OBTAINING EXTRACTS FROM LEAVES OF MORUS NIGRA (L.) WITH THE HIGHEST CONCENTRATION OF TOTAL POLYPHENOLS AND TOTAL FLAVONOIDS

Resumo

Currently, the extract from Morus nigra L. has been used to treatment the symptoms of menopause. The aim of this study was to obtain an extract from the leaves of Morus nigra L. with the highest concentration of total polyphenols and total flavonoids. The morphoanatomical analysis, moisture and particle size were performed to characterise the plant raw material for the extractive solutions, obtained by turboextraction using a hydroalcoholic solution; the parameters recorded were the dry residue, density, determination of total polyphenols and total flavonoids. Data found in the literature resembled morphoanatomical characterisation performed in this work. The moisture was within the acceptable limit. In relation to particle size, the average diameter was 0.420 mm. The dry residue ranged from 0.12 to 3.67 g/100 g and the density of 0.8098 to 0.9180 g/mL. Experimental values of the content of polyphenols totals varied from 7.92 to 201.68 mg of quercetin/100 g of extract. While for the content of total flavonoids, the variation was 34.88 to 80.41 mg of quercetin/100 g of extract. The parameters to obtain the best yield in total of polyphenols and total flavonoids were extract 60°GL, 20% of drugs, and an extraction time of 20 minutes.