Inhibition of Lipid Peroxidation Induced by Ultraviolet Radiation by Crude Phlorotannis Isolated from Brown Algae Sargassum hystrix v. buxifolium C. Agardh - Harnita, Agnes Nora Iska; Faculty of Pharmacy, Sanata Dharma University, Yogyakarta (Universitas Gadjah Mada, 2013)