Study on Antimicrobial Capability of Chitosan-Zn Complex and Chitosan

Abstract

Abstract: One kind of chitosan-Zn complex was synthesized in this research, antimicrobial effect of the synthesized chitosan-Zn and the chitosan were tested under different pH condition, and the lowest antimicrobial concentration of the chitosan-Zn complex, sodium benzoate and sorbic acid potassium to Eschetichia coli(ATCC8099), Staphlococcus aureaus(ATCC6538), Bacillus subtilis(ATCC9372), Candida albicans(ATCC10231), Aspergillus niger(ATCC16404) were compared. The results showed that the antimicrobial effects of chitosan-Zn complex enhanced greatly and that were equivalent to sodium benzoate and sorbic acid potassium, but the antifungal effect of chitosan-Zn complex were some lower. Simultaneously systematic pH had tremendous influence to the antimicrobial effect of chitosan-Zn complex and chitosan, the antimicrobial effects were better under acidicc ondition.

Key words: chitosan-Zn, antimicrobial effect, sodium benzoate, potassium sorbate

WU Hui-qing,WU Qing-ping*,SHI Li-san,CHENG Wei,ZHANG Ju-mei. Study on Antimicrobial Capability of Chitosan-Zn Complex and Chitosan[J]. FOOD SCIENCE, 2006, 27(12): 75-78.

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Study on Antimicrobial Capability of Chitosan-Zn Complex and Chitosan

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