Aktivitas Antioksidan dan Tabir Surya Krim Ekstrak Biji Alpukat (Perseaamericana Mill.) dan Ekstrak Tongkol Jagung (Zea mays L.)

Abstract

Antioxidants are substances that function to help overcome oxidative damage caused by free radicals or reactive oxygen compounds. Formation of free radicals in the body one of which is due to exposure to ultraviolet (UV) radiation. The formation of free radicals due to UV radiation can be overcome by using sunscreen. Avocado seeds and corn cobs are known to be rich in flavonoids which have the potential to be used as antioxidants and sunscreens. Both are wastes that have the potential to be utilized. This study aims to test and determine the antioxidant and sunscreen activities of five cream formulations containing a 1% mixture of avocado seed extract and corn cobs (0% : 1%, 0.25% : 0.75%, 0.5% : 0.5%, 0.75% : 0.25%, and 1% : 0%). Each formula was replicated five times. The preparation of each formula was evaluated including organoleptic (smell, color, and consistency) and homogeneity which was carried out by 25 panelists. Also tested for pH, spreadability, cream type, stability, antioxidant activity using the DPPH method and sunscreen activity (in vitro determination of SPF) on each formula. The organoleptic test results showed an orange cream with a characteristic odor and a semi-solid to a slightly liquid consistency. All cream formulas are homogeneous, the type of cream produced is oil in water type, physically stable cream, pH of all creams is 8, dispersion is 6-8cm, no antioxidant activity while sunscreen activity is minimal to moderate (value of SPF 3-5).