Chemical composition and nutritional value of some varieties of soybean cultivated in Mongolia

Khongorzul Mungunkhuyag,Zolzaya Bayarsukh,Batjargal Batdorj,Oyundelger Ganzorig

doi:10.5564/mjas.v33i2.1752

Abstract

Soybean has a lot of benefits for human nutrition, well-being and soil nutrition. Soybean seed contain higher concentration of protein and fat. The objective of this work was to evaluate the nutritional composition and mineral contents in soybean seeds of four different varieties of soybean for their future application as food products. The soybeans were cultivated in Mongolia. The moisture, protein, crude fat, reducing carbohydrate’s concentrations were determined by Kjeldahl, Soxhlet and Bertrand’s method in dried soybean seeds, and the calory of 100 g seed was calculated. The mineral concentration in the ash was determined by ICP-OES method. Among them, the Severnaya-4 variety contained the highest amount of protein, 31.5%, the Sibiryachka variety had the highest concentration of crude fat, 20.35%, and reducing sugar, 1.24%. Moreover, the Severnaya-4 and Sibiryachka soybean seeds had the highest mineral concentration. The lower concentration of protein of these four soybean varieties was probably due to the lower temperature during the seed-filling period in Mongolia. Sibiryachka and OAC vision had the highest amount of energy in 100 g raw seed than other two varieties. The Severnaya-4 and Sibiryachka soybean seeds could be better sources for protein, fat and minerals than the Nei dou-4 and OAC vision varieties.

Highlights

Soybean, Glycine max L. (Merr.), is one of the most cultivated plants throughout the world
In 2017, OAC vision was certified as a settled soybean variety by the Ministry of Food, Agriculture and Light Industry in Mongolia [8]
Little differences existed in the ash concentration in soybean grains, and the ash concentrations were similar to soybean seeds from Brazil, China, and the USA

Summary

Introduction

Glycine max L. (Merr.), is one of the most cultivated plants throughout the world. Soybeans are much higher in potassium, phosphorus, calcium, and magnesium, as well as pyridoxine and vitamin K than other legume plants [2] These nutritional properties make soybean a potential source of protein, fat, carbohydrate, and vitamins for people and animal feed. Tuul D. and Bayarsaikhan B. had determined that legume plants obtained needed nitrogen from atmosphere /53.8-64.6%/ and soil /33.9-43.9%/ by Khongorzul Mungunkhuyag et al MJAS Vol 33 (2) 2021 using 15N isotope [6] These features made soybean suitable for mixed and sequential cropping systems. In 2017, OAC vision was certified as a settled soybean variety by the Ministry of Food, Agriculture and Light Industry in Mongolia [8] This variety contains 27.4% protein, 27.2% starch, and 20.2% fat. Severnaya-4 was verified as a variety to be tested in 2014 [10], it contains 31.5% protein, 27.1% starch, and 16.8% fat [9]

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Conclusion