Quantitative Estimation of Nutrients from Berries

Daniela Burduhos (Tripon), Antonia Odagiu, Claudia Balint, Sorina Dârjan, Daniela Bordea, Radu Mihăiescu

Abstract


The quantitative estimation of the nutrients from plants is often identified using Weende scheme. Thus, it may be applied to the quantitative estimation of the nutrient content of berries. The laboratory samples, after being prepared, are dried in an oven at 60 °C. After drying, the samples are ground using laboratory mills. Those parts that cannot be ground are crushed in a mortar. This laboratory operation must be performed very carefully, so as not to miss anything in the sample. Otherwise, there is a risk of erroneous results. The samples of berries used in the study consist of the species: Ribes nigrum L., Vaccinium vitis-idaea L., and Vaccinium myrtillus L. Rubus fruticosus L. These were harvested from various regions belonging to the mountainous area of Cluj County. The plant material was dehydrated and stored properly in vials for crude chemical analysis. The highest dry matter content (17.24%) was identified in Ribes nigrum L., while the lowest (12.40%) in Vaccinium vitis-idaea L. The highest protein content (1.50%) was identified in Rubus fruticosus L., while the lowest (0.66%) in Vaccinium vitis-idaea L.


Keywords


dry matter, non-nitrogenous extractive substances, protein, Weende scheme.

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