International Journal of Food Sciences and Nutrition 2012-05-01

The chromatographic analysis of oligosaccharides and preparation of 1-kestose and nystose in yacon.

Zhen-Yuan Zhu, Hong-Yu Lian, Chuan-Ling Si, Yang Liu, Nian Liu, Jing Chen, Li-Na Ding, Qiang Yao, Yongmin Zhang

Index: Int. J. Food Sci. Nutr. 63(3) , 338-42, (2012)

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Abstract

The thin-layer chromatographic analysis of the crude oligosaccharides extracted from yacon revealed the presence of glucose, fructose, sucrose, 1-kestose and nystose. The qualitative and quantitative analysis was carried out on oligosaccharides by high pressure liquid chromatography and the results showed that the contents of d-glucose, fructose, sucrose, 1-kestose, nystose and 1-fructofuranosyl nystose in oligosaccharides were 38.30%, 16.44%, 14.58%, 12.29%, 12.17%, 6.20%, respectively. The content of the fructooligosaccharides in oligosaccharides was 30.66%. The crude oligosaccharides were separated and purified by silica gel column chromatography. The two fractions obtained from crude oligosaccharides were 1-kestose and nystose, which were identified by mass spectra. The yield of 1-kestose and nystose were 10.36% and 9.73%, respectively. The purity of 1-kestose was 82.9% and of nystose was 73.6%.

Related Compounds

  • 1-Kestose
  • Nystose

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