期刊
BIORESOURCE TECHNOLOGY
卷 288, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2019.121596
关键词
Endophytic fungus; Antibacterial activity; Polysaccharides; Immunomodulatory activity; Dendrobium officinale
资金
- National Natural Science Foundation of China [21676104, 21878105]
- National Key Research and Development Program of China [2018YFC1603400, 2018YFC1602100]
- Science and Technology Program of Guangzhou [201904010360]
In this study, the primary antibacterial ingredients in Fusarium solani DO7 were confirmed as polysaccharides. After purification, two polysaccharides, DY1 and DY2, exhibited excellent antibacterial activity, especially to S. aureus and E. coll. Moreover, the glycosidic linkages of DY1 were composed of (1 -> )-alpha-D-Glcp, (1 -> 3)-beta-L-Rhaf, (1 -> 4)-beta-D-Xylp, (1 -> 6)-alpha-D-Glcp, (1 -> 2,6)-alpha-D-Glcp and (1 -> 2)-beta-D-Galp; while the glycosidic linkages of DY2 contained (1 -> )-beta-D-Glcp, (1 -> 2)-alpha-L-Rhaf, (1 -> 3)-alpha-L-Araf, (1 -> 4)-beta-D-Glcp, (1 -> 4,6)-beta-D-Glcp and (1 -> 3)-alpha-D-Galp. Additionally, DY1 and DY2 possessed nontoxicity to RAW 264.7 cells. Both polysaccharides could significantly promote the levels of TNF-alpha, IL-6 and NO by activating TNF-alpha, IL-6 and iNOs mRNAs expression. These results indicated that DY1 and DY2 had great potential as a food preservative and immunomodulatory agent.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据