Preparation, characterization and antibacterial activity of biodegradable films prepared from carrageenan

學生姓名: 馬晨瀚
指導教授: 江孟燦
學期: 107下
摘　　要: Carrageenan films have been formulated as a pack-
aging material. Films plasticized with glycerol were loaded

with citric acid (1, 0.75, 0.5, 0.25 and 0.1 %) for enhanced
antimicrobial effects. Blank and citric acid loaded films were
characterized by mechanical properties, scanning electron

microscopy and contact angle. In addition, swelling and anti-
bacterial studies were conducted to further characterize the

films. Both blank and citric acid loaded films showed different
morphology, high elasticity and acceptable tensile
(mechanical) properties. These citric acid loaded films
produced higher zones of inhibition against
Staphylococcus aureus, Proteus mirabilis, Pseudomonas
aeruginosa, Escherichia coli and Dickeya chrysanthemi
strains compared to blank film.