Firmansyah, S. B., Firmansyah, R. A. and Hayati, N. (2017) “Antioxidant Activity and Antibacterial Seaweed Methanol Extract (Sargassum Duplicatum J. Agardh) and Its Potential as a Natural Preservative Alternative to Salted Eggs”, Journal of Natural Sciences and Mathematics Research, 2(1), pp. 133–142. Available at: https://journal.walisongo.ac.id/index.php/JNSMR/article/view/1648 (Accessed: 12 August 2025).