Faridah, A. 2016. Comperation of Porang Flour (morphophallus muelleri) Purification Method : Conventional Maceration (gradient ethanol leaching) and Ultrasonic Maceration Method using Response Surface Methodology. International Journal on Advanced Science, Engineering and Information Technology. 6, 2 (Apr. 2016), 265–272. DOI:https://doi.org/10.18517/ijaseit.6.2.769.