| abstract |
Method of coloring materials with natural dyes comprising the following steps: - preparing a water bath comprising extracts of natural origin for coloring and enzymes with oxidase or peroxidase activity in the indicated extracts, at a temperature of 30-60 ° C and a pH of 4-6; - impregnate the material for coloring in the aforementioned bath; in which the materials are previously subjected to a pretreatment process with plasma and / or ozone. |