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Table 1 Ammonia production from peptides (Trypticase) and amino acids by mixed human faecal bacteria in vitro with and without added 5 μM monensin

From: Ammonia production by human faecal bacteria, and the enumeration, isolation and characterization of bacteria capable of growth on peptides and amino acids

Substrate

Rate of ammonia production

 

(μmol (mg protein)-1 h-1)

Donor

O1

O2

O3

V1

V2

V3

Mean

SE

Trypticase

1.44

1.39

1.62

0.65

3.03

1.71

1.64

0.39

Amino acids

1.00

0.94

1.13

0.40

2.30

1.04

1.14

0.31

Trypticase + monensin

0.88

0.80

1.01

0.50

2.04

0.80

1.00

0.27

Amino acids + monensin

0.50

0.30

0.43

0.28

0.96

0.31

0.46

0.13

P values

        

Trypticase vs amino acids

<0.001

     

Monensin

  

<0.001

     

Trypticase vs amino acids × monensin

0.866

     

O or V, Trypticase vs amino acids

0.648

     

O or V, monensin,

0.631

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