Table 4.

Relationships and fermentation products of the butyrate-producing strains shown in Fig. 3 a

StrainRibotype groupSpecies identified% HomologybSCFA production (mM)H2 production (μ mol ml−1)
ButyrateAcetateLactate
L1-811UnidentifiedNA5.7−2.01.45.0
L1-8101UnidentifiedNA5.541.025.50.1
L1-9521UnidentifiedNA21.3−10.07.16.5
L1-931UnidentifiedNA9.8−10.65.7 NDc
L1-832UnidentifiedNA6.5−2.32.12.7
L1-923aUnidentifiedNA8.3−3.90.112.0
L2-213a Eubacterium rectale 983.6−3.6NDND
L2-503bUnidentifiedNA12.711.10.974.3
A1-864 Eubacterium rectale 984.7−2.126.53.2
A2-1834 Roseburia cecicola 9520.0−8.29.714.8
T1-8155 Eubacterium rectale 983.30.718.72.6
T1-8176 Bifidobacterium infantis orlongum 982.17.29.22.1
L2-67 Fusobacterium prauznitzii 983.3−4.8NDND
A2-1657 Fusobacterium prauznitzii 9814.4−7.42.9  0
L2-78 Eubacteriumspp.977.9−2.2NDND
L2-109UnidentifiedNA4.9−4.3NDND
L2-1210 Eubacterium ventriosum 984.6−1.7NDND
A2-16611UnidentifiedNA9.72.4NDND
A2-20712 Eubacteriumspp.964.6−2.001.7
A2-23113UnidentifiedNA5.65.2NDND
A2-17514UnidentifiedNA5.0−1.8NDND
T2-13214UnidentifiedNA2.247.66.70.1
A2-19415UnidentifiedNA7.3−3.57.1  0
T2-14518UnidentifiedNA2.71.0NDND
  • a Data for SCFA (butyrate and acetate) and for production of lactate and H2 were from two separate experiments. None of the strains produced propionate, with the possible exception of L1-83 (3 mM).

  • b Percent homology indicates the maximum base sequence identity obtained in database searches. NA, not applicable, indicates no value above 95% identity.

  • c ND, not determined.