<![CDATA[Abstrak. Penelitian ini bertujuan untuk mendeskripsikan pengaruh penambahan ion logam K+terhadap aktivitas enzim papain. Penentuan pengaruh penambahan ion logam dilakukan denganmengukur aktivitas enzim tanpa penambahan ion logam K+ (0 mM) dan aktivitas enzim setelahditambah ion logam K+ dengan variasi konsentrasi 0,5 mM, 1 mM, 1,5 mM dan 2 mM. Hasilpenelitian menunjukkan bahwa ion logam K+ dapat meningkatkan aktivitas enzim papain dimanakonsentrasi optimum pada konsentrasi 1 mM dengan aktivitas sebesar 1,977 unit/mL. Padakonsentrasi 0, 5 mM, 1,5 dan 2 mM masing-masing dapat meningkatkan aktivitas enzim papainsebesar 1,131unit/mL, 1,552 unit/mL dan 1,043 unit/mL.Kata Kunci : Aktivator, Enzim papain, ion logam K+Abstract. This study aimed to describe the effect of the addition of metal ion K+ to papain enzymeactivity. Determination of the effect of the addition of metal ion is done by measuring the enzymeactivity without the addition of metal ion K+ (0 mM) and enzyme activity after addition of metalion with a variety of K+concentration of 0.5 mM, 1 mM, 1.5 mM and 2 mM. The results showedthat the metal ions K+ can increase the activity of the enzyme papain which the optimumconcentration at a concentration of 1 mM to the activity of 1,977 units /mL. At concentrations of0, 5 mM, 1.5 and 2 mM each of which can increase the activity of the enzyme papain 1,131 units/ mL, 1,552units /mL and 1,043 units /mL.Keywords : Activators, papain enzyme,, metal ion K+]]>
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