FOOD SCIENCE ›› 2009, Vol. 30 ›› Issue (19 ): 125-127.doi: 10.7506/spkx1002-6630-200919027

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Investigations of Xylooligosaccharides in Corncob

ZHANG Pei-gang1,ZHANG Jing-wen2,ZHANG Feng-qing2,XU Ping2,REN Bao-guo1   

  1. 1. Jilin Teacher's Institute of Engineering and Technology, Changchun 130052, China;
    2. School of Chemistry and Life Science, Changchun University of Technology, Changchun 130012, China
  • Received:2009-07-12 Online:2009-10-01 Published:2010-12-29
  • Contact: ZHANG Pei-gang1, E-mail:swspx@126.com

Abstract:

Water-soluble crude polysaccharides obtained from corncob through water extraction and ethanol precipitation were partially hydrolyzed by trifluoroacetic acid. The crude polysaccharides and their hydrolysates were separately purified (fractionated) by Sephadex G-25 chromatography to be fractions A and B and they were then analyzed by thin-layer chromatography (TLC) and high-pressure liquid chromatography (HPLC). Xylobiose and xylotriose were major components of xylooligosaccharides from corncob. Fraction B mainly consisted of xylobiose with a yield of 6.84% in chromatographic purification and the xylobiose content was as high as 95.63%. However, the xylotriose content was only 0.22%.

Key words: corncob, xylooligosaccharides, xylobiose, xylotriose, component, content

CLC Number: