M., Maizura and A., Fazilah and M. H., Norziah and Karim, A. A. (2008) Short Communication Antibacterial Activity of Modified Sago Starch-Alginate Based Edible Film Incorporated with Lemongrass (Cymbopogon Citratus) Oil. International Food Research Journal, 15 (2). pp. 233-236. ISSN 1985-4668
Antibacterial effect of modified sago starch-alginate edible film incorporating lemongrass oil at various concentrations was studied. Edible films were prepared from a mixture of modified sago starch and alginate. Lemongrass oil (0.1 - 0.4%, v/w) and glycerol (0 and 20%, w/w) were incorporated in the films to act as natural antimicrobial agent and plasticizer, respectively. The films were characterized for antibacterial activity against food pathogenic bacteria such as Escherichia coli O157:H7, Salmonella Enteritidis and Staphylococcus aureus. The edible film exhibited antibacterial activity against Escherichia coli O157:H7 and Salmonella Enteritidis by using agar diffusion assay method. For films tested against Escherichia coli O157:H7, the zone of inhibition increased significantly (p < 0.05) with addition of lemongrass oil at all levels both in the presence and absence of glycerol. The films also significantly (p < 0.05) inhibited the growth of Salmonella enteritidis only with 0.4% lemongrass oil (in the presence and absence of glycerol). However, the films containing lemongrass oil did not show any inhibition effect on Staphylococcus aureus.
|Faculty or Institute:||Faculty of Food Science and Technology|
|Deposited By:||Yusfauhannum Mohd Yunus|
|Deposited On:||26 Nov 2008 20:22|
|Last Modified:||02 Apr 2010 08:24|
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