Extracción de gelatina mediante ácido acético utilizando como materia prima desechos de curtiembres

Abstract

The research work is presented as an alternative to extract gelatin using as a base waste from tanneries, companies dedicated to the transformation of leather to leather. The waste generated (glues, scraps, and meat) in these industries represents large quantities, reaching values of glues 28,800 units to the month, meat 150 720 kg to the month and scrap 8,321 kg to the month. Currently, these wastes are taken to the sanitary landfill through an environmental manager. Useful experimental techniques were used to obtain a higher yield and a lower environmental impact. The protein analysis was carried out for each sample, obtaining 30.4 percent; the percentage in tails, the 22.6 percent; the percentage in remnant and bait with 9.42 percent the percentage; high values due to the composition of the waste itself. The behavior of these by-products was observed with different concentrations of acetic acid (0.5-1 mole per liter), for a period of 24 hours. 18 treatments are presented, the most optimal for tails T16 (1 mole per liter acid concentration), T12 remnant (0.8 mole per liter acid concentration) and T8 bait (0.7 mole per liter acid concentration), at these concentrations the pH values after the second neutralization are in the range of the control taken, a higher acid concentration is required for the tails due to the presence of different types of collagens in the sample.