FOOD SCIENCE ›› 2012, Vol. 33 ›› Issue (1): 209-214.

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Effect of Inducers on Xylanase Activity and Biosynthesis of Ferulic Oligosaccharides in Aureobasidium pullulans

Xiao Hong-Yu   

  • Received:2011-09-25 Revised:2012-01-08 Online:2012-01-15 Published:2012-01-12
  • Contact: Xiao Hong-Yu E-mail:yxh1127@163.com

Abstract: Feruloyl oligosaccharides (FOs) could be produced as a result of the hydrolysis of wheat bran fiber by xylanase synthesized during fermentation by a mutant strain of Aureobasidium pullulans without the secretion of melanin bred using wheat bran. The effects of inducers such as carbon source, nitrogen source, metal ion and surfactant on the activity of xylanase and the formation of FOs were investigated. The medium composition for FOs production by the strain was optimized using the orthogonal array design method. The highest Fos production and xylanase activity, 627 nmol/L and 52.66 IU/mL, respectively, were achieved by using a medium comprised of 50 g/L wheat bran, 15 g/L glucose, 1 g/L peptone and 1 g/L corn syrup.

Key words: wheat bran, ferulic oligosaccharides, inducer, biosynthesis and control, Aureobasidium pullulans

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