FOOD SCIENCE ›› 2007, Vol. 28 ›› Issue (4): 125-128.

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Preparation of Crystalline L-arabinose from Corn Seed-coat Acid Hydrolysis Fermented by Specific Yeast

 LI  Dao-Yi, YAN  Qiao-Juan, JIANG  Zheng-Qiang, SHI  Bo, LI  Li-Te   

  1. 1.College of Food Science and Nutritional Engineering,China Agricultural University,Beijing 100083,China; 2.College of Engineering,China Agricultural University,Beijing 100083,China; 3.Feed Research Institute,Chinese Academy of Agricultural Sciences,Beijing 100081,China
  • Online:2007-04-15 Published:2011-12-31

Abstract: Corn seed-coat is a major byproduct of the wet-milling cornstarch industry and rich in arabinoxylan.The method of L-arabinose crystalline preparation was carried out in the report.After corn hull being hydrolyzed by the diluted sulfuric acid, the hydrolysis solution was found mainly consisting of arabinose,xylose and glucose.Yeast WYSI5-3 was aerobically cultured in the hydrolyzed solution followed by neutralizing with calcium carbonate to remove xylose and glucose.The result solution was decoiorized with active carbon,desalted with exchange resins and then concentrated.L-arabinose is obtained as crystalline state from aqueous ethanol,and the yield is 9.6% based on corn seed-coat dry mass.The method is easy,feasible,and suitable for industrial preparation of L-arabinose from corn seed-coat.

Key words: L-arabinose, corn seed-coat, yeast, preparation, crystalline