Desarrollo de una formulación para la curtición de piel caprina con diferentes concentraciones de ácido húmico y un porcentaje fijo de tara en la Empresa El AL-CE.

Abstract

The purpose of this research project was to establish the quality of goat leather tanned with humic acid in combination with Caesalpinia spinosa (Tare). The experimental units used in the present investigation were 16 goat skins divided into 4 treatments with 4 repetitions, each treatment differs in the addition of different concentrations of humic acid with a fixed percentage of tare, which were modeled under a Completely Random Design simple. The best results of the physical-mechanical tests: tensile strength (2973.80 N / cm2), elongation percentage (62.50%) and lastometry (7.89 mm) were reported when tanning with 10% humic acid in combination with 15% of tare. In terms of sensory ratings, excellent values of 5-point fullness are reported according to the Hidalgo scale (2018) when tanning with 20% humic acid, meanwhile, the best results in softness (4 points) and flower looseness (4.25). points) were tanned with 10% humic acid, obtaining values of 5 points when tanning only tare. When determining the chemical analyzes, very good values were obtained when tanning with 10% humic acid in its percentage of humidity (12.68%), pH (4.27) and reference index (0.73), optimal for the manufacture of leather goods. Thus, the results indicate the feasibility of tanning with 10% humic acid in combination with 15% tare, however, it is recommended to tan with 10 to 15% of humic acid varying the percentage of tare to obtain better results Sensors thus obtaining tanned leathers without chrome meeting the characteristics required by the European markets for its export as well as generating lower production costs and greater profitability for the tannery “AL-CE".