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), 265–272. https://doi.org/10.18517/ijaseit.6.2.769