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Application of gelatin-silver nanocomposite film as an active packaging material in toast bread.
- Source :
- Journal of Food Measurement & Characterization; Mar2024, Vol. 18 Issue 3, p2397-2408, 12p
- Publication Year :
- 2024
-
Abstract
- Biodegradable gelatin coating embedded with different concentrations (1, 3 and 5%) of silver nanoparticles (AgNPs) designed as an antimicrobial packaging system to improve the quality of toast bread samples and prolong their shelf life when stored at room temperature for a 5-day period. The findings revealed a significant enhancement in the physical (film thickness, solubility, water vapor permeability, oxygen permeability) and mechanical (tensile strength and elongation at break) properties of the gelatin-based films upon the integration of AgNPs up to 3% (P < 0.05). SEM analysis displayed a homogeneous structure in the nanocomposite films when AgNPs were integrated at concentrations ≤ 3%. This was complemented by the confirmation of the interaction between the polymer and nanoparticles, as well as the crystallinity of AgNPs in the film, validated through FT-IR spectroscopy and XRD respectively. The evaluation of physicochemical and microbial characteristics of the coated bread revealed that samples containing 3% of AgNPs effectively preserved moisture content and water activity, minimized bread firmness and staleness, thereby maintaining the lightness index (L*) of the crust/crumb in comparison to the control (gelatin alone). Furthermore, all actively coated treatments, particularly those with AgNPs at concentrations ≥ 3%, demonstrated robust antimicrobial activity by preventing bacterial and mold growth during 5 days. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 21934126
- Volume :
- 18
- Issue :
- 3
- Database :
- Complementary Index
- Journal :
- Journal of Food Measurement & Characterization
- Publication Type :
- Academic Journal
- Accession number :
- 175845875
- Full Text :
- https://doi.org/10.1007/s11694-023-02328-2