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INDONESIA
Journal of Marine and Coastal Science
Published by Universitas Airlangga
ISSN : 23016159     EISSN : 25280678     DOI : http://dx.doi.org/10.20473/jmcs.v9i2.20064
Core Subject : Science, Agriculture, Social,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science Immunology & microbiology
The Journal of Marine and Coastal Science is a scientific journal that publishes articles related to marine science and coastal management, including seafood nutrition, marine microbiology, marine biotechnology, coastal management, and marine biodiversity research
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Perairan
Articles 121 Documents
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Antioxidant Activity of Gracilaria verrucosa Extract in Body Lotion Formulation Fransisca, Fida; Mubarak, Ahmad Shofy; Mahasri, Gunanti
Journal of Marine and Coastal Science Vol. 15 No. 1 (2026): FEBRUARY
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jmcs.v15i1.84713

Abstract

Indonesia has a tropical climate with high year-round solar exposure, which increases the risk of oxidative stress and premature skin aging caused by ultraviolet radiation. Red seaweed Gracilaria verrucosa is known to contain bioactive compounds with potential antioxidant properties; however, its application as a substitute for synthetic antioxidants in cosmetic formulations remains limited. This study aimed to evaluate the antioxidant activity of G. verrucosa extract and its potential as an alternative to Butylated Hydroxytoluene (BHT) in body lotion formulations. Extraction was performed using 96% ethanol through maceration for 48 hours, resulting in an extract yield of 2.47%. The study employed an experimental method with a Completely Randomized Design consisting of five treatments, including a control without antioxidants (K0), BHT 0.1%, and G. verrucosa extract at concentrations of 3%, 5%, and 7%, with four replications. Phytochemical screening revealed the presence of alkaloids, flavonoids, saponins, phenolics, and steroids, while tannins were not detected. The IC₅₀ value of G. verrucosa extract was 63.57 ppm, indicating strong antioxidant activity. The IC₅₀ values of body lotion formulations were 1,266 ppm (K0), 137.77 ppm (BHT 0.1%), 175.95 ppm (EGV 3%), 131.82 ppm (EGV 5%), and 106.17 ppm (EGV 7%). The incorporation of G. verrucosa extract into body lotion exhibited antioxidant activity comparable to or higher than that of BHT 0.1%, indicating its potential as a safe and sustainable natural antioxidant for marine-based cosmetic formulations.

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