Antibacterial and Antioxidant Properties of N-Carboxyethyl ChitosanReport as inadecuate




Antibacterial and Antioxidant Properties of N-Carboxyethyl Chitosan - Download this document for free, or read online. Document in PDF available to download.

chitosan is the only alkaline natural polysaccharide, which expresses good bioactivities. In this paper, chitosan was modified with pyruvic acid to get N-carboxyethyl chitosan N-CE-CTS which was supposed to have better solubility and bioactivities than chitosan. N-CE-CTS with DS 40.1% dissolves in water. Antioxidant activity was measured with electron spinning resonance ESR. The results show that N-CE-CTS has better antioxidant activity than chitosan. The antioxidant activity of 2 mg-mL N-CE-CTS and chitosan is 35.0% and 30.1%, respectively. N-CE-CTS has good antibacterial activity against Staphylococcus aureus and Escherichia coli. However antibacterial activity of N-CE-CTS is a little lower than that of chitosan. Antioxidant and antibacterial activity of N-CE-CTS and chitosan increase with the increase of concentration of N-CE-CTS and chitosan.

KEYWORDS

chitosan, N-carboxyethyl chitosan, antioxidant activity, antibacterial activity

Cite this paper







Author: Chang-jiang Yu, Qiang Lin, Wen Yuan, Fang Liu

Source: http://www.scirp.org/



DOWNLOAD PDF




Related documents