Chitosan/zein-based sustained-release composite films: Fabrication, physicochemical properties and release kinetics of tea polyphenols from polymer matrix.
Int J Biol Macromol
; 269(Pt 2): 131970, 2024 Jun.
Article
em En
| MEDLINE
| ID: mdl-38697413
ABSTRACT
This study investigated the properties of chitosan/zein/tea polyphenols (C/Z/T) films and analyzed the release kinetics of tea polyphenols (TP) in various food simulants to enhance the sustainability and functionality of food packaging. The results revealed that TP addition enhanced the hydrophilicity, opacity and mechanical properties of film, and improved the compatibility between film matrix. 1.5â¯% TP film showed the lowest lightness (76.4) and the highest chroma (29.1), while 2â¯% TP film had the highest hue angle (1.5). However, the excessive TP (above 1â¯% concentration) led to a decrease in compatibility and mechanical properties of film. The TP concentration (2â¯%) resulted in the highest swelling degree in aqueous (750.6â¯%), alcoholic (451.1â¯%), and fatty (6.4â¯%) food simulants. The cumulative release of TP decreased to 16.32â¯%, 47.13â¯%, and 5.87â¯% with the increase of TP load in the aqueous, alcoholic, and fatty food simulants, respectively. The Peleg model best described TP release kinetics. The 2â¯% TP-loaded film showed the highest DPPH (97.13â¯%) and ABTS (97.86â¯%) free radical scavenging activity. The results showed TP release influenced by many factors and obeyed Fick's law of diffusion. This study offered valuable insights and theoretical support for the practical application of active films.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Chá
/
Zeína
/
Embalagem de Alimentos
/
Quitosana
/
Polifenóis
Idioma:
En
Revista:
Int J Biol Macromol
Ano de publicação:
2024
Tipo de documento:
Article