Viabilidade de tingimento natural de fibras de algodão empregando antocianinas extraídas do feijão preto (Phaseolus vulgaris L)

Abstract

The commom bean (Phaseolus vulgaris L) is a legume with prominence worldwide and widely cultivated in Brazil. It has a rich chemical phenolic composition with flavonoids, isoflavones, proanthocyanidins, tannins, phenolic acids and anthocyanins amongst them. The anthocyanin found in their shell has functionals properties such as color presence and antioxidants. This research goal is to analise the dyeing viability in natural fibers as cotton with the pigment present in the natural dye extracted in the common bean. This work purpose is to develop a new economically viable dyeing process using low cost raw material with easy access to anyone. The process as a whole takes place by separating the raw material, extracting the anthocyanin present in the beans from a bath in water, then dyeing natural fibers using this water and drying them last. The experiment revealed efficient with positives results based on initial thoughts, proving that is possible and viable this extration and dyeing process using this method as a basis.