Biopolymers of Chitosan-Anthocyanin From Purple Sweet Potatoes (Ipomoea Batatas L.) Extract and Their Interaction with Formalin. Indonesian Journal of Chemical Science, [S. l.], v. 13, n. 1, 2024. DOI: 10.15294/ijcs.v13i1.3865. Disponível em: https://journal.unnes.ac.id/journals/ijcs/article/view/3865. Acesso em: 9 dec. 2025.