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<p>This study investigates the incorporation of olive mill wastewater extract (OMW) into poly(butylene succinate) (PBS) to develop active packaging films. PBS-OMW composite films were produced through the solvent casting technique to create PBS composite films with 2%, 5%, and 8% by weight amounts of OMW. These composite films exhibited improved functional properties, in comparison to neat PBS, and emphasized the superior antioxidant performance of PBS-OMW films by exhibiting strong hydrogen-donor capacity as well as improved antimicrobial activity. Biodegradable tests (disintegration and respirometry) showed that PBS-OMW composites were environmentally friendly. Thermal analysis demonstrated that olive mill waste had an influence on the crystallization and melting profile of PBS; however, no significant effect on thermal stability was observed. Additionally, OMW extract had a plasticizing effect on the mechanical properties of the composite. Migration tests indicated that PBS-OMW was suitable for the food packaging industry, and food storage studies at 4&#xa0;°C with PBS-OMW composites containing 8% OMW inhibited spoilage of strawberries and extended shelf life compared to the control.</p> Graphical Abstract <p></p>

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Antioxidant and Antibacterial Poly(Butylene Succinate) Films Enriched with Olive Mill Wastewater Extract for Sustainable Food Packaging

  • 期刊论文

  • 发表日期：

    2026年6月29日

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  • Siwar Soltani,
  • Sawssen Hajji,
  • Noureddine Allouche,
  • Sami Boufi

摘要

This study investigates the incorporation of olive mill wastewater extract (OMW) into poly(butylene succinate) (PBS) to develop active packaging films. PBS-OMW composite films were produced through the solvent casting technique to create PBS composite films with 2%, 5%, and 8% by weight amounts of OMW. These composite films exhibited improved functional properties, in comparison to neat PBS, and emphasized the superior antioxidant performance of PBS-OMW films by exhibiting strong hydrogen-donor capacity as well as improved antimicrobial activity. Biodegradable tests (disintegration and respirometry) showed that PBS-OMW composites were environmentally friendly. Thermal analysis demonstrated that olive mill waste had an influence on the crystallization and melting profile of PBS; however, no significant effect on thermal stability was observed. Additionally, OMW extract had a plasticizing effect on the mechanical properties of the composite. Migration tests indicated that PBS-OMW was suitable for the food packaging industry, and food storage studies at 4 °C with PBS-OMW composites containing 8% OMW inhibited spoilage of strawberries and extended shelf life compared to the control.

Graphical Abstract