Udvidet returret til d. 31. januar 2025

Riboflavin production with Ashbya gossypii (Band 6) - Susanne Katharina Schwechheimer - Bog

Bag om Riboflavin production with Ashbya gossypii (Band 6)

The fungus Ashbya gossypii is an important industrial producer of riboflavin, i.e. vitamin B2. Here, we developed and then used a highly sophisticated set-up of parallel 13C tracer studies with labeling analysis by GC/MS, LC/MS, 1D, and 2D NMR to resolve carbon fluxes and obtain a detailed picture of the underlying metabolism in the overproducing strain A. gossypii B2 during growth and riboflavin production from a complex industrial medium using vegetable oil as carbon source. Glycine was exclusively used as carbon-two - but not carbon-one (C1) - donor of the vitamin's pyrimidine ring due to the proven absence of a functional glycine cleavage system. Yeast extract was the main carbon source during growth, while still contributing 8 % overall carbon to riboflavin. Overall carbon flux from rapeseed oil into riboflavin equaled 80 %. Transmembrane formate flux simulations revealed that the C1-supply displayed a severe bottleneck during the initial riboflavin production, which was overcome in later phases of the cultivation by intrinsic formate accumulation. The transiently limiting C1-pool was successfully replenished by time-resolved feeding of formate or serine. This increased the intracellular precursor availability and resulted in a riboflavin titer increase of 45 %. This study is the first that successfully sheds light on carbon fluxes during the growth and riboflavin production phase by use of 13C tracers and a complementary platform of analytical techniques.

Vis mere
  • Sprog:
  • Engelsk
  • ISBN:
  • 9783736998810
  • Indbinding:
  • Paperback
  • Sideantal:
  • 174
  • Udgivet:
  • 26. november 2018
  • Størrelse:
  • 210x148x9 mm.
  • Vægt:
  • 213 g.
  • 8-11 hverdage.
  • 20. november 2024

Normalpris

  • BLACK NOVEMBER

Medlemspris

Prøv i 30 dage for 45 kr.
Herefter fra 79 kr./md. Ingen binding.

Beskrivelse af Riboflavin production with Ashbya gossypii (Band 6)

The fungus Ashbya gossypii is an important industrial producer of riboflavin, i.e. vitamin B2. Here, we developed and then used a highly sophisticated set-up of parallel 13C tracer studies with labeling analysis by GC/MS, LC/MS, 1D, and 2D NMR to resolve carbon fluxes and obtain a detailed picture of the underlying metabolism in the overproducing strain A. gossypii B2 during growth and riboflavin production from a complex industrial medium using vegetable oil as carbon source. Glycine was exclusively used as carbon-two - but not carbon-one (C1) - donor of the vitamin's pyrimidine ring due to the proven absence of a functional glycine cleavage system. Yeast extract was the main carbon source during growth, while still contributing 8 % overall carbon to riboflavin. Overall carbon flux from rapeseed oil into riboflavin equaled 80 %. Transmembrane formate flux simulations revealed that the C1-supply displayed a severe bottleneck during the initial riboflavin production, which was overcome in later phases of the cultivation by intrinsic formate accumulation. The transiently limiting C1-pool was successfully replenished by time-resolved feeding of formate or serine. This increased the intracellular precursor availability and resulted in a riboflavin titer increase of 45 %. This study is the first that successfully sheds light on carbon fluxes during the growth and riboflavin production phase by use of 13C tracers and a complementary platform of analytical techniques.

Brugerbedømmelser af Riboflavin production with Ashbya gossypii (Band 6)



Find lignende bøger
Bogen Riboflavin production with Ashbya gossypii (Band 6) findes i følgende kategorier:

Gør som tusindvis af andre bogelskere

Tilmeld dig nyhedsbrevet og få gode tilbud og inspiration til din næste læsning.