NDLI: Employment of Differential Scanning Calorimetry in Detecting Lard Adulteration in Virgin Coconut Oil

Content Provider	Springer Nature Link
Author	Mansor, T. S. T. Che Man, Y. B. Shuhaimi, M.
Copyright Year	2011
Abstract	Lard (LD) has been commonly used as an adulterant in fats and oils. The similar physical characteristic of virgin coconut oil (VCO) to LD makes LD a desirable adulterant in VCO. Differential scanning calorimetry (DSC) provides unique thermal profiling for each oil and can be used to detect LD adulteration in VCO. In the heating thermogram of the mixture, there was one major endothermic peak (peak A) with a smaller shoulder peak embedded in the major peak that gradually smoothed out to the major peak as the LD% increased. In the cooling thermogram, there were one minor peak (peak B) and two major exothermic peaks, peak C which increased as LD% increased and peak D which decreased in size as the LD% increased. From Stepwise Multiple Linear regression (SMLR) analysis, two independent variables were found to be able to predict LD% adulteration in VCO with R $^{2}$ (adjusted) of 95.82. The SMLR equation of LD% adulteration in VCO is 293.1 − 11.36 (T $_{e}$ A) − 2.17 (T $_{r}$ D); where T $_{e}$ A is the endset of peak A and T $_{r}$ D is the range of thermal transition for peak D. These parameters can serve as a good measurement index in detecting LD adulteration in VCO.
Starting Page	485
Ending Page	496
Page Count	12
File Format	PDF
ISSN	0003021X
Journal	Journal of the American Oil Chemists' Society
Volume Number	89
Issue Number	3
e-ISSN	15589331
Language	English
Publisher	Springer-Verlag
Publisher Date	2011-09-22
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Virgin coconut oil Lard Adulteration Differential scanning calorimetry Stepwise multiple linear regression Food Science Industrial Chemistry/Chemical Engineering Agriculture Biotechnology Biomaterials
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry Chemical Engineering

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