Cultivation of the gut bacterium Prevotella copri DSM 18205T using glucose and xylose as carbon sources

Fang Huang, Roya R R Sardari, Andrius Jasilionis, Olof Böök, Rickard Öste, Ana Rascón, Lovisa Heyman-Lindén, Olle Holst, Eva Nordberg Karlsson

Research output: Contribution to journalArticlepeer-review

1 Citation (SciVal)

Abstract

Prevotella copri DSM18205T is a human gut bacterium, suggested as a next-generation probiotic. To utilize it as such, it is, however, necessary to grow the species in a reproducible manner. Prevotella copri has previously been reported to be highly sensitive to oxygen, and hence difficult to isolate and cultivate. This study presents successful batch cultivation strategies for viable strain inoculations and growth in both serum bottles and a stirred tank bioreactor (STR), without the use of an anaerobic chamber, as long as the cells were kept in the exponential growth phase. A low headspace volume in the STR was important to reach high cell density. P. copri utilized xylose cultivated in Peptone Yeast Xylose medium (PYX medium), resulting in a comparable growth rate and metabolite production as in Peptone Yeast Glucose medium (PYG medium) in batch cultivations at pH 7.2.Up to 5 g/L of the carbon source was consumed, leading to the production of succinic acid, acetic acid, and formic acid, and cell densities (OD620 nm ) in the range 6-7.5. The highest yield of produced succinic acid was 0.63 ± 0.05 g/g glucose in PYG medium cultivations and 0.88 ± 0.06 g/g xylose in PYX medium cultivations.

Original languageEnglish
Pages (from-to)1-15
JournalMicrobiologyOpen
Volume10
Issue number3
DOIs
Publication statusPublished - 2021 Jun

Subject classification (UKÄ)

  • Industrial Biotechnology

Fingerprint

Dive into the research topics of 'Cultivation of the gut bacterium Prevotella copri DSM 18205T using glucose and xylose as carbon sources'. Together they form a unique fingerprint.

Cite this