【摘 要】
：
A water-soluble polysaccharide (CPS-0) was obtained from the root of Cudrania tricuspidata (Carr.)Bur.,by hot water extraction (70℃),deproteination using enzym
【机 构】
：
School of Life Science,Shandong University,Jinan 250100,China“,”Shanghai Institute of Materia Medica
论文部分内容阅读
A water-soluble polysaccharide (CPS-0) was obtained from the root of Cudrania tricuspidata (Carr.)Bur.,by hot water extraction (70℃),deproteination using enzymolysis and Sevag method,precipitation with ethanol,and fractionation through DEAE-Sephadex A-50 chromatography.The purity of CPS-0 was determined by HPLC and the structure was elucidated by monosaccharide composition analysis,methylation analysis,GC,GC-MS,NMR spectral (1H-NMR,13C-NMR,HMQC),UV,IR,and elemental analysis.The CPS-0 was found to contain glucose residues only.The average repeating unit is a decasaccharide having a backbone consisting of 1,41inked α-D-glucopyranosyl residues to which the side chain consisting of terminal and 1,4-1inked α-D-glucopyranosyl residues was attached at position 6 of the branching residues.
其他文献
The reaction mechanism between isoquinoline and .OH radical in aqueous dilute solutions under different conditions was studied by pulse radiolysis. The main cha
什么是新闻形象?笔者认为:新闻形象,是指新闻事实所固有的外在的客观实体形象,它具有真实、具体、可感的性质。它的内容包括新闻事实中的人物、景物、环境、场面等一切有形
The analyses of the composition of a binary mixture composed of two kinds of industrial complicated materials have great importance for formulation in practice.
Nanometer MgO was prepared via a sol-gel auto-combustion technique using magnesium nitrate as raw material and citric acid as chelating agent.IR spectra of the
赤霉素(Gibbereilin)是一类重要的植物内源性激素,在植物生命活性中具有多种生理功能,包括种子萌发、茎和根的伸长、花和果实的发育等。研究表明,GA生物合成途径的上的基因对植株基因进行调控生长、发育、生育期都起到重要作用。内-贝壳杉烯氧化酶(KO1)和GA 2-氧化酶(GA2ox3)是赤霉素合成代谢途径中的两个关键酶,如GA2-氧化酶会将活性的GA转变成非活性的GA,将影响活性GA的合成代谢
An improved ion chromatographic (IC)method was developed to determine trace levels of perchlorate in environmental water samples.Perchlorate was separated in th
本文选取豫北浚县为试验点,收集整理DSSAT模型所需的各项资料,以田间试验为基础,应用DSSAT模型,设计冬小麦-夏玉米周年试验。首先应用DSSAT对浚麦K8和玉米品种黎乐66品种参数进行调试,并对农田土壤含水量、作物生物量、作物产量等指标模拟的结果进行了拟合性分析。利用验证后的模型分析了豫北浚县地区两种不同耕作制度下的农田水、碳、氮方面逐日的变化规律,以及不同时期农田水、碳、氮之间对产量及作物生
ZrWMoO8 powders with different morphologies were obtained using ammonium ttmgstate, molybdate tung-state and zirconium tungstate as the starting materials by de
Brefeldin A(BFA;C16H2404,MW 280),a naturally occurring macrolide,exhibits diverse biological activities,such as antibiotic,antiviral,cytostatic,antimitotic,and
Fe3+-doped TiO2 composite nanoparticles with different doping amounts were successfully synthesized using sol-gel method and characterized by X-ray diffraction