MINERALS, MICROELEMENTS AND POLYPHENOLS CONTENT IN THE SOYBEAN VARIETIES GROWN IN DIFFERENT LOCALITIES OF SLOVAKIA

Mã¡Ria Timoracká,Pavol Trebichalský,Jã¡N Tomáš,Alena Vollmannová,Ä½Uboå¡ Harangozo

doi:10.15414/jmbfs.2015.4.special3.152-156

Mã¡Ria Timoracká, Pavol Trebichalský + Show 3 more

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https://doi.org/10.15414/jmbfs.2015.4.special3.152-156

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Abstract

The aim of this study was to evaluate the influence of the grown locality on minerals and risky metal intake from the soil and on polyphenols formation in the soybean seeds. The research was realised in five localities of Slovakia using the seven soybean varieties. From the point of the soil hygiene, all determined values of heavy metals content in soils were lower than given hygienic limits, with the exception of Cd. Minerals and heavy metals contents in the soybean samples show significant differences between cultivars and localities. The values show imbalance between the potassium contents and other minerals. The order of the elements levels was determined as following: Fe > Zn > Mn > Cu > Ni > Pb > Cr ≈ Co > Cd. The risky elements contents, with exception of Cd, Cu, Pb and Ni content (only in some localities), did not exceed a limit for legumes by Food Codex SR. The total polyphenols content ranged from 817.6 to 1281.0 μg eq. tannic acid/g and suggest the variety dependence, but the locality influence was not significantly confirmed.

Highlights

The aim of this study was to evaluate the influence of the grown locality on minerals and risky metal intake from the soil an d on polyphenols formation in the soybean seeds
T he research was realised in five localities of Slovakia using the seven soybean varieties
Soybean is a unique source of polyphenols component s called phyt oest rogens which include a wide variety of plant products with weak estogenic activity (Franke et al, 1994)

Summary

Introduction

The aim of this study was to evaluate the influence of the grown locality on minerals and risky metal intake from the soil an d on polyphenols formation in the soybean seeds. From the point of t he soil hygiene, all determined values of heavy metals content in soils were lower than given hygienic limits, with the exception of Cd. Minerals and heavy metals contents in the soybean samples show significant differences between cultivars and localities. T herefore the aim of this study was to determine the contents of mineral elements, trace elements, and total polyphenols in the seven varieties of cultivated raw soybeans (Glycine max L.) – cvs. Bolyi-45, Supra, Korada, Belmont, Crystal, Erin, Quito and to evaluate the relationship of these components of soybean grown at five different localities of Slovakia (Malacky, Oponice, Jelšovce, Marcelová, Belá nad Cirochou). The location of delivery points of soybean and soil samples is indicated on the map of Slovakia (Figure 1)

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