Stable smart packaging betalain-based from red prickly pear covalently linked into cellulose/alginate blend films.
Int J Biol Macromol
; 234: 123764, 2023 Apr 15.
Article
in En
| MEDLINE
| ID: mdl-36805509
ABSTRACT
Smart materials based on biomaterials have been shown growing interest by researchers. This paper investigated pH-indicator film with less leaching containing betalain molecule extracted from red prickly pear fixed in the cellulose-alginate blend as a matrix. Herein, the film was manufactured from a blend containing covalently bounded cellulose with betalain via the creation of a Fischer esterification (FE) to solve the leaching problem of dyes in contact with food. The structural, thermal, morphological optical, and mechanical properties and the pH-sensitive properties of films were examined. The FTIR and color analysis confirmed the fisher esterification. The fisher esterification led to a pH-indicator film with less leaching with significant color stability against UV light. The smart film changes colors with the pH values, where it goes from purple at a pH below 10 to yellow color at a pH above 10. All those proprieties with contact angles helped this film to be used as an intelligent film for monitoring salmon spoilage.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Cellulose
/
Betalains
Language:
En
Journal:
Int J Biol Macromol
Year:
2023
Type:
Article