Desenvolvimento de validação de metodologia analítica, para determinação de teor e avaliação de dissolução, na associação de diosmina 450mg e hesperina 50mg em comprimidos revestidos.

Abstract

The Diosmina and Hesperidin are flavonoids used in disorders venous and disorders of the peripheral circulation of retorn treatment. These active principles act basically in three ways in the circulation of return: extending the activity of norepinephrine pariental of the veins, increasing venous tone, and reducing venostase, in micro-circulation, reduces the capillary hyper-permeability and reduces the fibrinolysis; in lymphatic vessels, increases the frequency and the intensity of contractions. In carrying out this work, techniques for analysis of dissolution and determination of the level of actives principles, Diosmine and Hesperidin in the proposed combination, were developed and validated. The quantification of active principles was performed by a high performance liquid chromatography (HPLC) coupled to a PDA detector, using as mobile phase with a flow rate of 1,5 mL per minute of a mixture of acetonitrile: glacial acetic acid: methanol: water (2:6:28:66 v / v), using a stainless steel column (15cm x 4,6mm) packed with octadecylsilyl silica gel for chromatography (5µm) (X terra) maintained at a temperature of 40º. The compounds were detected at 275nm. The analysis of dissolution were performed using tris-hidroximetilaminometano as buffered medium pH 12, 4 + 1% of lauryl sodium sulfate, 900 mL, apparatus ll and rotate the paddle at 100 revolution per minute for 60 minutes. The results showed that both methods, assay of diosmine and hisperidin and dissolution of both, showed linear response. It were found linear coefficients of 0.9954 for diosmina and 0.9992 for hesperidin in the analysis of assay, and 0.9984 for diosmina and 0.9947 for hesperidin in the analysis of dissolution. Thus it was concluded that the analytical techniques proposed are specific, sensitive, precise, accurate and robust for the quantitative analysis and dissolution of the association of diosmine 450 mg and hesperidin 50 mg in coated tablet form.