Mangrove stem (Rhizopora mucronata) contains a tannin compound which has potential as tanning material as well as tanner leather coloring. Meanwhile, the public uses more tannin from mimosa tannin and has not optimized the use of mangrove tannins. This study aimed to determine the quality of rabbit hide tanned from mangrove tannin and mimosa tannin. The material used was Rex rabbit hide of 1-year age cut. The research method used a completely random design (CRD) experiment. The treatment ratio of mangrove stem tannin and tannin mimosa concentration were 0:30%, 10:20%, 20:10% and 30%:0. The parameters measured by chemical properties consist of: degree of tanning, moisture, ash and tannin bound to the skin. Physical properties consisted of: tensile strength, elongation and sewing strength. The results showed that the use of mangrove tannin and mimosa tannin for tanning ratios had no significant effect (P> 0.05) on the level of tanning, moisture, ash, and tannin that were bound to tanned skin, tensile strength, elongation and sewing strength. The results showed that the quality of tanned hide had a tanning degree of 62.31%, 13.32% moisture content, 1.57% ash content, and 25.14% tannin content. The physical quality of tensile strength was 356.35 N/cm, elongation was 29.80% and sewing strength is 84.41 Kg/cm. The results of the quality of this tanned hide had fulfilled SNI 06-6121-1999 of leather goods. The conclusion was that tannin extract from mangroves can be used as vegetable tanning agent, with the same quality as mimosa tanning agent. KEY WORDS: mangrove tannin, mimosa tannin, rabbit hide, quality of hide CALITATEA PIELII DE IEPURE TĂBĂCITĂ CU MANGROVE (Rhizopora mucronata)REZUMAT. Tulpina de mangrove (Rhizopora mucronata) conţine un tanin care are potenţial ca material de tăbăcire, precum şi de colorare a pielii tăbăcite. Pe de altă parte, se foloseşte mai mult tanin din mimosa, iar utilizarea taninului din mangrove nu este optimizată. Acest studiu are scopul de a determina calitatea pielii de iepure tăbăcite cu tanin din mangrove şi tanin din mimosa. S-a utilizat ca material o piele de iepure Rex, la vârsta de 1 an. Metoda de cercetare a presupus desfăşurarea unui experiment cu design complet aleatoriu (CRD). Rapoartele de concentraţii de tanin din tulpină de mangrove şi tanin din mimosa au fost de 0:30%, 10:20%, 20:10% şi 30%:0. Parametrii măsuraţi prin proprietăţile chimice au reprezentat: gradul de tăbăcire, umiditate, cenuşă şi taninul legat de piele. Proprietăţile fizice au constat în: rezistenţă la tracţiune, alungire şi rezistenţă la coasere. Rezultatele au arătat că utilizarea taninului din mangrove şi a taninului din mimosa în raporturile de concentraţii menţionate nu a avut niciun efect semnificativ (P> 0,05) asupra valorilor gradului de tăbăcire, umidităţii, cenuşii şi taninului legat de pielea tăbăcită, rezistenţei la tracţiune, alungirii şi rezistenţei la coasere. Rezultatele au arătat că pielea tăbăcită a avut un grad de tăbăcire de 62,31%, umiditate 13,32%, conţinut de cenuşă 1,57% şi conţinut ...
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