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Table 1 Concentrations and proportions of SCFA in stool during prebiotic and control weeks, averaged across individuals. Significance was determined by generalized linear mixed models (see methods). Concentrations of stool expressed as mM are equivalent to mmol/kg (see methods)

From: Microbiota responses to different prebiotics are conserved within individuals and associated with habitual fiber intake

  Control Inulin GOS Dextrin
  Median [min–max] Median [min–max] p Median [min–max] p Median [min–max] p
CONCENTRATION
Acetate (mM) 47.4 [5.6 – 102.1] 46.9 [11.6 – 94.1] 0.52 47.2 [14.8 – 80.0] 0.18 50.6 [10.9 – 94.7] 0.39
Propionate (mM) 13.1 [3.2 – 37.8] 13.1 [5.7 – 21.8] 0.41 12.3 [2.6 – 26.0] 0.015 14.4 [5.7 -29.6] 0.038
Butyrate (mM) 12.1 [2.8 – 40.3] 12.4 [4.1 – 34.5] 0.26 10.2 [4.1 – 29.5] 0.002 10.9 [4.6 – 31.3] 0.29
Total SCFA (mM) 75.1 [15.6 – 153.7] 72.7 [27.9 – 131.1] 0.67 68.6 [25.6 – 114.4] 0.038 76.4 [21.1 – 145.4] 0.51
PROPORTION
Acetate (%) 64.6 [41.9 -77.9] 63.7 [22.1 -74.6] 0.21 65.9 [45.9 – 86.8] 0.19 65.7 [44.5 – 74.9] 0.43
Propionate (%) 18.4 [9.6 -36.2] 19.6 [8.1 – 34.7] 0.63 18.8 [4.5 – 35.4] 0.70 20.1 [10.3 – 36.4] 0.31
Butyrate (%) 16.1 [8.0 – 32.9] 18.0 [11.2 – 55.1] 0.009 15.3 [8.6 -28.0] 0.027 14.6 [10.4 – 30.4] 0.006