Development of antioxidant and antimicrobial xanthan-based cryogels with tuned porous morphology and controlled swelling features.
Int J Biol Macromol
; 156: 608-620, 2020 Aug 01.
Article
in En
| MEDLINE
| ID: mdl-32302627
ABSTRACT
Novel porous films based on xanthan gum (XG), poly(vinyl alcohol) (PVA), and red grape pomace (RGP), as entrapped natural antioxidant agent, were prepared by freeze/thawing, a versatile and non-destructive method. The stability of XG/PVA films was dependent on the crystalline zones created by PVA under freeze/thawing treatment. After three cryogenic cycles, the introduction of RGP into the 3D polymer matrix plays a major role by hindering the access of water into the cavities already formed during the first and second cryogenic cycles. By contrast, XG/PVA-based cryogels with enhanced mechanical strength were obtained when the number of freeze/thawing cycles increased from three to seven, while pores stability was improved by entrapment of RGP. The remarkable antioxidant and antimicrobial activity of XG/PVA/RGP cryogel films compared to the XG/PVA films, indicates the potential application of these systems in food packaging.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Polysaccharides, Bacterial
/
Cryogels
/
Anti-Infective Agents
/
Antioxidants
Language:
En
Journal:
Int J Biol Macromol
Year:
2020
Document type:
Article
Affiliation country:
Romania