Some Mechanical and Nutritive Properties of Cola Acuminata (P. Beauv.) Schott & Endl. and Cola Nitida (Vent.) Schott & Endl
Nwaokobia Kingsley, Department of Agricultural and Bio-Environmental Engineering Technology: Federal Polytechnic, Auchi. Edo State Nigeria.
Olorode Efemena Martha, Bioscience Department, Forestry Research Institute of Nigeria, Jericho Hills, Ibadan, Nigeria.
Ogboru Rachel Ogheneovo, Research coordinating unit: Forestry Research Institute of Nigeria, Jericho Hills, Ibadan, Nigeria.
The physical, nutritive and the mineral properties of two (2) specie kolanut (Cola nitida) and (Cola acuminata) were evaluated. The results show that C. nitida has the highest moisture and total ash contents of 65.27 and 1.84%, respectively. Protein and crude fibre were highest in Cola acuminata (413.62 and 10.08%, respectively). Cola acuminata has the highest content of all nutrients considered except moisture and total ash content. Both C. nitida and C. acuminata has non-detectable quantity of Chlorine and Manganese with C. acuminata having the highest quantity of Sodium (51.47% dry matter) and copper (0.98%). C. nitida also recorded the least content of all minerals except Na and Cu which were higher in C. acuminata. This work also studied the effect of drying temperature and duration on some physical and mechanical properties of Cola nitida and Cola acuminata using a surface response methodology approach. Some Physical properties determined were breadth, length, sphericity, thickness, moisture loss, Aspect ratio, Porosity, Roundness and colour, while mechanical properties studied were force at break, yield, and peak, deformation at break and peak, energy to peak and energy to break, and yield. However, all the mechanical properties studied were affected by drying temperature and time duration.
Cola Nitida, Cola Acuminata, Temperature, Nutritive, Moisture and Phosphorus
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