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There were two main purposes of this research. The first purpose was to identify the optimum temperature and pH for enzyme activity produced by pancreas of cow, papain, bromelin, and oropon; secondly was make inquiries about the effect of type and different levels of bating agent on the tensile strength and streat at break of chrome tanned goat leather. The material of this experiment including unripepapayas, pineapples, pancreas ofcow, oroponandskins fromlocal goatwhichwere_about2-2.5 years oia ana niaZ liyrof deviation standard. The experiment using Complete Randomized Design of f * a factorial (th6 first factor was the type of bating agent and the second factor was the various levels of bating agent). There was several variables being observed including proteolitic enzyme activity on various ptt and temperature, levels ofsoluble nitrogen, tensile strength and streat at break of chrbme tanned goat leather. Enzyme activity was measured using Malathi and Chakraborly method. While the tensile strength and streat at break of leather was tested using method based on SM0250-1989-A. Result shows that optimum temperature and pH for enzyme activity on oropon, papain and bromelin was 40'C and pH of 8, while that of 40'C andpH of 7 forpancreatic enzyme. The type and level of bating agent did not give significant implication to the tensile strength but it did significantly to the stre at at break. The level of 3 o/o papaya extact can make high tensile strength but low streat aibreakrespectively (345.0S kg/cnn';22.8o/ol,followedbypancreas extract (3 35.62kglcflf ; 26.60/o)theo.prneapplextract(322.66kglcd;24.4%)and,oropon (312.93kelcrd;26.5%). Generally the tensile strength and streat at break of chrome tanned goat leather using various non commercial bating agent (pancreas of cow, papaya extrac! pineapple extract) shows good result beyond the standard of SNI-0250-1989-A, therefore the respective materials could be used as the altemative agentto substitute the commercial agent. (

Penggunaan Ekstrak Pankreas Sapi, Bromelin, Papain pada Suhu dan pH Optimum sebagai Agensia Bating dalam Proses Penyamakan Kulit