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Optimization of Ascorbic Acid-2-Phosphate Production from Ascorbic Acid Using Resting Cell of Brevundimonas diminuta
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  • Optimization of Ascorbic Acid-2-Phosphate Production from Ascorbic Acid Using Resting Cell of Brevundimonas diminuta
  • Optimization of Ascorbic Acid-2-Phosphate Production from Ascorbic Acid Using Resting Cell of Brevundimonas diminuta
저자명
Shin. Woo-Jung,Kim. Byung-Yong,Bang. Won-Gi
간행물명
Journal of microbiology and biotechnology
권/호정보
2007년|17권 5호|pp.769-773 (5 pages)
발행정보
한국미생물생명공학회
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정기간행물|ENG|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

With the aim to produce ascorbic acid-2-phosphate(AsA-2-P) from L-ascorbic acid(AsA, Vitamin C), nine bacteria conferring the ability to transform AsA to AsA-2-P were isolated from soil samples alongside known strains from culture collections. Most isolates were classified to the genus Brevundimonas by 16S phylogenetic analysis. Among them, Brevundimonas diminuta KACC 10306 was selected as the experimental strain because of its the highest productivity of AsA-2-P. The optimum set of conditions for the AsA-2-P production from AsA using resting cells as the source of the enzyme was also investigated. The optimum cultivation time was 16 h and the cell concentration was 120g/l(wet weight). The optimum concentrations of AsA and pyrophosphate were 550mM and 450mM, respectively. The most effective buffer was 50mM sodium formate. The optimum pH was 4.5 and temperature was $40^{circ}C$. Under the above conditions, 27.5g/l of AsA-2-P was produced from AsA after 36 h of incubation, which corresponded to a 19.7% conversion efficiency based on the initial concentration of AsA.