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Effect of fractional crystallization on composition and thermal characteristics of avocado (Persea americana) butter

Abdul Manaf, Yanty Noorzianna and Marikkar, Jalaldeen Mohammed Nazrim and Che Man, Yaakob (2013) Effect of fractional crystallization on composition and thermal characteristics of avocado (Persea americana) butter. Journal of Thermal Analysis and Calorimetry, 111 (3). pp. 2203-2209. ISSN 1388-6150; ESSN: 1572-8943

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Official URL: http://link.springer.com/article/10.1007%2Fs10973-...

Abstract

Fractionation of plant butters like avocado (Persea americana) may yield useful fat derivatives with distinct physical and functional properties. In this study, avocado butter was sequentially crystallized in acetone at 5 °C (2 h), 0 °C (24 h), and −20 °C (24 h) until the mother-liquor becomes devoid of any crystal formation. The high-melting stearin isolated at 5 °C and low-melting olein isolated at −20 °C were compared with the original sample in terms of fatty acid and triacylglycerol (TAG) compositions and thermal profiles. With respect to the original sample, low-melting olein is possessed with higher proportions of diunsaturated and triunsaturated TAG while high-melting stearin is found to become enriched with disaturated and trisaturated TAG molecules. These differences in compositions make the basic physico-chemical parameters as well as the thermal profiles of high-melting stearin and low-melting olein to be distinctly different from those of the original sample.

Item Type:Article
Keyword:Avocado butter; Fractional crystallization; Differential scanning calorimetry (DSC)
Faculty or Institute:Halal Products Research Institute
Publisher:Springer
DOI Number:10.1007/s10973-011-2055-y
Altmetrics:http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1007/s10973-011-2055-y
ID Code:28035
Deposited By: Nurul Ainie Mokhtar
Deposited On:07 Mar 2016 16:03
Last Modified:07 Mar 2016 16:03

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