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Developing a simultaneously antioxidant and pH-responsive κ-carrageenan/hydroxypropyl methylcellulose film blended with Prunus maackii extract.

Authors :
Sun G
Chi W
Xu S
Wang L
Source :
International journal of biological macromolecules [Int J Biol Macromol] 2020 Jul 15; Vol. 155, pp. 1393-1400. Date of Electronic Publication: 2019 Nov 13.
Publication Year :
2020

Abstract

к-Carrageenan and hydroxypropyl methylcellulose were used as matrix materials in which the extract of Prunus maackii pomace (EPm) was added to prepare a simultaneously antioxidant and pH-responsive film. EPm effectively increased the flexibility, barrier properties, antioxidant activity and pH-responsiveness of the film. When EPm content was increased to 8%, the elongation at break, heat-sealing strength and oxygen permeability of the film could reach 43.20 ± 2.07%, 1096.39 ± 51.29 N/m and 2.23 ± 0.02 cm <superscript>3</superscript>  mm m <superscript>-</superscript> <superscript>2</superscript>  day <superscript>-</superscript> <superscript>1</superscript>  atm <superscript>-</superscript> <superscript>1</superscript> , respectively. Ultraviolet-visible spectra of EPm and the films color changed significantly in the range of pH 2.0-12.0. The κC/Hm/EPm <subscript>y</subscript> film obviously slowed the oxidation of lard compared with commercial PE film, and exhibited visible changes from red to purple when TVB-N in the pork reached 13.18 mg/100 g which was close to the freshness limit of 15.00 mg/100 g. Therefore, the κC/Hm/EPm <subscript>y</subscript> film can be promisingly used for extending oil shelf life and indicating the protein-rich food quality.<br /> (Copyright © 2019 Elsevier B.V. All rights reserved.)

Details

Language :
English
ISSN :
1879-0003
Volume :
155
Database :
MEDLINE
Journal :
International journal of biological macromolecules
Publication Type :
Academic Journal
Accession number :
31733240
Full Text :
https://doi.org/10.1016/j.ijbiomac.2019.11.114