Melting and crystallisation behaviour of soybean oil in blend with palm oil-based diacylglycerol


Citation

Ong C. R. E., . and Tang T. K., . and Lee Y. Y., . and Choong T. S. Y., . and Lai O. M., . and Kuan C. H., . and Phuah E. T., . Melting and crystallisation behaviour of soybean oil in blend with palm oil-based diacylglycerol. pp. 781-791. ISSN 2231-7546

Abstract

In the present work the physicochemical properties namely fatty acid composition (FAC) iodine value (IV) acylglycerol content and thermal profiles of palm-based diacylglycerol (PDAG) in blend with soybean oil (SBO) at different concentrations (0-100 wt ) were evaluated. The Fourier-transform infrared spectroscopy (FTIR) spectra were determined at mid-infrared region to assign the functional groups. SBO exhibited the same absorption bands as PDAG except at wavelength of 1711 1450 1359 850 and 779 cm. This phenomenon indicated that the absorption frequency of the binary mixtures greatly depended on the composition of oil samples. IV of the oil blends was found to decrease from 131.09 0.88 I‚‚/100 g to 51.55 0.60 I‚‚/100 g with increasing PDAG concentrations due to the reduced degree of unsaturation. Generally binary blends with an increasing PDAG concentration showed a decrease in linoleic acid (C18:2) as well as increase in oleic acid (C18:1) and palmitic acid (C16:0) contents. The DAG content for all the blends increased from 5.15 1.40 to 87.80 0.33 and TAG content decreased from 94.85 1.40 to 12.20 0.33 in tandem with increasing PDAG content. Incorporation of PDAG into SBO significantly affected the crystallisation and melting profiles of SBO.


Download File

Full text available from:

Abstract

In the present work the physicochemical properties namely fatty acid composition (FAC) iodine value (IV) acylglycerol content and thermal profiles of palm-based diacylglycerol (PDAG) in blend with soybean oil (SBO) at different concentrations (0-100 wt ) were evaluated. The Fourier-transform infrared spectroscopy (FTIR) spectra were determined at mid-infrared region to assign the functional groups. SBO exhibited the same absorption bands as PDAG except at wavelength of 1711 1450 1359 850 and 779 cm. This phenomenon indicated that the absorption frequency of the binary mixtures greatly depended on the composition of oil samples. IV of the oil blends was found to decrease from 131.09 0.88 I‚‚/100 g to 51.55 0.60 I‚‚/100 g with increasing PDAG concentrations due to the reduced degree of unsaturation. Generally binary blends with an increasing PDAG concentration showed a decrease in linoleic acid (C18:2) as well as increase in oleic acid (C18:1) and palmitic acid (C16:0) contents. The DAG content for all the blends increased from 5.15 1.40 to 87.80 0.33 and TAG content decreased from 94.85 1.40 to 12.20 0.33 in tandem with increasing PDAG content. Incorporation of PDAG into SBO significantly affected the crystallisation and melting profiles of SBO.

Additional Metadata

[error in script]
Item Type: Article
AGROVOC Term: Palm oils
AGROVOC Term: Soybean oil
AGROVOC Term: Glycerol
AGROVOC Term: Melting point
AGROVOC Term: Crystallization
AGROVOC Term: Blending
AGROVOC Term: Infrared spectrophotometry
AGROVOC Term: Physicochemical properties
AGROVOC Term: Linoleic acid
AGROVOC Term: Oleic acid
Depositing User: Mr. AFANDI ABDUL MALEK
Last Modified: 24 Apr 2025 00:54
URI: http://webagris.upm.edu.my/id/eprint/8215

Actions (login required)

View Item View Item
Agris UPM is powered by EPrints 3 which is developed by the School of Electronics and Computer Science at the University of Southampton. More information and software credits.