标题：Antioxidant and antimicrobial activity of xylan-chitooligomer-zinc complex作者：Wu, Shuping;Du, Yumin; Hu, Yunzi; Shi, Xiaowen; Zhang, Lina
来源出版物：FOOD CHEMISTRY 卷：138 期：2-3 页：1312-1319 出版年：MAY 15 2013
摘要：In this study, a ternary complex based on natural polysaccharides was explored as a novel food preservative. Chitooligomer was obtained by enzyme hydrolysis of chitosan with immobilised neutral protease, and the degree of polymerisation (DP) was mainly from 2 to 5. Chitooligomer-zinc complex (CGZC) was first produced and then co-heated with xylan to prepare xylan-chitooligomer-zinc complex (XCGZC). XCGZC showed higher antioxidant and antibacterial activity than chitooligomer, chitooligomer-zinc and xylan-chitooligomer. The IC50 of XCGZC was 537 mg/mL, which was equal to the antioxidant ability of 3.28 mg/mL BHT. The diameter of the inhibition zone for XCGZC against Escherichia coli and Staphylococcus aureus was 17.2 +/- 0.4 and 30.3 +/- 0.6 mm vs. control of 6.0 mm. Besides, XCGZC had excellent antibacterial activity against Bacillus subtilis, Salmonella typhimurium, Bacillus megaterium. Therefore, XCGZC can be used as a novel promising preservative with antibacterial and antioxidant properties in the food industry.
作者关键词：Hemicellulose, Xylan, Chitooligomer, Maillard reaction, Antioxidant, Antimicrobial, Complex
扩展关键词：DIFFERENT MOLECULAR-WEIGHTS; MAILLARD REACTION; ANTIBACTERIAL ACTIVITY; CHITOSAN OLIGOMERS; IN-VITRO; HEMICELLULOSE; FLUORESCENCE; DERIVATIVES; EXTRACTION; HYDROGELS
通讯作者地址：Wuhan Univ, Coll Resource & Environm Sci, Wuhan 430079, Peoples R China.
电子邮件地址：Du, Yumin;email@example.com; firstname.lastname@example.org
[Wu, Shuping; Du, Yumin; Hu, Yunzi; Shi, Xiaowen] WuhanUniv, Coll Resource & Environm Sci,Wuhan430079, Peoples RChina.
[Wu, Shuping; Zhang, Lina]WuhanUniv, Coll Chem & Mol Sci,Wuhan430072, Peoples RChina.
研究方向：Chemistry; Food Science & Technology; Nutrition & Dietetics
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