SciELO - Scientific Electronic Library Online

 
vol.52 número3Benthic Community zonation in a breakwater on the north coast of the state of Rio de Janeiro, BrazilEffects of croton urucurana extracts and crude resin on Anagasta kuehniella (Lepidoptera: Pyralidae) índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Brazilian Archives of Biology and Technology

versão impressa ISSN 1516-8913

Resumo

CUNHA, Fabíola Pessoa da et al. Development and optimization of extractives from Astronium urundeuva (allemão) Engl. by factorial design. Braz. arch. biol. technol. [online]. 2009, vol.52, n.3, pp. 647-652. ISSN 1516-8913.  http://dx.doi.org/10.1590/S1516-89132009000300017.

The purpose of this study was to evaluate the influences from variables of preparation on dry residue and total tannins from macerates of Astronium urundeuva barks. Thus, a 3 2 factorial design was used to study the importance of plant proportion (10, 15 and 20 %, w/v) and the ethanol concentration (40, 60 and 80 %, v/v) on the selected response. Mathematical models were fitted according to experimental data. The validated equations were used to generate response surfaces. The analysis of the surfaces showed that the optimum conditions to obtain extractive preparations with high extractive efficiency for tannins were: 10 % (w/v) of plant with ethanol 40 % (v/v) as solvent.

Palavras-chave : Astronium urundeuva; Extraction; Optimization; Factorial Design.

        · resumo em Português     · texto em Inglês     · pdf em Inglês