Mohammad Suffian James, Redzuan, Paik San H’ng, and Norwahyuni Mohd Yusof. “Preparation and Characterization of Polyvinyl Alcohol Carboxymethyl Cellulose Films With Citric Acid and Activated Carbon for Active Food Packaging”. BioResources 21, no. 3 (May 20, 2026): 6163–6173. Accessed July 23, 2026. https://ojs.bioresources.com/index.php/BRJ/article/view/25100.