Losio Antioksidan Buah Naga Merah (Hylocereus polyrhizus Britton and Rose)

Abstract

Hylocereus polyrhizus Britton and Rose (Red dragon fruit) has been shown to have antioxidant activity which contains vitamin C, polyphenol, flavonoid. This research was aimed to investigate antioxidant effectivity from H. polyrhizus in form of lotion. Formulation of lotion made with 5 concentration from H. polyrhizus methanol extract are 0,04; 0,08; 0,16; 0,32 and 0,64%. Lotion antioxidant effectivity was analysing with DPPH. The research showed H. polyrhizus methanol extract had antioxidant effectivity with percent inhibition as big as 19,99±0,33; 25,01±0,08; 39,14±0,04; 66,69±0,12 dan 83,37±0,05. Result data analysis was giving significantly different of the antioxidant effectivity test. The physical stability observation of five formula with cycling test method showed unstability cause discolouration (oxidation). As well as the methods of mechanical test showed unstability of lotion because saponification process.