Abstract
Multi-layered films based on tilapia skin gelatin and poly(lactic acid) (PLA) were characterized, in comparison with the control gelatin and PLA films. Three different layers of multi-layered films (PLA/Gelatin/PLA) were visualized by scanning electron microscopic (SEM) analysis. The synergetic effect of lamination was evidenced by the increased mechanical properties (P < 0.05). Multi-layered films had higher water vapor barrier property and water resistance, compared to control gelatin film (P < 0.05). Gelatin films showed increased lightness (L*) with coincidental decrease in total color difference (∆E*) in the presence of PLA layers (P < 0.05). Transparency and solubility of films decreased with increasing ratio of PLA (P < 0.05). In addition, multi-layered films showed the enhanced hydrophobicity and thermal stability as evidenced by increased water contact angle and degradation temperature, respectively. Thus, PLA/Gelatin/PLA multi-layered film with improved water vapour barrier property could serve as bio-degradable packaging material for wider applications.
| Original language | English |
|---|---|
| Pages (from-to) | 222-233 |
| Number of pages | 12 |
| Journal | Food Biophysics |
| Volume | 12 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 1 Jun 2017 |
| Externally published | Yes |
Keywords
- Contact-angle
- Fish gelatin
- Microstructure
- Multi-layered film
- PLA
- Water vapor permeability
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