Influence of Soy Protein Isolate on Gelatin-based Edible Film Properties Iryanti Fatyasari Nata, Chairul Irawan, Lazuardi Ramadhan and Muhammad Rizky Ramadhani MATEC Web Conf., 156 (2018) 01014 Published online: 14 March 2018 DOI: 10.1051/matecconf/201815601014