Karakteristik semisolid isinglass berbahan baku gelembung renang ikan patin (pangasius sp.) dengan perbedaan perendaman konsentrasi asam asetat dan asam sitrat = Characteristic of semisolid isinglass from catfish (pangasius sp) swimbladder based on different concentration in acetic and citric acid solution / Wayan Nirmala Asty