Formulation and evaluation of the Exopolysaccharide compound extract lotion from the Microalgae Spirulina sp

Spirulina sp. is a type of microalgae containing exopolysaccharide compound composition. Exopolysaccharide compounds are biopolymers that have very wide applications, including as antioxidants. Antioxidant compounds have the potential to be developed as additives in cosmetics. Antioxidant compounds are useful for warding off free radicals from UV rays. This study aims to make a lotion formulation of exopolysaccharide compounds from microalgae Spirulina sp. This research was conducted by extracting exopolysaccharide compounds from Spirulina sp. using 96% ethanol. The lotion formulations were made with various concentrations of 0.5%, 1% and 1.5% exopolysaccharide compounds. The exopolysaccharide compound lotion then tested the lotion evaluation including organoleptic test, pH, homogeneity, dispersion, and irritation test. Organoleptic test results showed a white lotion, odorless, soft texture. The pH value of the exopolysaccharide compound lotion ranges from 5.75 to 6.15. Homogeneity shows no solid particles and meets the conditions. The spreadability of the lotion is between 5.8-6.0. The results of the irritation test using test animals showed a primary irritation index of 0, so it did not cause irritation. Based on the research results, it can be concluded that the exopolysaccharide compound extract from the microalgae Spirulina sp. can be made into a good and stable lotion formula. (paper)