Far Eastern New Century Corporation

Chun-Yi Li

Ken-Yuan Chang

Chia-Chang Liu

Chih-Ta Lee

Ying-Nan Tsai

Yong-Yi Wu

Lin-Chien Yu

A mouthwash composition comprises water and a modified polyglutamic acid composed of a plurality of segment A and a plurality of segment B randomly arranged, in which, the segment A has a formula I:  

Mouthwash composition

A water-soluble and biodegradable antimicrobial agent is provided, comprising a polymer composed of a segment A and a segment B, in which, the segment A has the following formula I: the segment B has the following formula II: wherein the segment A and the segment B in the polymer have a molar ratio of 1:0.007-1.2, and n is 0 or 1, m is an integer of 0-2, m+n&#x2260;0, X is H, Na, K, NH, &#xbd;Ca, or &#xbd;Mg, and Y is Cl, Br, or I.

Water-soluble and biodegradable antimicrobial agent

A teeth-whitening gel is provided. The main ingredient of the teeth-whitening gel comprises a polypeptide having halamine (N&#x2014;X bond, X&#x2550;Cl, Br or I) groups and a high molecular weight. By the redox properties of halamine group, the gel contacting with the teeth's surface can bleach and whiten the teeth.

Teeth-whitening gel

A method of preparing a water-soluble and biodegradable antimicrobial agent is provided. The method includes treating a polypeptide compound with sodium hypochlorite for at least 1 min, such that the polypeptide compound has at least one N-halamine group and has good antimicrobial effect. By using the method of the present invention, a chemical synthesis process is not required and an organic solvent is not required either, and thus, an antimicrobial agent having high water solubility, biodegradability, non-toxicity, good sterilization effect, and regeneration can be prepared with reduced harms to the environment.

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Zhongli, Taiwan

Chun-Yi Li