NATURAL COFFEE PULP DYE POWDER FROM WASTE COFFEE PULP FOR TEXTILE MATERIALS

摘要

The present utility model relates to a novel natural coffee pulp dye powder obtained by spray-drying the liquid extract of waste Coffea sp. (coffee) pulp. The pulp is a fibrous mucilaginous material obtained as waste product after removal of the beans during the processing of coffee beans from coffee berries. The presence of high amount of tannins in coffee pulp makes it a suitable source of natural dye. Its conversion into powder form prolongs its shell-life and reduces the preparation time during dyeing applications. The powder is utilized as dye to textile materials such as cotton, pineapple, pineapple-silk, silk and abaca fabrics. The textile materials are pretreated and mordanted with copper prior to dyeing to obtain shades of brown. The colorfastness to washing and perspiration of coffee dyed textile materials were found acceptable and passed the standard value in terms of color change and staining.