TABLE 3.

Growth of three Roseburia sp. strains, introduced into the fermentors, on single substrates in batch culture on YCFA medium supplemented with carbon sources and incubated for 24 h at 37°C

SubstrateaGrowth ofb:
Roseburia sp. strain A2-194Roseburia sp. strain A2-183R. intestinalis L1-82
Amylopectin++++++
Pectin (citrus fruit)
Inulin (dahlia)++
Xylan (soluble, oat spelt)+
Inulin (chicory)++++++
  • a Each substrate was added at a concentration of 0.5%.

  • b Growth was recorded as the change in absorbance over 24 h relative to blanks with no carbohydrates, as follows: −, optical density at 650 nm of ≤0.1; +, optical density at 650 nm of >0.1 and ≤0.5; ++, optical density at 650 nm of >0.5 and ≤1.0; +++, optical density at 650 nm of ≥1.0.