Caracterización del pigmento presente en el pericarpio del fruto del nogal (Nogalina) como tintura orgánica.

Abstract

The objective of this study was to bibliographically review and characterize the pigment in the pericarp of the walnut fruit as an organic dye by describing the different colors obtained when applying walnut with the combination of mordants of natural and synthetic origin in textile fibers of origin. animal (alpaca and sheep) and vegetable (cotton). Two subscribed databases belonging to the Higher Polytechnic School of Chimborazo were used in addition to the national repository of Ecuador. The analyzed information allowed to synthesize the results in statistical tables and graphs in order to describe the tinctorial characteristics of the walnut fruit (walnut) and identify the characteristics of walnut applied in the fibers of animal origin. It was observed that for sheep wool more natural amortizers (grain salt and lemon) presented colors that are within the range of greens and tan color which showed to be more resistant to light. For the alpaca fiber mordants based on lemon, grain salt, alum and vinegar were used, resulting in colors from medium brown to dark brown. For walnut-dyed cotton plus mordants (aluminum sulfate and acetic acid), the best mordant was aluminum sulfate giving better clarity and brilliance. In conclusion, sheep wool presented the strongest colors in all walnut applications with more natural mordants than alpaca fiber. To measure comfort, it is recommended to perform it in different geographical areas of the Ecuadorian mountains to measure the degree of acceptance of animal and vegetable fiber textiles.