Quantitative determination of water soluble vitamins, minerals and proximate compositions of three varieties of beans in Bauchi State Nigeria

Z.S Mohammed,A.I Matinja,H Tijjani,J Salihu,A Abdullahi,M.A Dangambo

doi:10.4314/gjpas.v25i2.1

Abstract

The quantitative determination of water soluble vitamins, minerals and proximate compositions of three varieties of beans in Bauchi State, Nigeria, was carried out in this study. Three varieties of beans which includes one of the most commonly consumed species of cowpea (Vigna unguiculata) locally called Kanannade, the least consumed (most rare) specie of cowpea (Vigna unguiculata) locally called gayan-gayan and soybean (Glycine max) locally called waken soya found in Bauchi State, Nigeria were analysed. Results for the determination of the proximate composition shows that soybean (Glycine max) among three different samples had the highest protein content (34.21 %), ash content (3.11 %), Crude fat (25.30 %). While Cowpea (kanannade) has the highest Carbohydrate content (58.04 %) and Cowpea (gayan-gayan) has the highest Moisture contents (12.43 %) respectively. Soya bean has the highest contents of vitamin (B1, B3, and B6) for the three water soluble vitamins analysed although the values obtained were less than the recommended dietary allowance recommended by the World Health Organization (WHO). In the Mineral composition of the two species of cowpea beans (Vigna unguiculata), and soybean analysed, soybean had the highest content of most of the mineral elements. The concentration of potassium was found to be very much higher than all the other mineral elements that were determined in all the samples. The results from this analysis shows that the three varieties of beans analyzed were found to be rich in minerals and highly nutritious.Keywords: Vigna unguiculata, Glycine max, vitamins, minerals and proximate composition

Highlights

Vitamins and minerals are considered essential nutrients because they perform several roles in the body
The moisture content of gayan-gayan was found to be the highest (12.43%) while soybean (Glycine max) had the lowest moisture content (10.00%) with a value which was found to be in range of that reported by Rani, Grewal and Khetarpaul (2008)
It has been reported that Glycine max has a very high fat content as a legume and about 47% of its energy value comes from its fat content (Mesinna, 1999, Rani, Grewal and Khetarpaul, 2008)

Summary

INTRODUCTION

Vitamins and minerals are considered essential nutrients because they perform several roles in the body. H. Tijjani, Department of Biochemistry, Faculty of Science, Bauchi State University, Gadau, Bauchi. A. Abdullahi, Department of Biochemistry, Faculty of Science, Bauchi State University, Gadau, Bauchi. The most common dietary Crude Protein Determination: Dried sample (0.15g) supplements are multi-vitamin and multi-mineral supplements. Soybean compositions are characterized with Determination of Crude Fat: Sample (3g) was important nutritional contents such as vitamins, lipids, wrapped in a filter paper, weighed (w2) and extraction minerals and very high proteins which range from 33 was done with petroleum ether on a sohxlex to 43% (Saha et al, 2008). Like Nigeria such vitamin and mineral supplements are cooled and weighed.

Results

DISCUSSION

CONCLUSION