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Pectinolytic enzymes are used the in fruit juice extraction and its purification, textile fiber treatment and vegetal oil extraction. The aim of this work was to use the methodology of the factorial experimental design and response surface analysis to verify the effects of medium initial moisture content, addition of ammonium sulphate and potassium phosphate in the production of the polygalacturonase through of the solid-state fermentation, using cashew (Anacardium occidentale L.) as substrate and Aspergillus niger CCT0916 as transformation agent in the solid-state fermentation process. The best production condition of the polygalacturonase was at moisture of 40%, 1% of ammonium sulphate and without addition of the potassium phosphate. It was reached 16 U/g of activity of the poligalacturonase and 82% of viscosity reduction with 30 hours of fermentation.

APLICAÇÃO DA METODOLOGIA DE SUPERFÍCIE DE RESPOSTA NO ESTUDO DA PRODUÇÃO DE PECTINASE POR FERMENTAÇÃO EM ESTADO SÓLIDO DO PEDÚNCULO DE CAJU