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The present study aims to assess the effect of different nitrogen (N) rates on the chemical composition and antioxidant properties of stevia frozen fresh and dried leaves, and to define the best growing conditions to maximize the levels of bioactive compounds. In general, processing affects more significantly the tocopherol and sugar contents than N fertilization. The most abundant sugars were xylose,...
The purpose of the investigation was the assessment of the effect of fertilization with different form and dose of nitrogen as well as harvest term on yield, chlorophyll, carotenoids and polyphenols content, and antioxidant activity of stinging nettle (Urtica dioica L.) leaves. The lowest total yield obtained from three-year-lasting plantation resulted from preplant fertilization with lime saltpeter...
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