Abstract
The dyeing process is one of the main responsible for the environmental problems caused by the textile industries. Natural dyes, in addition to being non-toxic, can add value to a product, due to the bioactive properties present in the extracts of certain raw materials, such as residual pomegranate peels (Punica granatum L.), coffee peels (Coffea arabica L.) and of avocado pits (Persea am…