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|Title: ||Antibacterial effect of N-sulfonated and N-sulfobenzoyl chitosan and its application to oyster preservation|
|Authors: ||Chen Chee-Shan;Liau Wan-Yu;Tsai Guo-Jane|
|Issue Date: ||2012-04-26T06:07:47Z
|Publisher: ||Journal of Food Protection|
|Abstract: ||Abstract:The antibacterial effects of sulfonated and sulfobenzoyl chitosans were evaluated and compared with that of 69% deacetylated chitosan (DD69 chitosan). Minimal inhibitory concentrations of sulfonated chitosan (SCI, 0.63% sulfur content) against Shigella dysenteriae, Aeromonas hydrophila, Salmonella typhimurium, and Bacillus cereus were found to be lower than those of DD69 chitosan. A high sulfur content in sulfonated chitosan adversely influenced its antibacterial effect. Sulfobenzoyl chitosan (SBC) has excellent water solubility and an antibacterial effect comparable to that of SCI. SBC at 1,000 and 2,000 ppm extended the shelf life of oysters at 5°C by 4 days at the former or by 7 days at least at the latter concentration. The growth of coliforms and Pseudomonas, Aeromonas, and Vibrio species on oysters was retarded by the addition of DD69 chitosan or SBC.|
|Relation: ||61(9), pp.1124-1128|
|Appears in Collections:||[食品科學系] 期刊論文|
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