糖苷键

然后采用化学反应识别、红外谱图和核磁共振谱图对H标物质的结构和类型进行出探讨发现目标物质可能是属于缩合鞣质类化合物，并带有糖苷键。

NMR and IR spectra to study the structure and type of target substances found target material may belong to the condensation tannin compounds , with a glycosidic bond .

该酶对人参皂苷Rb1糖键进行有选择的水解，可水解人参皂苷Rb1C20位的一个糖苷键生成人参皂苷Rd。

The ginsenoside-Rb_1 hydrolase could only hydrolyze the glycosidic bond at the C_ 20 position of ginsenoside-Rb_1 into ginsenoside-Rd .

DNA中糖苷键碱基侧二共价键的喇曼特性分析

On the Raman Characteristics of Covalent Bonds Flanked to the Glycoside Bond in DNA Purine Base

其￣1HNMR数据显示出糖苷键的构型。

The configuration of oligosaccharide linkage was clearly shown by ￣ 1H NMR data .

经UV、IR和1H-NMR分析可知，三种多糖为β-糖苷键连接的吡喃环多糖。

UV , IR and 1H-NMR analysis , the three fractions of polysaccharide are β - glycosidic linkage of the pyran ring polysaccharide .

环状糊精（cyclodextrin，简称CD）是由D-吡喃葡萄糖基以α-1，4葡萄糖苷键连接成的环状低聚糖。

Cyclodextrin ( CD ) is a kind of ring oligose . It is connected by α - 1,4 glucoside linkage with D - glucopyranose .

红外光谱分析表明POPⅡ具有典型的多糖吸收峰，结构中存在β-型糖苷键。

The analysis result of IR spectra of POP ⅱ showed that there were characteristic absorption bands of polysaccharide and β - glycoside linkage in its structure .

酸性α-淀粉酶可在低pH条件下以随机方式切断淀粉分子内的α-1,4-糖苷键，能满足一些酸性条件下淀粉原料的深加工工艺要求。

In low pH condition , acid alpha-amylase cuts off the starch molecule randomly within the alpha-1,4-glycosidic bond under acidic conditions to meet some of the deep processing of raw starch process requirements .

经13C-NMR分析和比较，表明所得到的聚唾液酸是一种-α2,8糖苷键连接的同聚物。

The polysialic acid in E. coli K-235 was identified as α - 2,8 glycosidic linkage homopolymer of N-acetyl-neuraminic acid .

本文用Ami法计算研究了2-（对甲氧苯基）-亚氨基哌啶-糖苷键水解过渡类似物电子结构。

The systematical calculation studies on the electronic structures of 2 - ( P - Methoxyphenyls ) - Imino-piperidine-a transition state analogue in hydrolysis of glycoside bond were made by using Ami method .

经红外光谱与NMR分析，四种多糖级分主要含α-糖苷键，PGF-2还含有少量β-糖苷键。

Infrared spectra and nuclear magnetic resonance analysis showed 4 fractions mainly contained a - glucosidic bonds , PGF-2 also contained B - glucosidic bonds .

大麦极限糊精酶（LD，EC3.2.1.41）是麦芽中淀粉水解的重要酶类之一，主要负责催化支链淀粉和极限糊精内部的-α1,6-D糖苷键；

The starch debranching enzyme limit dextrin ase ( LD , EC 3.2.1.41 ) is one of the key enzymes in malting , which catalyses the hydrolysis of α - 1,6-D-glucosidic bonds in amylopectin and limit dextrin .

红外光谱揭示PGF-1含β-型糖苷键。

IR spectrum of PGF-1 revealed that it contained β - glucosidic bonds .

GTs家族是一个超家族，根据GTs的底物特异性和序列同源性以及糖苷键立体化学性质进行分类，GTs可划分为91个家族。

GTs was a super-family . GTs are classified into 91 sub-families according to the specificity of substrate , sequence relatedness and the stereochemistry of glycosidic linkage .

花色素苷（anthocyanin）广泛存在于开花植物中，是一类重要的水溶性的类黄酮化合物，是花色素（anthocyanidin）与各种单糖通过糖苷键结合形成的糖基化衍生物的总称。

Anthocyanin , a kind of important soluble flavonoid compound including glycosylation derivates of anthocyanidin through combining different monosaccharide with glucosidic bond , can be produced by a wide range of flowering plants .

可德胶（Curdlan）是一种由微生物发酵产生的多糖，其线性大分子结构全部由（1→3）-β-D葡萄糖苷键连接而成。

Curdlan is a bacterial polysaccharide formed by fermentation , and its linear structure is composed entirely of ( 1 → 3 ) - β - D glucosidic linkages .

普鲁兰糖（pullulan）是出芽短梗霉在发酵过程中产生的次级代谢产物，是一种由a.（1.6）糖苷键连接麦芽三糖构成的线性分子，也是一种有广阔用途前景的多聚糖。

Pullulan is a kind of secondary metabolite producing by Aureobasidium pullulans . Pullulan is an unbranched homopolysaccharide which consists of maltotriose units with a - ( 1,6 ) - glucosidic bonds . Pullulan have extensive applying prospect in many fields .

普鲁兰酶（Pullulanase，EC.3.2.1.41）是脱支酶的一种，它能专一性水解普鲁兰多糖和支链淀粉分支点上的α-1,6糖苷键，在淀粉糖化工业中具有广阔的应用前景。

Pullulanase ( Pullulanase , EC . 3.2.1.41 ) is a debranching enzyme that can hydrolyze pullulan specificity and amylopectin branch points on the α - 1 , 6 glycosidic bonds .

提取发酵液中的聚唾液酸，红外光谱鉴定其纯度，13C核磁共振图谱表明，该多糖是一种α2,8糖苷键连接的唾液酸同聚物。

Analysis of infrared spectra confirmed that the product was identical with that of standard sample . Its purity was up to 98 % . 13 C NMR spectrum showed that this polysaccharide was a 2,8 α linked homopolymer of sialic acid .

海藻糖（Trehalose）是一种以a，a-1，1-糖苷键连接的非还原性双糖，在逆境条件下具有保护生物膜、蛋白质等生物大分子，所以它具有广阔的应用前景。

Trehalose is a nonreducing disaccharide in which two glucose molecules are bonded in an a , a-1,1-glycosidic linkage , has an exceptional capacity for protecting biological membranes and proteins under stress conditions , so it shows a widely using in the future .

将多糖组分SP-2水解后，用糖腈乙酸酯衍生物气相色谱法分析鉴定得单一葡萄糖，红外光谱显示SP-2为βD吡喃糖苷键构成。

After hydrolysis , SP-2 was found by GC to consist of only one kind of monosaccharide , viz . glucose . Infrared spectrum indicated that SP-2 has β glycosidic linkage of D glycopyranoside .

细胞质唾液酸酶（Neu2）是一种分布于细胞质中，特异性地将唾液酸基团从糖基化化合物分离的一种糖苷键水解酶。

Cytosolic sialidase neuraminidase 2 ( Neu2 ) is a kind of glycoside hydrolase enzyme which , localized in the cytoplasm , and cleaves sialic acid residues from the glycoconjugates .

意外的是，我们得到的是相应的糖苷键断裂的嘌呤类化合物。

Unexpectedly , we got the corresponding glycosidic bond disconnected compounds .

几丁质酶是降解几丁质糖苷键的水解酶。

Chitinases are digestive enzymes that break down glycosidic bonds in chitin .

一个寡糖由2～20个糖单元由糖苷键连接起来。

An oligosaccharide contains 2 to 20 sugar units joined by glycosidic bonds .

甲壳素是N-乙酰葡萄糖胺的聚合物，甲壳素脱乙酰后为壳聚糖，壳聚糖糖苷键断裂降解为低分子量壳聚糖。

Low molecular weight chitosan is prepared from breakdown of glycosidic bond of chitosan .

糖苷键[合]，苷键[合]环丁烷与氟化氢形成氢键络合物的从头算研究

An ab initio MO study of the hydrogen bond complex between cyclobutane and hydrogen fluoride

红外扫描有典型的多糖吸收峰，糖苷键为β型。

Infrared scanning showed that it has characteristic polysaccharide absorption peaks and β - glycosidic bonds .

糖苷键[合]，苷键[合]氢键受体与供体数目比与溶质浓度的关系

The Relation between the Ratio of Hydrogen Bonding Acceptor Number to Donor Number and Solute Concentration

低聚半乳糖是由2-10个半乳糖基和葡萄糖基通过糖苷键连接的碳水化合物。

Galacto-oligosaccharide ( GOS ) are composed of 2-10 galactose and glucose unit linked by glycosidic bond .