Karakteristik gelatin tulang ikan nila (Oreochromis niloticus) di ekstrak dengan asam dan basa

This study was aimed to determine chemical and physical characteristics of extracted tilapia fish bone gelatin using acid (HCl) alkaline (NaOH) solutions. The research method used comparative experimental with Paired t-test consisting 2 treatments, namely 4% HCl NaOH 3 replications. Analysis parameters consisted yield, gel strength, viscosity, pH, moisture content, ash. Characteristics solution resulted in strength viscosity 4.40, 182.65 g/bloom. 9.90 cP. Characteristic has moisture, ash pH levels 5.85%, 2.35%, 4.25. Gelatin bases produced 4.67%, 150.41 g/bloom 6.03 cP (moisture, ash, pH) were 5.77%, 3.37%, 10.24. extraction process acids significantly different on except yield content. from bones content accordance SNI standards for while uses had ash.Keywords: characteristic physico-chemical; strength; pH; viscosity;