Determination Of Deterioration And Antioxidant Activity Of Vegetagle Oils Marketed In South Eastern Nigeria
ABSTRACT
The degree of deterioration and
antioxidant activity of seven edible oil from different sources as marketed in
retail outlets or open market were investigated using acceptable biochemical
indicators. Different brands of oils; Processed Palm oils (3 brands), olive
oil, soya bean, groundnut, and cod liver oil were used for the study.
Antioxidant activity was determined spectrophotometrically by measuring tile
disappearance of 2,, 2-diphenyl-1- picrythydrazyl (DPPH) at 517nrn; and the
degree of deterioration by iodine number and spectrophotometric determination
of malonidialdehyde (a by product of lipid peroxidation. There were evidence of
deterioration in all the oils as indicated by their contents of malonialdehyde
and iodine numbers. Also all the oils showed varying degrees of antioxidant
activity with olive oils having the highest and processed palm oil tile lowest
antioxidant activity. A negative' correlation (-0.51) between tile contents of
malonialdehyde and iodine number of the oils was also observed. The varying of
concentration of triaclyglycerol content of the oils gave support to both the
varying degree of deterioration and tile antioxidant activities of the oils.
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NWUGHA, O (2021). Determination Of Deterioration And Antioxidant Activity Of Vegetagle Oils Marketed In South Eastern Nigeria. Mouau.afribary.org: Retrieved Nov 18, 2024, from https://repository.mouau.edu.ng/work/view/determination-of-deterioration-and-antioxidant-activity-of-vegetagle-oils-marketed-in-south-eastern-nigeria-7-2
OSOCHI, NWUGHA. "Determination Of Deterioration And Antioxidant Activity Of Vegetagle Oils Marketed In South Eastern Nigeria" Mouau.afribary.org. Mouau.afribary.org, 14 Jul. 2021, https://repository.mouau.edu.ng/work/view/determination-of-deterioration-and-antioxidant-activity-of-vegetagle-oils-marketed-in-south-eastern-nigeria-7-2. Accessed 18 Nov. 2024.
OSOCHI, NWUGHA. "Determination Of Deterioration And Antioxidant Activity Of Vegetagle Oils Marketed In South Eastern Nigeria". Mouau.afribary.org, Mouau.afribary.org, 14 Jul. 2021. Web. 18 Nov. 2024. < https://repository.mouau.edu.ng/work/view/determination-of-deterioration-and-antioxidant-activity-of-vegetagle-oils-marketed-in-south-eastern-nigeria-7-2 >.
OSOCHI, NWUGHA. "Determination Of Deterioration And Antioxidant Activity Of Vegetagle Oils Marketed In South Eastern Nigeria" Mouau.afribary.org (2021). Accessed 18 Nov. 2024. https://repository.mouau.edu.ng/work/view/determination-of-deterioration-and-antioxidant-activity-of-vegetagle-oils-marketed-in-south-eastern-nigeria-7-2