Effect of the use of Nacascolote seed flour (Caesalpinia coriaria) in the tanning of bovine hides, Chiquimula, Guatemala

Abstract

The work is a response to the use of chemicals such as chromium, highly polluting to the environment, on the other hand, vegetable products such as oak bark and quebracho destructive method of the tree are used. Determine the dose of Nacascolote seedflour that in leather tannery provides the best yields. For the development of the experiment, 0.75, 1.00, 1.25 and 1.50 g were used. of nacascolote flour / g. of leather, with a randomized block design and LSD stocking test, the variables evaluated were weight (g) and thickness (mm). The sensory variables, texture, resistance to bending and rubbing, uniformity, adherence to the finish, brightness, impermeability and tanning degree, analyzed with the Friedman test, using a panel of experts in the tannery. The results indicated that the final weight shows that the treatment of 1.0 g. flour / g. of leather, presented a significant difference (P <0.05) with the lowest weight. The thickness there were no significant differences. In the texture, the resistance to the fold and the uniformity of the leathers, reveals that they are different statistically (P <0.05) being the best of 1.0 g. flour / g. Leather. In the adhesion to the finish 1.0 g. flour / g. leather and 1.5 g. flour / g. of leather were significant (P <0.05). In the brightness with significance were the 1.0 g. flour / g. of leather, and 0.75 g. flour / g. of leather, and the degree of tannery of 1.0 g. flour / g. of leather is the most significant (P <0.05). The use of different doses of Nacascolote flour has an effect on the weight and final thickness of tanned hides when the tannery substance is increased. Regarding the texture, resistance to bending, uniformity, resistance to rubbing, adherence, gloss, impermeability and degree of tanning the treatment of 1.0 g. of flour / g. Leather was accepted by the tanners.