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Table 4 Short-chain fatty acids (SCFA) in the caecal digesta of rats consuming control (C) and inulin (IN) diets without or with the addition of grapefruit flavonoid extract (GFE)

From: Does dietary inulin affect biological activity of a grapefruit flavonoid-rich extract?

Index Diet Pooled
SEM
ANOVA (P value)
  C IN C + GFE IN + GFE   IN GFE IN × GFE
Concentration (μmol/g)         
   Acetic acid 31.7 31.9 17.6 21.0 1.359 NS < 0.001 NS
   Propionic acid 3.59b 4.81a 2.44c 3.39b 0.185 < 0.001 < 0.001 NS
   Iso-butyric acid 0.944 0.686 0.569 0.580 0.044 NS < 0.01 NS
   Butyric acid 4.66b 8.11a 1.42c 1.81c 0.524 < 0.001 < 0.001 < 0.001
   Iso-valeric acid 1.12a 0.803b 0.766b 0.706b 0.048 < 0.05 < 0.01 NS
   Valeric acid 1.400 1.082 0.892 0.821 0.063 NS < 0.001 NS
   Total SCFA 43.4 47.4 23.6 28.3 2.020 NS < 0.001 NS
Profile (% of total)         
   Acetic acid 72·9a 67·3b 74·2a 74·1a 0·699 < 0·01 < 0·001 < 0·01
   Propionic acid 8·3b 10·3a 10·4a 12·1a 0·389 < 0·01 < 0·01 NS
   Butyric acid 10·8b 17·0a 6·0c 6·3c 0·872 < 0·001 < 0·001 < 0·001
  1. a, b, c Values not sharing the same superscript letters within a row are different at P ≤ 0.05.