Caracterización de la producción y optimización del procesamiento de extracción de colorantes de AÑIL (Indigofera suffruticosa Mill)

Abstract

In this work was found that the best stage by the añil (Indigofera suffruticosa Mill) harvesting is presented to 5 months after seedling, when the Blue Dye Powder (PDP) and indigo maxim yields were reached. The best dyes extraction conditions were : ratio raw material/solvent from 1:20 to 1:6.5, extraction time 6-8 hours, temperature : 25-35°C, extraction pH 7 by indigo extraction and 12 by both indigo and indirubin extraction, aeration time 10-30 min and aeration pH 8. The main effect of the ultrasound during the extraction was the reduction of the extraction time from 6 to 2 hours. The maxim yields obtained were 1.79 g of CAP/100 of dry weight and 3 mg of indigo/g of dry weight to pH 7 and 1.6 mg of indirubin/g of dry weight to pH 12.