The Production of Gelatin from Snapper Scales (Lutjanus camphecanus Sp.) through Enzymatic Pretreatment - Triastuti, Warlinda Eka; Department of Industrial Chemical Engineering, Institut Teknologi Sepuluh Nopember, Kampus ITS Sukolilo, Surabaya, 60111, Indonesia (Lembaga Penelitian dan Pengabdian kepada Masyarakat, 2022)