Korean Journal of Food Science and Technology (한국식품과학회지)
- Volume 32 Issue 1
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- Pages.218-224
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- 2000
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- 0367-6293(pISSN)
Antimicrobial Effects of Chitosans on Escherichia coli 0157 : H7, Staphyloccus aureus and Candida of albicans
Escherichia coli O157 : H7, Staphyloccus aureus 및 Candida albicans에 대한 키토산의 항균 효과
- Oh, Se-Wook (Korea Food Research Institute) ;
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Hong, Sang-Pill
(Korea Food Research Institute) ;
- Kim, Hyun-Jung (Korea Food Research Institute) ;
- Choi, Yong-Jin (Graduate School of Biotechnology, Korea University)
- Published : 2000.02.28
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55 12
Abstract
The antimicrobial activities of chitosan oligosaccharide(chitohexaose) and two types of chitosans M.W.(10,000 and M.W. 100,000) were examined against Escherichia coli O157 : H7(ATCC 43894), Staphylococcus aureus(ATCC 144458) and Candida albicans(KFRI 432). Chitosan with molecular weight of 10,000 showed the strongest antimicrobial activities to E. coil O157 : H7 and S. aureus, whereas chitohexaose acted most strongly against C. albicans. The most effective concentration of chitosan was measured to be 0.1 mg/mL for E. coil O157 : H7 and S. aureus, and that of chitohexaose to be 1 mg/mL for C. albicans. Antimicrobial activities of chitosans and chitohexaose were maintained for 60 min after their treatment. They were found to induce leakage of intracellular proteins and nucleic acids from treated microorganisms. The efflux determined by assaying the
Keywords
antimicrobial activity;chitosan oligosaccharide;chitosan