AI Article Synopsis
- Nisin (NIS) was added to edible films made from chitosan lactate and various starch blends, revealing that higher NIS concentrations allowed for more diffusion-driven release.
- The starch-based films had limited solubility compared to fully dissolvable carriers, resulting in a slower and incomplete NIS release, with half-release times differing widely (under 1 minute to around 13 hours).
- The NIS-enhanced films exhibited antibacterial properties against specific pathogens and improved UV-blocking, though the 0.2% NIS concentration reduced the tensile strength of the films by about 17-32%.
Article Abstract
Nisin (NIS) Z was incorporated (0.05 %, 0.1 %, 0.2 %) into edible films based on chitosan lactate (CHL) and 75/25 blends of polysaccharides (corn starch (CS), wheat starch (WS), oxidized potato starch (OPS), pullulan (PUL)) with CHL. The increase in the NIS/polymer ratio promoted the diffusion-driven release. Compared with the fully dissolvable CHL and PUL/CHL carriers, the starch/CHL films had limited solubility (≈27-37 %) and, consequently, ensured slower/incomplete release of NIS. The assayable NIS half-release times, determined in water, ranged from <1 min to ∼13 h. Probably due to the similar pH (≈4.5), there were generally no large differences between the antibacterial activities of the formulations. The NIS-supplemented systems limited the growth of some pathogens (B. cereus, L. monocytogenes, S. aureus), phytopathogens (P. carotovorum), and bacterial starter cultures. The NIS improved the UV-blocking ability of the films, but the 0.2 % NIS addition weakened (by ≈17-32 %) the tensile strength of most of the films.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.foodchem.2022.134760 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!