Comparative Analysis of Nutritional Composition: Proximate and Mineral Content of Soybean Varieties

Soybean is a valuable source of high-quality protein and oil, widely used in human diets. This study aimed to evaluate the proximate composition and mineral content of soybean varieties from two research centers (Kelafo and Dolo-ado centers). Mature soybean seeds were collected from Kelafo, Dolo-ado, and local markets. Proximate composition (moisture, ash, fat, protein, fiber) and mineral content (calcium, iron, magnesium, zinc) were analyzed using standard methods, with triplicate measurements. Data analysis and modeling were conducted using GenStat version 18 and Excel 2019. Moisture content ranged from 4.78–7.34%, protein 19.65–30.35%, fat 5.37–21.61%, and fiber 3.75–6.29%. Calcium ranged from 48.9-157.2 mg/100g, iron 5.37–12.06 mg/100g, magnesium 658.5-2429.1 mg/100g, and zinc 3.79–6.45 mg/100g. Varieties K-Pawe-01, K-Pawe-03, D-Pawe-03, and D-Gezale exhibited high nutritional value, making them suitable for addressing protein-energy malnutrition and mineral deficiencies, particularly in vulnerable populations such as infants and lactating mothers.