Tannic acid crosslinked chitosan/gelatin/SiO2 biopolymer film with superhydrophobic, antioxidant and UV resistance properties for prematuring fruit packaging

The environmental pollution caused by plastic films urgently requires the development of non-toxic, biodegradable, and renewable biopolymer films. However, the poor waterproof and UV resistance properties of biopolymer films have limited their application in fruit packaging. In this work, a novel ta...

Full description

Saved in:
Bibliographic Details
Published inInternational journal of biological macromolecules Vol. 275; no. Pt 2; p. 133368
Main Authors Yu, Huanyang, Wang, Yan, Wang, Rundong, Ge, Yuan, Wang, Liyan
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.08.2024
Subjects
Biopolymer
Chitosan/gelatin
Silica
Superhydrophobic
Tannic acid
Tannic acid
Superhydrophobic
Silica
Biopolymer
Chitosan/gelatin
Online AccessGet full text

Cover

More Information
Summary:The environmental pollution caused by plastic films urgently requires the development of non-toxic, biodegradable, and renewable biopolymer films. However, the poor waterproof and UV resistance properties of biopolymer films have limited their application in fruit packaging. In this work, a novel tannic acid cross-linked chitosan/gelatin film with hydrophobic silica coating (CGTS) was prepared. Relying on the adhesion of tannic acid and gelatin to silica, the coating endows CGTS film with excellent superhydrophobic properties. Especially, the contact angle reaches a maximum value 152.6°. Meanwhile, tannic acid enhanced the mechanical strength (about 36.1 %) through the forming of hydrogen bonding and the network structure. The prepared CGTS films showed almost zero transmittance to ultraviolet light and exhibited excellent radical scavenging ability (∼76.5 %, DPPH). Hence, CGTS film is suitable as a novel multifunctional packaging material for the agriculture to protect premature fruits, or the food industry used in environments exposed to ultraviolet radiation and rainwater. •Tannic acid cross-linked chitosan/gelatin film with silica coating was prepared•The coating of fumed silica particles endowed the film with superhydrophobicity•Cross-linking of tannic acid improved mechanical strength and reduced swelling ratio.•CGTS films exhibited excellent antioxidant and UV-proof properties.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0141-8130
1879-0003
1879-0003
DOI:10.1016/j.ijbiomac.2024.133368