Disparity in Antioxidant Activities of Some Selected Plant Waste Oil
Wumi Esther Adelegan, Victor I Ajie
Abstract
Agro-industrial residues are often discarded despite being rich in bioactive compounds with potential antioxidant properties. Valorizing such wastes as natural sources of antioxidants could offer both environmental and economic benefits while providing safer alternatives to synthetic antioxidants. This study aimed to evaluate the antioxidant activities of oils extracted from Apple (Malus domestica Borkh) seed, tangerine (Citrus reticulata) seed, Plantain (Musa paradisiaca) peel, Date (Phoenix dactylifera) seed, Groundnut (Arachis hypogaea) hull, and Pear (Persea americana. L.) seed. Antioxidant activities were assessed through Ferric Reducing Antioxidant Power (FRAP) and 2,2-diphenyl-1-picrylhydrazyl (DPPH) assays. Data obtained were subjected to one way Analysis of Variance (ANOVA) to compare activities among the oils. In the DPPH assay, date seed oil exhibited the strongest scavenging activity, followed by plantain peel oil, while groundnut hull oil showed the lowest. In the FRAP assay, pear seed oil demonstrated the highest reducing power, whereas groundnut hull oil again recorded the lowest activity. Plantain peel oil ranked consistently high in both assays. The findings suggest that plant waste oils, particularly date seed, pear seed, and plantain peel oils, represent promising natural sources of antioxidants. Their utilization could reduce agro-waste burdens while supporting applications in food, pharmaceutical, and cosmetic industries.
Keywords
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