Simple Extraction of Dragon Fruit (Hylocereus polyrhizus) Peel as Natural Dye Colorant - Sudarmi, Sri; Department of Chemical Engineering, Faculty of Industrial Technology, UPN “Veteran” Yogyakarta Jl. SWK 104 Lingkar Utara Condongcatur Yogyakarta. 55283 (Prodi Teknik Kimia, Fakultas Teknologi Industri, UPN "Veteran" Yogyakarta, 2015)