Effect of enzymatic interesterification on the melting point of tallow-rapeseed oil (lear) mixture

Pirkko Forssell, Riitta Kervinen, Maija Lappi, Pekka Linko, Tapani Suortti, Kaisa Poutanen

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    Abstract

    To reduce the melting point of a tallow-rapeseed oil mixture, the triglyceride composition of the mixture was altered by enzymatic interesterification in a solvent-free system.
    The interesterification and hydrolysis were followed by melting point profiles and by free fatty acid determinations. The degree of hydrolysis was linearly related to the initial water content of the reaction mixture.
    The rate of the interesterification reaction was influenced by the amount of enzyme but not much by temperature between 50 and 70°C. The melting point reduction achieved by interesterification depended on the mass fractions of the substrates: the lower the mass fraction of tallow, the larger the reduction of the melting point.
    Original languageEnglish
    Pages (from-to)126-129
    JournalJournal of the American Oil Chemists' Society
    Volume69
    Issue number2
    DOIs
    Publication statusPublished - 1992
    MoE publication typeA1 Journal article-refereed

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