The mechanical and biological properties of chitosan films need to improve.This paper aims to prepare three kinds of phenolic acid-grafted-chitosan with similar grafting rates, and then prepare composite films.The physical properties, bioactivities, and preservation application of the films were evaluated.Results showed that the grafting of phenolic acids with chitosan decreased the moisture content and water vapor permeability and increased the opacity, water-solubility, tensile strength, elongation at break, Young’s modulus, antioxidant, and antimicrobial activities of chitosan film.Caffeic acid-grafted-chitosan (CA-g-CS) film exhibited better above-mentioned properties than p-coumaric acid/ferulic acid-grafted-chitosan films, which may be caused by the phenomenon that there were two phenolic hydroxyl groups in caffeic acid.Meanwhile, CA-g-CS film could more effectively retard weight loss, pH increase, volatile base nitrogen accumulation, and microbial growth of Penaeus vannamei during storage.Our work revealed that the preservative of phenolic acid-grafted-chitosan films’ effect on P.vannamei and its properties were significantly influenced by the position and number of hydroxyl groups in phenolic acids.
HUANG Chen
,
LIU Weijia
,
XIE Jing
,
LI Li
,
XUE Bin
,
LI Xiaohui
,
SHAO Zehuai
,
BIAN Xiaojun
,
SUN Tao
. Effects of phenolic acid-grafted-chitosan on the properties and preservation of chitosan film[J]. Food and Fermentation Industries, 2022
, 48(19)
: 162
-168
.
DOI: 10.13995/j.cnki.11-1802/ts.032180
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