Utari, Retno, Budi Saputra, Randi Kristiana, Tiani Yunita, Valentina Kusumaningtyas, and Jasmansyah Jasmansyah. 2022. “Characteristics and Antioxidant Activity of Nanoparticles Chitosan Roselle (Hibiscus Sabdariffa)”. Jurnal Kartika Kimia 5 (2), 157-62. https://doi.org/10.26874/jkk.v5i2.180.