Journal
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
Volume 9, Issue 1, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jece.2020.104694
Keywords
PVOH; Grapefruit seed extract; Curcumin; Composite film; Antimicrobial activity; Antioxidant activity
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Funding
- National Research Foundation of Korea (NRF) - Korea government (MSIT) [2019R1A2C2084221]
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A multifunctional film based on PVOH was fabricated by blending with grapefruit seed extract and curcumin, improving UV-barrier and mechanical properties while enhancing antioxidant and antibacterial actions. The combination of the fillers led to unique effects on the film properties, making it suitable for active food packaging applications.
PVOH-based multifunctional films were fabricated by blending with grapefruit seed extract (GSE) and curcumin using a solvent casting technique. Both fillers (GSE and curcumin) were mixed well and evenly spread in the polymer matrix to form a compatible composite with PVOH. The addition of GSE and curcumin improved the UV-barrier (>95 %) and mechanical properties (30 %) of the PVOH film. Besides, functional properties like antioxidant and antibacterial actions were increased meaningfully by incorporating GSE and curcumin. However, the incorporation of GSE and curcumin slightly reduced the water vapor barrier property of the film without changing the thermal stability. When the combination of GSE and curcumin was used in a composite film, a unique effect was seen on the film properties. The PVOH/GSE/curcumin film with enhanced mechanical and functional properties can be used for active food packaging applications.
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