Improvement of D-Ribose Production from Corn Starch Hydrolysate by a Transketolase-Deficient Strain Bacillus subtilis UJS0717. (2nd December 2015)

• Record Type: Journal Article
• Authors: Wei, Zhuan; Zhou, Jue; Sun, WenJing; Cui, FengJie; Xu, QinHua; Liu, ChangFeng
• Other Names: Freire Denise Academic Editor.
• Is Part Of: BioMed research international. Volume 2015(2015)
• Publication Date: 2015-12-02
• Subjects: Medicine -- Periodicals; Biology -- Periodicals; Biotechnology -- Periodicals; Life sciences -- Periodicals; 610.5
• DOI: 10.1155/2015/535097
• Languages: English
• ISSNs: 2314-6133

Abstract

Abstract : D-Ribose is a five-carbon sugar and generally used as an energy source to improve athletic performance and the ability. The culture conditions for maximum D-ribose production performance from cheap raw material corn starch hydrolysate were improved by using one-factor-at-a-time experiments and a three-level Box-Behnken factorial design. The optimal fermentation parameters were obtained as 36°C culture temperature, 10% inoculum volume, and 7.0 initial pH. The mathematical model was then developed to show the effect of each medium composition and their interactions on the production of D-ribose and estimated that the optimized D-ribose production performance with the concentration of 62.13 g/L, yield of 0.40 g/g, and volumetric productivity of 0.86 g/L·h could be obtained when the medium compositions were set as 157 g/L glucose, 21 g/L corn steep liquor, 3.2 g/L (NH4 )2 SO4, 1 g/L yeast extract, 0.05 g/L MnSO4 ·H2 O, and 20 g/L CaCO3 . These findings indicated the D-ribose production performance was significantly improved compared to that under original conditions.