Effects of plasticizers on the physicochemical properties of kappa-carrageenan films extracted from Eucheuma cottonii

International Journal of Biological Macromolecules
A M Ili BalqisZ A Nur Hanani

Abstract

The physicochemical properties of κ-carrageenan films extracted from Eucheuma cottonii (E. cottonii) incorporated with different concentrations and types of plasticizers were studied. Glycerol, sorbitol, and polyethylene glycol-300 (PEG-300) in the range of 10-60% were used as plasticizers. The results showed that the thickness and moisture content (MC) of films increased significantly (p≤0.05) with the increase in plasticizer concentration. Sorbitol-plasticized films had the lowest values. Sorbitol-plasticized films have better mechanical properties and the lowest water vapor permeability (WVP), solubility and water uptake ratio (WUR) compared with glycerol and PEG-plasticized films (p≤0.05). Fourier transform infrared (FTIR) spectra showed the intermolecular reactions between κ-carrageenan and the plasticizers in the films. Scanning electron microscopy (SEM) observations indicated that sorbitol-plasticized films have a compact structure, even at the highest concentration. The melting temperature (Tm) of films decreased (p≤0.05) with an increase in the plasticizer concentration. Here, the glycerol-plasticized films had the lowest values. X-ray diffraction (XRD) showed broad and narrow peaks of the un-plasticized κ-carrageenan ...Continue Reading

Citations

Sep 17, 2020·Environmental Science and Pollution Research International·Muthiyal Prabakaran SudhakarGopal Dharani
Nov 17, 2020·Critical Reviews in Food Science and Nutrition·Ravindra Pal SinghJagan Mohan Rao Tingirikari
Dec 3, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Luisa Bataglin AvilaGabriela Silveira da Rosa
Apr 18, 2020·Carbohydrate Polymers·Fedor V VityazevSergey V Popov
Mar 17, 2020·International Journal of Biological Macromolecules·Bianca-Ioana DogaruMaria-Cristina Popescu
Jun 1, 2019·International Journal of Biological Macromolecules·Maria-Cristina PopescuBogdan C Simionescu
Aug 2, 2019·International Journal of Biological Macromolecules·Sultana ParveenSwagata Dasgupta
Jun 22, 2021·International Journal of Biological Macromolecules·K Z HazratiR Jumaidin

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