吡喃糖

吡喃糖氧化酶底物特异性研究

A Study of Substrate Specificity on Pyranose Oxidase

关键酶是吡喃糖氧化酶，它释放出H2O2供含锰的过氧化物酶利用。

A critical enzyme is pyranose oxidase , which releases H2O2 for use by the manganese dependent peroxidase enzyme .

目的：评价吡喃糖氧化酶（PROD）对不同的糖底物、甘油和乙二醇的催化作用。

Objective : To evaluate the catalyzing effects of pyranose oxidase ( PROD ) on different sugar substrates , glycerol and ethylene glycol .

通过化学方法和仪器分析方法研究X1多糖的理化性质，结果表明：X1多糖是由吡喃糖构成的中性多糖，分子量为4×10~4Da；

Through lots of chemic method and instrument analysis , we study characteristics of xl polysaccharide . The results indicate : xl polysaccharide is an neutral polysaccharide composed by pyranyl monosaccharide , and molecular weight is 4 X. 104 Da ;

一步法立体专一性合成游离β-吡喃糖碳苷

Stereospecific Synthesis of Free Hydroxyl β - C-Glycosides in One Sstep

核糖毗喃酶催化核糖由吡喃糖形式转换为呋喃糖形式。

Ribose pyranose catalyzes the conversion of ribose from the pyranose to furanose form .

海水小球藻多糖组成单糖主要为吡喃糖，α半缩醛羟基和β半缩醛羟基两种糖苷构型共存；

Pyranose is the major component of the polysaccharide in Marine Chlorella , with two glycoside configurations ,α - hemiacetal hydroxy and β - hemiacetal hydroxy , coexisted .

紫外可见吸收光谱和红外光谱的分析结果表明CLPS-A2为具有乙酰氨基结构的β型吡喃多糖。

UV-VIS spectrum and FTIR analysis showed that CLPS-A2 was β - heterosaccharides with pyran and acetyl amino group .

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 .