Tuning the structure and physiochemical properties of sodium alginate and chitosan composite films through sodium tripolyphosphate (STPP) crosslinking.
In: International journal of biological macromolecules, Jg. 264 (2024-04-01), Heft Pt 2, S. 130463
Online
academicJournal
Zugriff:
Sodium tripolyphosphate (STPP), an inorganic and non-toxic polyphosphate, has potential applications as a crosslinking agent in the fabrication of edible films. This study utilized STPP in the development of sodium alginate-chitosan composite films, with a focus on their suitability for food packaging applications. The results indicate that the incorporation of STPP led to an increase in film thickness (from 0.048 ± 0.004 to 0.078 ± 0.008 mm), elongation at break (from 11.50 ± 1.49 % to 15.88 ± 2.14 %), water permeation (from 0.364 ± 0.010 to 0.521 ± 0.021 gmm/(m 2 h*kPa)), and moisture content (from 25.98 ± 0.20 % to 28.12 ± 0.17 %). In contrast, there was a decrease in tensile strength (from 30.23 ± 2.08 to 25.60 ± 1.22 MPa) and swelling index (from 752.9 ± 17.1 to 533.5 ± 8.9 %). Scanning electron microscopy (SEM) analysis revealed the formation of distinctive needle-like microcrystals with the incorporation of STPP. Fourier-transform infrared spectroscopy (FTIR) analysis indicated intermolecular interactions between STPP and the film-forming biopolymers. The data obtained from Thermogravimetric analysis (TGA) and Differential Scanning Calorimetry (DSC) demonstrated enhanced thermal stability of STPP-loaded films at elevated temperatures. Furthermore, the films exhibited increased DPPH scavenging activity with the addition of STPP. This study underscores the potential of STPP as a crosslinking agent for the development of composite edible films, suggesting applications in the field of food packaging.
Competing Interests: Declaration of competing interest The authors declare no conflicts of interest.
(Copyright © 2024. Published by Elsevier B.V.)
Titel: |
Tuning the structure and physiochemical properties of sodium alginate and chitosan composite films through sodium tripolyphosphate (STPP) crosslinking.
|
---|---|
Autor/in / Beteiligte Person: | Bhatia, S ; Shah, YA ; Al-Harrasi, A ; Jawad, M ; Khan, TS ; Koca, E ; Aydemir, LY |
Link: | |
Zeitschrift: | International journal of biological macromolecules, Jg. 264 (2024-04-01), Heft Pt 2, S. 130463 |
Veröffentlichung: | Amsterdam : Elsevier ; <i>Original Publication</i>: Guildford, Eng., IPC Science and Technology Press., 2024 |
Medientyp: | academicJournal |
ISSN: | 1879-0003 (electronic) |
DOI: | 10.1016/j.ijbiomac.2024.130463 |
Schlagwort: |
|
Sonstiges: |
|