Khedri, Sara and Sadeghi, Ehsan and Delshadian, Zohre and Mortazavian, Amir Mohammad (2020) Bioactive edible films: Development and characterization of gelatin edible films incorporated with casein phosphopeptides. Journal LWT.
Full text not available from this repository.Abstract
This study aimed to investigate the effects of bioactive casein phosphopeptides (CPPS) (0, 0.1, 0.2, 0.3 and 0.5% (w/v)) on physico-mechanical, structural, antimicrobial and antioxidant characteristics of gelatin-based films. The results demonstrated that the addition of CPPs to gelatin films significantly decreased solubility and water vapor permeability (WVP) of the treatments G-CPP0.1, G-CPP0.2 and G-CPP0.3, but the optimal treatment was achieved in treatment G-CPP0.1 (4.46 × 10−12 g (m s Pa)−1 of WVP and 43.5% of solubility). The light transmittance decreased with increasing CPPs concentration in the films, achieving the lowest transmittance (0–11.2%) of UV light in the 200–350 nm range. Treatment G-CPP0.1 showed improved mechanical properties such as the highest TS (18.14 MPa) and EAB (84.1%). FTIR and DSC analysis indicated suitable interactions between gelatin and CPPS functional groups in the sample G-CPP0.1. Gelatin-CPPS films showed good inhibitory effects against the tested Gram-positive microorganisms (Staphylococcus aureus and Bacillus cereus) by increasing the concentration of CPP in the composite film. In addition, they presented effective antioxidant activity by DPPH test (2,2-diphenyl-1-picryl hydrazide). In general, the results showed that the gelatin-CPPS edible films with lower CPP concentrations (0.1–0.2% of CPP) could be potentially used in food packaging to ensure the quality of food products, due to their suitable physico-mechanical properties and enhanced bioactive characteristics.
| Item Type: | Article |
|---|---|
| Subjects: | R Medicine > RZ Other systems of medicine |
| Divisions: | Faculty of Medicine, Health and Life Sciences > School of Medicine |
| Depositing User: | samira sepahvandy |
| Date Deposited: | 16 Dec 2020 07:42 |
| Last Modified: | 16 Dec 2020 07:42 |
| URI: | http://eprints.lums.ac.ir/id/eprint/2479 |
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