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中文摘要：
^1H-^1HCOSY和^13C-^1H HSQC谱对通过Bio—Gel P-2柱（2．5cm×125cm）分离制备的纤维三糖、纤维四糖和纤维五糖进行分析。结果表明，在水溶液中纤维低聚糖还原末端C1位α构型与β构型之比（α/β）随聚合度增大而减小，纤维三糖主要是α构型（α/β，0．52），而纤维四糖和纤维五糖主要是β构型（α/β，分别是0．34和0．25）。X射线光电子能谱（XPS）分析表明纤维低聚糖的C1s主要有2种电子结合能，分别为284．8（C 1sl，C-O）和286．1eV（C1s 2，0-C-O），C1sl与C1s2之比（C1sl／C1s2）随聚合度增大而增大。
英文摘要：
^1H-^1H COSY and ^13C-^1H HSQC spectra were used to assign cellotriose, cellotetraose and cellopentaose preparatively separated on Bio-Gel P-2 column （2.5 cm × 125 cm）. The results illustrate thatthe configuration ratios of α-form to β-form （α/β） at C1 of the reducing end decrease with the increase of degree of polymerization （Dp） for cellooligosaccharides in aqueous solution. The configuration for cellotriose is mainly the α-form （ α/β, 0.52）, while for cellotetraose and cellopentaose are mainly the β-form （ α/β, 0.34 and 0.25 respectively）. X-ray photoelectron spectra （XPS） analysis shows that the binding energy of C ls was mainly assigned to 284.8 and 286. 1 eV corresponding to C lsl （C--O） and C ls2 （O--C--O）, respectively. The ratios of C lsl/C ls2 increase with the increase of Dp for cellooligosaccharides.
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