Spatial Specificity of Antioxidant Capacity Assay in Five Varieties of (Moringa oleifera) Leaves Extracts
Oluewu, M. M *
Department of Food and Animal Science, Alabama Agricultural and Mechanical University, Normal, Alabama, USA.
Walker, L.T
Department of Food and Animal Science, Alabama Agricultural and Mechanical University, Normal, Alabama, USA.
Ogutu, S.
Department of Food and Animal Science, Alabama Agricultural and Mechanical University, Normal, Alabama, USA.
Koko, C.O
Department of Food and Animal Science, Alabama Agricultural and Mechanical University, Normal, Alabama, USA.
*Author to whom correspondence should be addressed.
Abstract
The objective of this work is to provide a comprehensive description of the average antioxidant capabilities (TEAC and FRAP) of several types of Moringa oleifera, as well as their geographical distribution and a comparative analysis across different nations. The assessment of antioxidant activity was conducted by the use of several techniques, such as ABTS radical cation, Trolox, and FRAP reagent. The antioxidant score (TEAC and FRAP) was dissolved in 80% methanol and 70% ethanol extracts from five distinct nations. The data was examined using descriptive analysis, a one-way ANOVA test, and Tukey's post hoc test. The research also established correlations between antioxidant capabilities among various types originating from different nations. The study shows that among the five countries that tested, India and Nigeria have the highest average Trolox Equivalent Antioxidant Capacity (TEAC) numbers for Moringa oleifera leaves. The other four are the USA, Haiti, and Ghana. These values represent a consistent set of environmental circumstances or agricultural practices. Ghana's variability is modest, but the average TEAC levels of the USA and Haiti are lower, suggesting a greater range of possibilities while India have the ability to serve as a dependable supplier of Moringa oleifera products that consistently display antioxidant qualities. However, the antioxidant levels in goods from Nigeria, Ghana, the USA, and Haiti vary, sourcing strategies and quality control procedures may need to be adjusted. Moringa oleifera leaves have varying antioxidant capacity across different nations, with Haiti demonstrating the greatest FRAP value and TEAC value among the countries. India has the greatest Total Equivalent Antioxidant Capacity (TEAC) value and a strong Ferric Reducing Antioxidant Power (FRAP) value, whilst Ghana exhibits a robust antioxidant profile. India and Haiti consistently provide high-quality products for general antioxidant uses, but Nigeria may need extra quality control measures or mixing with more potent sources to reach the necessary antioxidant benefits. The comprehensive score is calculated by taking the average of the TEAC and FRAP percentages. Notably, the TEAC numbers are greatly affected by the place of birth. Compared to TEAC, the place of origin has a bigger effect on the FRAP values. The geographical origin of Moringa oleifera significantly affects its capacity for reduction, displaying remarkable variances between countries like as Ghana, Haiti, India, and Tusk.
Keywords: Moringa oleifera, antioxidant capacity, medicinal plant