optimal experimental design had been applied. The results showed that blends of 75% palm mid fraction with 25% rice bran oil and its 14 enzymatic interesterification (EIE) yields have the potential to perform the desired behaviour as the crystals are completely melted at 32.48 - 38.28°C. However, the yields of formulation with EIE condition of 60°C, 10% lipase and 48 h incubation time (labeled N) formed the stable β crystals during tempering as it had melting peak at 34.19°C which was closer to the melting point of cocoa butter required in tempering to form V crystals (∼34°C), that assured best chocolate appearance and texture.

    Original languageEnglish
    Pages (from-to)785-790
    Number of pages6
    JournalSains Malaysiana
    Volume39
    Issue number5
    Publication statusPublished - Oct 2010

    Fingerprint

    Binary mixtures
    Melting
    Cocoa
    Lipases
    Tempering
    Crystals
    Crystallization
    Oils and fats
    Calorimeters
    Design of experiments
    Melting point
    Textures
    Nuclear magnetic resonance
    Scanning
    Catalysts
    Oils
    Temperature

    Keywords

    • Melting and crystallization profile
    • Palm mid fraction
    • Pulsed nuclear magnetic resonance
    • Rice bran oil
    • Solid fat content

    ASJC Scopus subject areas

    • General

    Cite this

    Melting behaviour of binary mixtures of palm mid fraction and rice bran oil. / Saidin, Saadah Mastura; Ramli, Nazaruddin.

    In: Sains Malaysiana, Vol. 39, No. 5, 10.2010, p. 785-790.

    Research output: Contribution to journalArticle

    Saidin, SM & Ramli, N 2010, 'Melting behaviour of binary mixtures of palm mid fraction and rice bran oil', Sains Malaysiana, vol. 39, no. 5, pp. 785-790.
    Saidin, Saadah Mastura ; Ramli, Nazaruddin. / Melting behaviour of binary mixtures of palm mid fraction and rice bran oil. In: Sains Malaysiana. 2010 ; Vol. 39, No. 5. pp. 785-790.
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