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Detection of lard in cocoa butter—its fatty acid composition, triacylglycerol profiles, and thermal characteristics


Citation

Azir, Marliana and Abbasiliasi, Sahar and Tengku Ibrahim, Tengku Azmi and Abdul Manaf, Yanty Noorzianna and Sazili, Awis Qurni and Mustafa, Shuhaimi (2017) Detection of lard in cocoa butter—its fatty acid composition, triacylglycerol profiles, and thermal characteristics. Foods, 6 (11). art. no. 98. pp. 1-12. ISSN 2304-8158

Abstract / Synopsis

The present study investigates the detection of lard in cocoa butter through changes in fatty acids composition, triacylglycerols profile, and thermal characteristics. Cocoa butter was mixed with 1% to 30% (v/v) of lard and analyzed using a gas chromatography flame ionization detector, high performance liquid chromatography, and differential scanning calorimetry. The results revealed that the mixing of lard in cocoa butter showed an increased amount of oleic acid in the cocoa butter while there was a decrease in the amount of palmitic acid and stearic acids. The amount of POS, SOS, and POP also decreased with the addition of lard. A heating thermogram from the DSC analysis showed that as the concentration of lard increased from 3% to 30%, two minor peaks at −26 °C and 34.5 °C started to appear and a minor peak at 34.5 °C gradually overlapped with the neighbouring major peak. A cooling thermogram of the above adulterated cocoa butter showed a minor peak shift to a lower temperature of −36 °C to −41.5 °C. Values from this study could be used as a basis for the identification of lard from other fats in the food authentication process.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Agriculture
Faculty of Biotechnology and Biomolecular Sciences
Faculty of Veterinary Medicine
Halal Products Research Institute
Institute of Bioscience
Institute of Tropical Agriculture and Food Security
DOI Number: https://doi.org/10.3390/foods6110098
Publisher: MDPI
Keywords: Cocoa butter; Lard; Fatty acids methyl ester; Triacylglycerol; Adulteration; Food
Depositing User: Nabilah Mustapa
Date Deposited: 07 Jun 2018 16:33
Last Modified: 07 Jun 2018 16:33
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.3390/foods6110098
URI: http://psasir.upm.edu.my/id/eprint/60522
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