Composition and thermal analysis of lard stearin and lard olein

Yanty, N.A.M. and Marikkar, Mohammed Nazrim and Che Man, Y.B. and Long , Kamariah (2011) Composition and thermal analysis of lard stearin and lard olein. Journal of Oleo Science, 60 (7). pp. 333-338. ISSN 1347-3352 (O), 1345-8957 (P)

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Abstract

Lard being an edible fat could be used in different forms in food systems. In this study, composition and thermal analysis of lard stearin (LS) and lard olein (LO) were undertaken to determine some common parameters which would enable their detection in food. A sample of native lard was partitioned into LS and LO using acetone as solvent and the fractions were compared to the original sample with respect to basic physico-chemical parameters, fatty acid and triacylglycerol (TAG) composition, and thermal characteristics. Although LS and LO displayed wider variations in basic physico-chemical parameters, thermal properties and solidification behavior, they do possess some common characteristic features with regard to composition. In spite of the proportional differences in the major fatty acids, both LS and LO are found to possess extremely high amount of palmitic (C16:0) acid at the Sn-2 positions of their TAG molecules. Similar to native lard, both LS and LO contained approximately equal proportions of TAG molecules namely, linoleoyl-palmitoyl-oleoyl glycerol (LPO) and dioleoyl-palmitoyl glycerol (OPO). Hence, the calculated LPO/OPO ratio for LS and LO are comparably similar to that of native lard.

Item Type:	Article (Journal)
Additional Information:	7414/45785
Uncontrolled Keywords:	food adulteration, DSC, Lard detection, lard stearin, lard olien, thermal analysis
Subjects:	Q Science > QD Chemistry
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	International Institute for Halal Research and Training (INHART)
Depositing User:	Dr Mohammed Nazrim Marikkar
Date Deposited:	20 Nov 2015 08:55
Last Modified:	20 Nov 2015 08:55
URI:	http://irep.iium.edu.my/id/eprint/45785

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