CD Skripsi
Uji Efektivitas Tabir Surya Berbahan Aktif Ekstrak Etanol Biji Alpukat
ABSTRACT
Avocado seeds (Persea americana Mill.) contain antioxidant compounds
such as phenolics and flavonoids that can neutralize free radicals and absorb
ultraviolet (UV) radiation, making them potential natural active ingredients in
sunscreen formulations. This research aimed to determine the optimal concentration
of ethanol extract of avocado seeds in relation to its inhibitory concentration (IC50),
the improvement of the sun protection factor (SPF), and the sunscreen
characteristics that meet the quality standards of SNI 16–4339–1996 for sunscreen
products. A completely randomized design (CRD) was used with four
concentrations of avocado seed ethanol extract (0.25%, 0.5%, 0.75%, and 1%) and
four replications. The observed parameters included pH, viscosity, SPF,
spreadability, homogeneity, antioxidant activity (IC50), and sensory attributes
(aroma, color, and texture). Data were analyzed using Analysis of Variance
(ANOVA) and followed by Duncan’s Multiple Range Test (DMRT) at the 5%
level. Increasing the concentration of ethanol extract of avocado seeds significantly
increased antioxidant activity, SPF, and spreadability, while decreasing pH and
viscosity. The best treatment was 0.75% concentration of avocado seed ethanol
extract, with a pH of 6.77, viscosity of 2869.48 cP, SPF of 15.21 (maximum
category), spreadability of 6.53 cm, and IC50 of 45.71 ppm (very strong
antioxidant). This formulation complied with the Indonesian National Standard
(SNI 16–4339–1996), exhibited good physical stability, and was preferred by
panelists in terms of aroma, color, and texture.
Keywords: Sunscreen, sun protection factor, avocado seed, antioxidant, ethanol
Tidak tersedia versi lain