Effect of Fermentation on the Anti-Nutritional Factors and

D. C. Okafor, A. I. Peter-Ikechukwu, R. O. Enwereuzoh, A.E. Uzoukwu, S. M. Nze, M. I. Agunwa, F. I. Anagwu, C. Onyemachi


The effect of fermentation on the anti-nutritional factors and mineral composition of melon seed varieties for Ogiri production was studied. Melon seed varieties such as Citrullus vulgaris, Citrulluslanatus, Colocynthiscitrullus, Cucurbita pepo, Cucurmeropisedulis were respectively sorted, washed, boiled wrapped seed were then boiled again for 2 hours, drained, cooled and allowed to ferment naturally for 86 hours (primary fermentation). The primary fermented sees were then pounded and wrapped in little portions with “ofoala” leaf (Icacinatrichantha olive) and kept in wire mesh near a heat source for another 144 hours (secondary fermentation). Samples were drawn from the raw, boiled and fermented melon seed varieties for the quantitative analysis of mineral content and anti-nutritional prepared with the raw and primary fermented samples. Raw seed of Citrulluslanatus had the highest mineral analysis showed a decline in the boiled samples and secondary fermented sample, compared with the raw and mineral composition ranging from potassium, magnesium, cacium, iron and zinc of 1.21, 1.06, 0.89, 0.45 and 0.41mg/100g respectively followed by raw Citrullus Vulgaris with potassium, magenesium, calcium, iron and zinc of 1.18, 1.02, 0.55, 0.44 and 0.38 mg/100g respectively and 1.11, 0.94, 0.81, 0.38 and 0.31 mg/100gof potassium, magenesium, calcium, iron and zinc respectively in the primary fermented product. Statistical analysis of anti-nutrients revealed a significant reduction (p<0.05) in all the processed melon. There was a significant difference in all the processed melon with lowest anti-nutrient content ranging from alkaloid, saponin, HCN, phytate, tannin and flavonoid (0.00, 0.00, 0.00, 0.00, 0.03and 0.09 respectively) and Colocynthiscitrullus had the highest anti-nutrient content in the secondary fermentation.

Keywords:Fermentation, anti-nutritional factors, Ogiri, mineral content,melon seed varieties.

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ISSN (Paper)2224-6088 ISSN (Online)2225-0557

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