Kadriadi, Dieter Rahmadiawan, Hairul Abral, Ilhamdi, Muhammad Ivan, Akmal, Dian Handayani, Laila Rezki Septria Ningrum, Rahmi Syarifah Masri, Bernadeta Ayu Widyaningrum, Mohamad Haafiz Mohamad Kassim, Melbi Mahardika
In this study, an active packaging film was developed using polyvinyl alcohol (PVA) incorporated with Bajakah Tampala (BT) extract, which acts as an antimicrobial agent and UV-protective additive. The solution casting method was employed, with BT extract concentrations ranging from 0.5 to 2 wt%. The BT extract exhibited strong antimicrobial properties and significant UV-protection, with a total phenolic content and IC50 values of 242.88 ± 0.34 mg GAE/g and 7.83 ± 0.03 μg/mL, respectively. Incorporating 2 wt% BT extract into the PVA matrix resulted in substantial UV-light protection and enhanced tensile strength by 55.1 %, tensile modulus by 167.2 %, elongation at break by 53.1 %, toughness by 84.3 %, and crystallinity index by 21.8 %. Additionally, the composite film retained moderate antimicrobial and antioxidant activity. These findings demonstrate PVA-based active packaging enriched with BT extract offers promising properties for food packaging applications, including enhanced mechanical strength, UV resistance, barrier performance, and antimicrobial protection. © 2025
Department of Mechanical Engineering, Andalas University, Padang, 25163, Indonesia; Laboratory of Nanoscience and Technology, Department of Mechanical Engineering, Andalas University, Padang, 25163, Indonesia; Department of Machine Maintenance Engineering, Morowali Polytechnic of Metal Industry, Morowali, 94974, Indonesia; Department of Mechanical Engineering, National Cheng Kung University (NCKU), Tainan, 70101, Taiwan; Department of Mechanical Engineering, Universitas Negeri Padang, Sumatera Barat, Padang, 25173, Indonesia; Research Collaboration Center for Nanocellulose, BRIN and Andalas University, Padang, 25163, Indonesia; Laboratory of Sumatran Biota, Faculty of Pharmacy, Andalas University, Sumatera Barat, Padang, 25163, Indonesia; Research Center for Biomass and Bioproducts, National Research and Innovation Agency of Indonesia (BRIN), Cibinong, 16911, Indonesia; Division of Bioresource Technology, School of Industrial Technology, Universiti Sains Malaysia, Gelugor, 11800, Malaysia
