Molecular, Genetic, and Biochemical Nutrition Commons^™

The Antimicrobial, Mechanical, Physical And Structural Properties Of Chitosan-Gallic Acid Films, Xiuxiu Sun, Zhe Wang, Hoda Kadouh, Kequan Zhou

Nutrition and Food Science Faculty Research Publications

Chitosan films incorporated with various concentrations of gallic acid were prepared and investigated for antimicrobial, mechanical, physical and structural properties. Four bacterial strains that commonly contaminate food products were chosen as target bacteria to evaluate the antimicrobial activity of the prepared gallic acid-chitosan films. The incorporation of gallic acid significantly increased the antimicrobial activities of the films against Escherichia coli, Salmonella typhimurium, Listeria innocua and Bacillus subtilis. Chitosan films incorporated with 1.5 g/100 g gallic acid showed the strongest antimicrobial activity. It was also found that tensile strength (TS) of chitosan film was significantly increased when incorporating …