Table 3

Proportions of individual SCFA (as a percentage of total SCFA) produced by in vitro cultures of faecal bacteria from breast fed infants, formula fed infants, and adults containing simple and complex carbohydrates

Breast fed infants (n=11)Formula fed infants (n=11)Adults (n=6)
MedianRangeMedianRangeMedianRange
Acetic acid
 Blank71.6 3-153 54.6-83.859.03-150 0-71.940.824.6-56.8
 Glucose98.03-150 56.2-99.768.344.5-89.666.752.1-88.7
 Raftilose87.63-150 56.4-98.762.039.1-85.863.147.4-86.9
 Soybean polysaccharide73.7 3-153 54.5-85.956.60-72.655.342.2-61.0
Propionic acid
 Blank21.613.0-33.419.76.8-73.114.97.1-52.1  
 Glucose1.43-150 0.0-24.426.38.6-43.617.68.8-26.7
 Raftilose11.90.8-19.016.49.2-59.614.94.0-27.9
 Soybean polysaccharide19.211.7-36.328.80.0-45.723.214.6-32.5
N-butyric acid
 Blank0.93-150 0.0-18.44.4 0.0-8.211.25.0-18.1
 Glucose0.23-150 0.0-28.12.90.1-14.38.91.4-30.0
 Raftilose0.23-150 3-153 0.0-24.89.30.5-34.113.51.8-36.9
 Soybean polysaccharide0.43-150 0.0-20.64.03-150 0.0-17.010.97.4-18.9
Lactic acid
 Blank0.03-150 0.0-8.40.00.0-0.03.20.0-28.0
 Glucose25.89.6-60.413.30.0-77.724.70.0-35.5
 Raftilose10.30.0-44.13.20.0-88.115.90.0-37.3
 Soybean polysaccharide0.00.0-8.50.00.0-1.33.80.0-30.6
  • 3-150 p < 0.05; p < 0.01; p < 0.001 vadults.

  • 3-153 p < 0.05; p < 0.01; p < 0.001 v formula fed infants.

  • ND = not done.