Investigation of Essential Metals in White Lupin Grain in Some Selected Amhara Region, Ethiopia

Abstract

Back ground: Plants are the most important sources of food for human beings. Among plant sources, legumes products are important sources of protein and minerals in the diets of millions of people in the world. White lupin (Lupinus albus), the local name of “Gibto” is one of the traditional pulse crops in Ethiopia especially in Amhara regional state. Objective: This study focuses on the determination of essential metal in white lupin. Methods: In this study, the concentration of selected metals (Ca, Fe, Zn and Cd) in raw lupin cultivated in different part of Amhara Region, Ethiopia particularly in Debretabor, Merawi and Kossober were determined using FAAS. Result: The observed metal concentration in three cultivars of raw lupin was in the range of Ca (87.71±0.638 to101.14±0.42 mg/100g), Fe (3.83±0.22 to 10.3±0.1g/100g), Zn (15.91±0.865 to 28.22±0.14 mg/100g) and Cd (1.32 ± 0.04 to 1.38 ± 0.02 mg/100g). The difference in metal concentration between samples based on the difference in geographical location were determined by using one way ANOVA Duncan’s multiple range test at a significant level of P < 0.05. Conclusion: The result shows that the ability of white lupin seeds to accumulate relatively higher amount of Ca, Fe, and Zn. Toxic metal Cd was found to be comparatively at lower level. The content metals in all sample of lupin were similar trained across the verities that could be arranged in the following order: Ca > Fe > Zn > Cd. Further study should be carried out to analyze the soil metal content on which white lupin is grown and to study correlation of metals between soil and lupin plants.