Lana de ovino (Ovis aries) lavada con detergente biodegradable más sal en grano.

Abstract

The objective of the research was to evaluate the use of biodegradable detergent plus salt in grain to wash Creole sheep wool from the Bolivar Province. The development of physical-mechanical tests was carried out in the agro-industrial fiber laboratory of the Department of Animal Sciences of ESPOCH for a period of 60 days. Descriptive statistics were used for the field samples. For wool washing, a Complete Randomized Design was applied with Tukey's mean separation and Kruskal Wallis test for the non-parametric variables in the following treatments with 4 replications: T0= 0 g grain salt, T1= 50 g grain salt, T2= 100 g grain salt and T3= 150 g grain salt. The variables for the characterization of the soiled wool were physical properties that were evaluated by descriptive statistics. The following means were obtained: relative length 6.38 cm, absolute length 8.5 cm, number of curls 8.84 curls/cm and diameter 34.60 μm. In the washed wool, physical and sensory properties such as wick length, number of curls, diameter, whiteness intensity, feel and brightness were evaluated through a Complete Randomized Design. The results showed no differences between treatments. In the yarn, sensory and mechanical properties were evaluated, such as intensity of whiteness, touch, brightness, tensile strength and elongation, variables that did not show differences. The economic analysis showed a higher cost benefit of $1.28 when applying the T3 treatment corresponding to 150 g of salt in grain, so it is concluded that the best numerical results of the sensory properties of the wool were obtained when using 150 g of salt in grain which also presented a high economic profitability among the treatments.