山茱萸多糖SZYP-2的结构分析

从中药山茱萸（Fructus Corni)中分离得到多糖组分SZYP－2，它的糖基组成为鼠李糖、阿拉伯糖、半乳糖和葡萄糖，单糖间的摩尔比是1：3.3:3:3.8，通过部分甲基化、部分乙酰化后的气相色谱分析确定了各单糖间的连接点。     

多糖衍生物类固定相在高效液相色谱手性分离中的应用进展

评述了多糖衍生物手性固定相在高效液相色谱手性分离中的应用进展，介绍了多糖衍生物手性固定相的主要类型，阐述了手性拆分机理和影响手性拆分的因素，引用文献66篇。     

黄原胶在水溶液中构象的研究

本文用GPC法研究了水溶液中黄原胶的构象及构象的变化。指出在低离子强度下,黄原胶主要是以多分子缔合状态而存在,少量以单分子状态而存在。缔合状态下的黄原胶分子呈分段的双股螺旋构象。     

红栓菌多糖的分级、表征、分子链构型参数和抗癌活性研究

本文研究了以水为溶剂,乙醇为沉淀剂,获得6个级分的红栓菌多糖,并运用动态膜渗透压法、VPO法、超速离心沉降法、小角激光光散射和高效液相色谱等,对其进行了表征。使用分光光度计,以浊点滴定法与修正的Elias公式确定红栓菌多糖溶液的θ组成为:V_(H_2O):V_(CH_3COCH_3)=89.82:10.18(体积比)。再在θ条件下建立红栓菌多糖的Mark-Houwink方程:[η]=5.01×10~(-4)M~(0.502)计算出它的无扰尺寸。由色谱法和董履和函数适应法解得红栓菌多糖的分子量分布。 通过抗癌药理活性实验,发现该多糖对小白鼠肉瘤S_(180)有较强的生理活性,能抑制肿瘤生长。同时还发现多糖Ⅱ活性高于多糖Ⅰ活性。     

Visualisation of polysaccharide fouling on microporous membrane using different characterisation techniques

Although many studies assessed fouling behaviour in microporous membrane processes like membrane bioreactors (MBRs), in situ or direct observation of the fouling layer has not yet been possible. The observation of the fouling layer resulting from the filtration of model solutions allowed better understanding of MBR fouling intensity and mechanisms. In this study, alginate has been used as a model for polysaccharide (one of the main foulants in MBRs). Three visualisation techniques, confocal laser scanning microscopy (CLSM), environmental scanning electron microscopy (ESEM), and direct observation (DO) have been tested to observe the alginate fouling. The work presented in this paper revealed the advantages and limitations of each technique used for this specific application. Although no coating is required for this technique, ESEM allowed distinct non-destructive observation of clean membrane. However, the lack of structure in the alginate fouling layer limited the use of this technique for fouled membranes. While CLSM requires the use of expensive fluorescent markers, DO appeared as the most promising technique for direct and in situ observation of MBR fouling. DO of alginate/bentonite and alginate/bacteria solutions revealed the creation of a well-structured dual fouling system (bentonite-concentrated layer of 50 μm embedded and covered by a concentration polarisation of alginate greater than 240 μm) on the surface of hollow fibre membrane.     

灵芝富碘实验中多糖含量变化的探讨

阐述了ＴＷ灵芝在液体深层培养中，进行富集碘实验过程菌丝体多糖含量的变化．实验表明，在ＴＷ灵芝液体培养中添加１０００×１０－６～８０００×１０－６浓度的碘化钾，菌丝体多糖含量为０．９２％～１．５８％．     

鬼毛针多糖的~(13)CNMR研究

用 1 3C NMR谱研究鬼毛针多糖的结构 ,结果表明 ,对于多糖的 C- 1区、C- 6区和取代后的 C- 2、C- 3、C-4区 ,1 3C NMR谱都具有很强的规律性。     

质谱法测定多糖结构的机理研究

用气相色谱－质谱法对多糖的结构进行了测定，并着重对质谱法测定多糖结构的机理进行了研究。     

Enantioseparation of aldols by high‐performance liquid chromatography on polysaccharide‐based chiral stationary phases that bear chlorinated substituents

Two families of aldols, obtained from the condensation of aromatic aldehydes with cyclohexanone or acetone (ten examples in each group), were analyzed by high‐performance liquid chromatography in normal phase elution mode on three polysaccharide‐based chiral stationary phases of the Lux series, namely, Lux Cellulose‐2, Lux Cellulose‐4 and Lux Amylose‐2, which share the common feature of chlorinated substituents in the chiral selectors. Following simple optimization steps, the enantioseparation of all aldols derived from cyclohexanone was achieved and the highest values of separation factor (α, 1.32 < α < 2.20) and resolution (R_s, 4.5 < R_s <17.2) were observed on Lux Cellulose‐2, with the only exception of the 4‐nitro‐substituted derivative that was better resolved on Lux Cellulose‐4. On the contrary, Lux Amylose‐2 was the best choice for aldols derived from acetone and only specific analytes in this group were resolved on the cellulose‐based supports. A variable‐temperature study of selected compounds allowed us to determine thermodynamic parameters of the enantioseparation process, which was enthalpy‐controlled in all the cases except one.