Karakterisasi kulit kambing pada persiapan penyamakan dengan gambir dan sifat kulit tersamak yang dihasilkan

The purposes of this research were to evaluate characteristic of goat skin before preparation for tanning, to observe the effect of concentration of gambier tanning agent and pH of gambier solution during tanning process. This research began with characterizing of skin before the tanning process. Gambier concentrations and pH of solutions were varied. Characterization of the goat skin was done on the area of goat skin, chemical composition, and weight change at each steps of tanning preparations. Physical and chemical analysis and observation of the leather were done according to SNI-06-0463-1989-A. Goat skin in this research was categorized as first quality according to the wide dimension and high water content. The results showed that the characteristics of dried goat skins changed during preparation and tanning process. The optimum concentration of gambier was 9% if the solution had a pH of 4 and the optimum concentration was 3% if the solution had a pH of 8.