The clarification is an important stage in the process of sweeteners for obtaining the stevioside. In this work, it was used the anionic polyelectrolyte (BETZDEARBORN TM F11) for decantation of the raw extract suspension, which possesses dark color, and it was evaluated its sweats application. The used extract was obtained in first stage from selected plants and modified genetically, in the Nucleus of Studies in Natural Products of the Universidade Estadual de Maringá (UEM), which maintains a line of denominated research Project Stevia and its plant pilot works in partnership with the private initiative. The rehearsals were accomplished in apparel Jar Test divided in two stages, either distinguished in dosage of the polymer and in the use of the supernatant or of the total suspension after treatment with calcium oxide, which accomplished the adjustment of the pH. Absorbances were read in 420 (color) and 670etam (turbidity) and, it was calculated the color removal percentage and the decantation speed. The best results in the stage 1 was when it was applied low amounts of anionic polyelectrolyte and the use of supernatant was 72.2 and 97.0% for color removal in 420etam and 670etam and the decantation speed was of 0.72cm/min. At stage 2, when it was used a risen amount of the polyelectrolyte and the total suspension, the best results obtained for color removal were of 70.5% in 420etam, and 85.6% in 670hm and decantation speed was of 0.71cm/min.
clarification; stevioside; anionic polyelectrolyte; color removal percentage
