Effects of Oxygen Carrier（H2O2） on the Biosynthesis of Xanthan Gum by Xanthomonas campestris

Abstract

Abstract: Xanthan gum is a kind of exospore heteropolysaccharide that can be biosynthesized by Xanthomonas campestris.The yield of Xanthan gum was largely affect by dissolved oxygen in the fermented liquor. As an oxygen carrier, hydrogenperoxide (H2O2) was introduced into fermentation process to improve dissolved oxygen level and increase the yield of Xanthangum. 48h and 4.4mmol/L was the optimal time and H2O2 concentration, respectively. The yield of Xanthan gum was increasedaveragely by 3.28%.

Key words: Xanthomonas campestris, Xanthan gum, H2O2

OU Jie , LI Bai-Lin, LIU Xiu-Jie, WANG Gang. Effects of Oxygen Carrier（H2O2） on the Biosynthesis of Xanthan Gum by Xanthomonas campestris[J]. FOOD SCIENCE, 2004, 25(11): 215-217.

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Effects of Oxygen Carrier（H2O2） on the Biosynthesis of Xanthan Gum by Xanthomonas campestris

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