Application of Anthocyanin Extracted from Purple Sweet Potato and Nata de Coco Film in The Smart Food Packaging Technology. Jurnal Tekno, [S. l.], v. 20, n. 1, p. 15–23, 2023. DOI: 10.33557/jtekno.v20i1.2346. Disponível em: https://journal.binadarma.ac.id/index.php/jurnaltekno/article/view/2346. Acesso em: 2 jul. 2025.