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Preparation of Antibacterial Agent using Alginate and Its Antibacterial Effect  

이학성 (울산대학교 생명화학공학부)
서정호 (울산과학대학 환경공업화학과)
Publication Information
KSBB Journal / v.17, no.1, 2002 , pp. 63-67 More about this Journal
Abstract
Silver-alginate and copper-alginate were prepared with Na-alginate extracted from marine brown algae(Sargassum fluitans). The antibacterial effect of Ag-alginate or Cu-alginate against Staphylococcus aureus and Escherichia coli was carried out by measuring optical density of liquid culture at 600 nm. The cell growth of Staphylococcus aureus and Escherichia coli was very active at pH 7, and was inhibited by adding Ag-alginate with more than 0.006 wt.% of silver content. The antibacterial effect of Ag-alginate against S. aureus and E. coli was better than that of Cu-alginate at the same metal concentration. The cell growth of S. aureus was less inhibitory than E. coli at the same concentration of Ag-alginate. The cell growth of S. aureus and E. coli was also influenced by the characteristics of counter ion of silver.
Keywords
silver-alginate; antibacterial agent; Escherichia coli; Staphylococcus aureus;
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