Structural characterization and antioxidant properties of an exopolysaccharide produced by the mangrove endophytic fungus Aspergillus sp Y16

被引：158

作者：

Chen, Yin ^{[1
]}

Mao, Wenjun ^{[1
,2
]}

Tao, Hongwen ^{[1
]}

Zhu, Weiming ^{[1
]}

Qi, Xiaohui ^{[1
]}

Chen, Yanli ^{[1
]}

Li, Hongyan ^{[1
]}

Zhao, Chunqi ^{[1
]}

Yang, Yupin ^{[1
]}

Hou, Yujiao ^{[1
]}

Wang, Chunyan ^{[1
]}

Li, Na ^{[1
]}

机构：

[1] Ocean Univ China, Inst Marine Drug & Food, Minist Educ, Key Lab Marine Drugs, Qingdao 266003, Peoples R China

[2] Ocean Univ China, Shandong Prov Key Lab Glycosci & Glycotechnol, Qingdao 266003, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2011年 / 102卷 / 17期

基金：

中国国家自然科学基金;

关键词：

Mangrove endophytic fungus; Aspergillus sp Y16; Exopolysaccharide; Structure; Antioxidant property; CELL-WALL MANNAN; POLYSACCHARIDE; YEAST; AUTOXIDATION; ELUCIDATION; STRAIN;

D O I：

10.1016/j.biortech.2011.06.048

中图分类号：

S2 [农业工程];

学科分类号：

082806 [农业信息与电气工程];

摘要：

A homogeneous exopolysaccharide, designated As1-1, was obtained from the culture medium of the mangrove endophytic fungus Aspergillus sp. Y16 and purified by anion-exchange and gel-permeation chromatography. Results of chemical and spectroscopic analyses, including one- and two-dimensional nuclear magnetic resonance (1D and 2D NMR) spectroscopy showed that As1-1 was mainly composed of mannose with small amounts of galactose, and that its molecular weight was about 15 kDa. The backbone of As1-1 mainly consists of (1 -> 2)-linked alpha-D-mannopyranose units, substituted at C-6 by the (1 -> 6)-linked alpha-D-mannopyranose, (1 ->)-linked beta-D-galactofuranose and (1 ->)-linked beta-D-mannopyranose units. As1-1 possessed good in vitro antioxidant activity as evaluated by scavenging assays involving 1,1-diphenyl-2-picrylhydrazyl (DPPH) and superoxide radicals. The investigation demonstrated that As1-1 is an exopolysaccharide different from those of other marine microorganisms, and could be a potential antioxidant and food supplement. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：8179 / 8184

页数：6

共 28 条

[1]

A MODIFIED URONIC ACID CARBAZOLE REACTION [J].