title: The properties of antimicrobial films derived from poly(lactic acid)/starch/chitosan blended matrix.
abstract: An antimicrobial material with a slow release property was developed based on poly(lactic acid)/starch/chitosan blends, in which chitosan acted as an antimicrobial agent while PLA and starch together were used as a slow-releasing device. An increase in the starch content drastically improved the hydrophilicity of the blends, which was favorable for the diffusion of the embedded chitosan. Moreover, the release of chitosan was observed to occur in two stages, with a very fast release stage initially and a slow but durable release stage as the latter. These two stages exhibited the effectiveness and long residual action of antimicrobial property of the blends respectively, demonstrating the suitability to be used for foods with high water activity, such as fresh meat. The tensile and thermal properties further verified the promising use of the blend material in packaging.
authors.affiliation: ERCSPP, College of Light Industry and Food Sciences, South China University of Technology, Guangzhou 510640, China.
authors.forename: Pingping
authors.initials: P
authors.lastname: Bie
authors.forename: Peng
authors.initials: P
authors.lastname: Liu
authors.forename: Long
authors.initials: L
authors.lastname: Yu
authors.forename: Xiaoxi
authors.initials: X
authors.lastname: Li
authors.forename: Ling
authors.initials: L
authors.lastname: Chen
authors.forename: Fengwei
authors.initials: F
authors.lastname: Xie
mesh_terms: D000890:Anti-Infective Agents / Q000737:chemistry* / Q000494:pharmacology*; D048271:Chitosan / Q000737:chemistry*; D018857:Food Packaging; D057927:Hydrophobic and Hydrophilic Interactions; D019344:Lactic Acid / Q000737:chemistry*; D011091:Polyesters; D011108:Polymers / Q000737:chemistry*; D013213:Starch / Q000737:chemistry*; D013696:Temperature; D013718:Tensile Strength
chemical_list: D000890:Anti-Infective Agents; D011091:Polyesters; D011108:Polymers; D019344:Lactic Acid; C033616:poly(lactide); D013213:Starch; D048271:Chitosan
keywords: Antimicrobial packaging; Poly(lactic acid)/starch/chitosan blends; Slow release property