检索结果-南通市图书馆

Structural study on a bioactive fructan from the root of Achyranthes bidentata Blume

Chinese Journal of Chemistry 1995年第6期13卷 539-544页

作者： Yu, BA Tian, GY Hui, YZ CHINESE ACAD SCI SHANGHAI INST ORGAN CHEMSTATE KEY LAB BIOORGAN & NAT PROD CHEMSHANGHAI 200032PEOPLES R CHINA

The structure of a saccharide component (Abs), with pronounced activity of improving immunity system, isolated from the root of Achyranthes bidentata Blume, a traditional Chinese herbal medicine, was studied. Based on C-13 NMR, HPLC, and methylation analyses, Abs was shown to be a mixture of short-chain fructans with an average dp of 8, containing more (2-->B) than (2-->1) linked beta-D-fructofuranosyl residues, with branching at O-6 or O-1 of 18% of the D-fructofuranosyl residues.

关键词： structure fructan Abs methylation analysis

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Structural analysis of an Oligosaccharide and Glycopeptide Mixture from Panax Ginseng Root with Inhibition SHP-1 Function

引用

Chemical Research in Chinese Universities 2011年第1期27卷 104-107页

作者： WANG Ying GAO Qi-pin LI Gui-rong CHEN Ying-hong LUO Hao-ming GAO Yang JIANG Rui-zhi College of Light Industry and Food South China University of Technology Guangzhou 510641 P R. China Center for New Medicine Research Changchun University of Chinese Medicine Changchun 130117 P R. China School of Pharmacy Yanbian University Yanji 133000 P. R. China Academy of Chinese Medicine and Material Medica of Jilin Province Changchun 130021 P R. China

A mixture of oligosaccharide and glycopeptide was isolated from the aqueous extract of Panax ginseng roots. The mixture inhibits protein tyrosinc phosphatase（SHP-1） function, implying it enhances immune activity. The peak molecular mass of the oligosaccharide portion is 1800 calculated via GPC software after separation by HPLC. And the structure of the oligosaccharide portion is the backbone of （1→3）- and （1→4）-linked arabinopyranoside, and （1→4）- and （1→6）-linked glucopyranoside, with non-reducing terminals of arabinopyranoside and glucopyranoside. The peak molecular mass of glycopeptide portion is 1900 calculated via GPC software after separation by HPLC. The structure of glycopeptide portion is the backbone of （1→3）- and （1→4）-linked arabinopyranoside, and （1→3,6）-linked glucopyranoside, with non-reducing terminals of galactopyranose and glucopyranoside. The peptide composition is Glu. Asp, Hyp, Set, Arg, Gly , Thr, Pro, Ala, Val, lie, Leu and Lys. The oligosaccharide-peptide linkage is formed by Ara and Hyp.

关键词： Panax ginseng Oligosaccharide Glycopeptide Protein tyrosine phosphatase(SHP-1) methylation analysis

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

The Novel Pyruvated Glucogalactan Sulfate Isolated from the Red Seaweed, Hypnea pannosa

引用

Advances in Biological Chemistry 2016年第3期6卷 114-125页

作者： Masakuni Tako Rintaro Ohtoshi Kazutaka Kinjyo Shuntoku Uechi Department of Subtropical Bioscience and Biotechnology University of the Ryukyus Okinawa Japan Health and Longevity Research Laboratory Integrated Innovation Research Center University of the Ryukyus Okinawa Japan

The polysaccharide was isolated from Hypnea pannosa which was grown in Okinawa, Japan. The yield of the polysaccharide was 17.2%, and the total carbohydrates, pyruvic acid, sulfuric acid and ash contents were 55.2%, 3.8%, 35.2% and 24.3%, respectively. 3,6-Anhydro-α-D-galactose, β-D-galactose, α-D-galactose and D-glucose were identified by liquid and thin-layer chromatography. Fourier transform infrared (FTIR) spectra of the polysaccharide resembled that of ι-carrageenan. From the 1H- and 13C-NMR spectra, 1,3-linked β-D-galactose, 1,4-linked anhydro-α-D-galactose, 1,4-linked α-D-galactose, 1,4-linked β-D-glucose and pyruvic acid (carboxyl acetal, methyl proton and methyl carbon) were assigned. methylation analysis revealed terminal D-galactose 0.1 mol), 1,4-linked D-glucose (1.0 mol) and 1,2,3,4,6-linked D-galactose (3.7 mol) for native polysaccharide, and terminal D-galactose, 1,4-linked D-galactose (1.9 mol), 1,4-linked D-glucose (1.0 mol), 1,3- linked D-galactose (1.7 mol), and 1,3,4,6-linked D-galactose (0.3 mol) which substituted with pyruvate group at 4 and 6 positions for desulfated polysaccharide. The polysaccharide was the novel pyruvated glucogalactan sulfate, the structure of which was proposed.

关键词： Hypnea pannosa Pyruvated Glucogalactan Sulfate 1H- and 13C-NMR Analy-sis methylation analysis Chemical Structure

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：