METHODS Based on chemical ( including sugar composition analysis methylation analysis uronic acid reduction and partial acid hydrolysis ) and spectral analysis ( IR NMR ESI-MS ) the structural characterization of SC3 was investigated .

方法利用化学方法（糖组成分析、甲基化分析、 糖 醛酸还原及部分酸水解）和光谱方法（IR，NMR，ESIMS）分析其结构特征。

An analytical experiment on eucalyptus was carried out . Apart from the substances extracted by hot water there were lignin pentosan hexosan resin and uronic acid in 1 % NaOH extracts .

对蓝桉原料进行了分析试验，蓝桉1%NaOH抽出物中除了溶出热水抽提出的物质外，还可溶出部分木素、戊聚糖、己 聚糖、树脂及 糖 醛酸等。

The content of neutral sugar uronic acid and protein was respectively 51.4 % 39.2 % and 4.45 % .

经测定RSPS1-3中中性糖含量为51.4%、 葡萄糖 醛酸 含量为39.2%、蛋白质含量为4.45%。

Similarly the monosaccharides of DFPA - ⅰ were identified to be mannose glucose galactose galacturonic acid at ratio 2.18 ∶ 1.00 ∶ 3.39 ∶ 1.82 ( in combination with determination of content of uronic acid ) .

DFPA-Ⅰ完全酸水解后纸层析及气相色谱分析（结合 糖 醛酸含量 测定）确定其糖基组成为甘露糖、葡萄糖、半乳糖、半乳糖醛酸摩尔比2.18∶1.00∶3.39∶1.82。

AJP-3 : relative molecular weight is 39 Da . It contains uronic acid of which quality percentage is 0.5046 % .

AJP-3：相对分子量为39638Da， 糖 醛酸含量为0.5046%。

Contained about 86.91 % of total sugar with 80.48 % uronic acid ; main chain maded up of - linkage ;

总糖含量为86.91%， 糖 醛酸 含量为80.48%，以β-型糖苷键为主键的蛋白结合多 糖；

Methods : The standard curves interference curves and equations ware established to calculate the contents of neutral sugar and uronic acid .

方法：通过 制 备 葡萄糖 醛酸 和 葡萄糖的标准曲线和相互干扰曲线，联立方程来计算 糖 醛酸和中性糖含量。

Objective To investigate neutral saccharide composition in a soluble tea polysaccharide and their influence on determination of the uronic acid content in order to determine it accurately .

目的研究一种水溶性茶多糖中的中性糖组成及其对 糖 醛酸 含量测定的影响，为准确测定茶多糖中糖 醛酸 含量 提供 参考 依据。

The main components of EPS are polysaccharide protein nucleic acid fatty acid uronic acid and so on .

其主要包括多糖、蛋白质、核酸、脂肪酸、 糖 醛酸等。

The compostion of ECP are mainly sugar and uronic acid Discussion on the proportion of three acid components in sour brewing products

ECP中的主要成分为糖和 糖 醛酸 。酸味酿造产品中三酸比例评析

Conclusion The six components were identified to be homogeneous polysaccharide-protein complexes which were composed of sulfate radical and uronic acid .

结论这6个组分为均一组分，均为含有硫酸基和已 糖 醛酸的糖蛋白。

AJP-1 : relative molecular weight is 101 Da . The content of uronic acid in AJP-1 is the highest quality percentage reached 1.1170 % .

AJP-1：相对分子量为101291Da， 糖 醛酸的含量是样品中最高的，含量为1.1170%。

Spectrophotometric Determination of Uronic Acid of Non-Starch Polysaccharides in Bean Products

豆类中非淀粉多糖组分 糖 醛酸的分光光度法测定

After the AAP is degraded by ultrasonic radiation and along with the increase of time its viscosity reduces gradually dissolving quality increases and the content of glucose uronic acid keeps constant .

黑木耳多糖经超声波辐射降解后，随时间的增加，黏度逐步降低、溶解性增加，葡萄糖 醛酸 含量基本保持不变。

An Improved Method for the Quantitative Determination of Uronic Acid

一种改良的 糖 醛酸含量测定方法

Results Content of total sugars sulfate uronic acid and amino sugars of polysaccharides from ten kinds of sea cucumbers fluctuated within 40.33 % ~ 62.11 % 19.54 % ~ 29.95 % 9.85 % ~ 13.38 % and 4.92 % ~ 10.18 % respectively .

结果10种海参多糖的总糖、硫酸根、 糖 醛酸和氨基糖含量的波动范围分别为40.33%~62.11%，19.54%~29.95%，9.85%~13.38%和4.92%~10.18%。

Objective : To establish a simple rapid accurate method for the determination of uronic acid and neutral sugar in acidic polysaccharides .

目的：建立一种操作简单、快速、准确地测定酸性多糖 中糖 醛酸和中性糖含量的方法。

The results showed that : there were very significant differences of extraction rate of tea polysaccharides and the contents of neutral sugar uronic acid protein polyphenol of each crude polysaccharide among 69 breeds it illustrated that the breeds diversity of tea polysaccharides was clear .

结果表明：不同茶树品种多糖的提取率以及各多糖中的中性糖、 糖 醛酸、蛋白质和茶多酚含量均存在极显著差异，说明茶多糖具有很强的品种多样性。

The purity of the main components of ODPs isolated by Gel chromatography was high they were composed of 5 kinds of monosaccharides at least and their contents of uronic acid were high . Their structure should be studied further on the basis of this thesis .

凝胶层析得到的ODPs各组分纯度高，至少由5种单糖组成， 糖 醛酸含量较高，其结构需进一步研究。

Heparin and heparan sulfate are linear polysaccharides consisting of repeating disaccharide units of uronic acid –( 1 4 ) - D-glucosamine .

肝素和硫酸乙酰肝素是由 糖 醛酸一（1&4）一D一氦基葡萄糖的重复二糖单元组成的线性多糖。

Meanwhile cartilage GAG production increased manifested as the increases of cartilage ~ ( 35 ) S w_1820 incorporation and cartilage uronic acid level .

软骨糖胺多 糖 合成 代谢增强，表现为软骨~（35）Sw_1844掺入率升高和软骨组织 糖 醛酸 含量增加；

Physico-chemical characteristics analysis indicated that two polysaccharides do not contain monosaccharose uronic acid protein and polyphenols . Therefore it can be concluded that they are non-starch neutral pure polysaccharides .

经过理化性质鉴定分析发现两种菌类食物活性多糖中都不含游离单糖、 糖 醛酸、蛋白质、多酚类物质等，均为非淀粉类中性纯粹多糖。

Uronic acid can be synthesized by oxidation of monosaccharide .

目前 糖 醛酸的合成 主要是以单糖为原料氧化而得。

Quantitative Determination of Uronic Acid in MCP

MCP 中糖 醛酸的含量测定