Active and intelligent gellan gum-based packaging films for controlling anthocyanins release and monitoring food freshness.
Carbohydr Polym
; 254: 117410, 2021 Feb 15.
Article
in En
| MEDLINE
| ID: mdl-33357896
ABSTRACT
Active and intelligent packaging films with multiple functions including antioxidant, antibacterial and colorimetric pH indicator properties were developed by incorporating Clitoria ternatea (CT) extract into gellan gum (G) film. G enhanced the stability of CT anthocyanins and allowed the anthocyanins to release from G film in a pH-responsive behavior. Heat-treated soy protein isolate (HSPI) was able to interact with G and CT anthocyanins through the formation of electrostatic forces and covalent bonds. G film blended with HSPI greatly reduced the swelling capacity of G/HSPI composite film and controlled the anthocyanins release at pH greater than 6.0. The physical and mechanical properties of G films such as hydrophobicity, water vapor permeability, swelling capacity and tensile strength were also significantly modified by addition of HSPI to G films. The smart films changed their color with the increase of total volatile basic nitrogen (TVBN) values during progressive spoilage of shrimp, revealing their potential application for monitoring seafood freshness.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Polysaccharides, Bacterial
/
Plant Extracts
/
Food Quality
/
Food Packaging
/
Clitoria
/
Smart Materials
/
Anthocyanins
Language:
En
Journal:
Carbohydr Polym
Year:
2021
Document type:
Article