| Abstrakt: |
The aim of this study was to determine nutritional composition of six varieties and four potato clones grown in Rwanda to understand their potential utilization in food applications. The experiment was arranged in Completely Randomized Design (CRD). The proximate composition and minerals were determined using standard methods. Collected data were subjected to Analysis of Variance (ANOVA) using SAS version 9.2. Means separation was done using Tukey's test at 5% level of significance. Potato composition ranged from 73.07-79.55% for moisture content, 16.90-22.33% for total carbohydrates on fresh wet basis (FWB), 0.68-1.08% for crude ash FWB, 0.09-0.22% for crude lipids FWB, 1.82- 2.84% for crude protein FWB and2.06-2.96% for crude fibers FWB. Minerals FWB ranged from 4.41-10.21 mg/100g for calcium, 13.40-23.99 mg/100g for magnesium, 0.53-1.06 mg/100g for iron, 0.12-0.37 mg/100g for zinc, 400.00- 593.73 mg/100g for potassium and 41.19-74.83 mg/100g for phosphorus. Orthogonal contrast showed that clones had lower fibers, higher crude ash and higher lipids than varieties on average. On average varieties had lower zinc, more iron and more phosphorus than clones. There was a positive correlation between Mg and Fe, Mg and K, Mg and P, Fe and P, Zn and K as well as between K and P. Potatoes in this study had different nutrients in different proportions for both clones and varieties and they can be used as source of nutrients in formulation of different diets. [ABSTRACT FROM AUTHOR] |
