Proximate, Mineral and Antinutritional Composition of Fermented Slimy Kolanut (Cola verticillata) Husk and White Shell

This study evaluates the proximate, mineral and antinutritional composition of slimy kolanut husk and white shell also known as obi olooyo in Yoruba language, a tribe in Nigeria. The samples were subjected to liquid and solid state fermentation and were dried, milled, sieved and analysed. Unfermented samples served as the control. The analyses revealed the presence of protein, fiber, ash, fat, moisture and carbohydrate, with observed reduction in fiber content for proximate analyses. Magnesium, potassium and calcium measured in percentage were observed to be more prominent among the minerals analysed for. Other minerals determined were sodium, phosphorus, iron and zinc. Antinutritional analyses showed the presence of phytate, oxalate, tannin, alkaloid, flavonoid and cyanide. There was an increase and decrease in the nutritional and antinutritional composition of the samples respectively, when compared with the control samples. The study has shown the samples to be useful in the fortification of animal feeds.