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Table 3 Stool fatty acids, fatty acid soaps and calcium composition (mg/g stool dry weight)

From: Effect of milk fat-based infant formulae on stool fatty acid soaps and calcium excretion in healthy term infants: two double-blind randomised cross-over trials

CS1

CS2

 

50MF

(N = 16)

VF

(N = 16)

 

20MF

(N = 17)

VF

(N = 17)

Free Fatty Acids

  

Free Fatty Acids

  

Palmitic acid (C16:0)2

4.4 (3.4–10.3)

5.7 (4.4–9.1)

Palmitic acid (C16:0)3

5.9 (3.8–13.4)

4.9 (3.8–7.3)

Lauric acid (C12:0)2

0.50 (0.28–0.78)1

1.38 (1.11–1.99)

Lauric acid (C12:0)1

1.30 (0.72)2

1.59 (0.840

Myristic acid (C14:0)1

1.35 (0.70)2

1.00 (0.59)

Myristic acid (C14:0)3

0.98 (0.66–1.59)2

0.79 (0.64–1.00)

Stearic acid (C18:0)2

1.83 (1.25–4.37)2

1.25 (0.93–1.84)

Stearic acid (C18:0)3

1.40 (0.92–2.94)2

0.99 (0.83–1.48)

Oleic acid (C18:1 n-9)2

4.80 (3.32–7.84)

5.01 (3.91–8.30)

Oleic acid (C18:1 n-9)3

6.65 (4.09–8.29)

5.70 (4.65–7.43)

Linoleic acid (C18:2)2

0.73 (0.46–1.36)

0.84 (0.45–1.46)

Linoleic acid (C18:2)2

0.93 (0.72–1.95)

0.88 (0.84–1.37)

Gamma Linolenic acid (C18:3 n-6)1

0.08 (0.02)2

0.07 (0.02)

Gamma Linolenic acid (C18:3 n-6)1

0.09 (0.04)

0.08 (0.02)

Alpha Linolenic acid (C18:3 n-3)3

0.07 (0.07–0.10)

0.07 (0.06–0.11)

Alpha Linolenic acid (C18:3 n-3)2

0.09 (0.07–0.19)

0.09 (0.08–0.15)

Arachidic acid (C20:0)2

0.10 (0.07–0.18)

0.10 (0.09–0.17)

Arachidic acid (C20:0)3

0.09 (0.07–0.17)

0.09 (0.08–0.12)

Total FAs1

22.37 (11.43)

23.16 (12.84)

Total FAs3

18.6 (15.7–32.7)

19.4 (15.3–22.3)

Fatty Acid Soaps

  

Fatty Acid Soaps

  

Palmitic soap (C16:0)1

111.28 (18.33)1

220.25 (29.35)

Palmitic soap (C16:0)1

216.24 (25.16)2

233.94 (35.12)

Lauric soap (C12:0)2

1.76 (1.50–2.27)1

6.83 (5.74–7.67)

Lauric soap (C12:0)1

4.38 (1.27)1

7.34 (1.88)

Myristic soap (C14:0)1

10.82 (2.09)

11.24 (1.37)

Myristic soap (C14:0)3

11.90 (10.90–13.20)

12.20 (11.10–12.70)

Stearic soap (C18:0)1

50.92 (7.81)1

31.21 (4.78)

Stearic soap (C18:0)3

39.50 (38.40–46.40)2

36.40 (31.20–37.60)

Oleic soap (C18:1 n-9)2

10.02 (7.05–14.05)

8.72 (7.61–12.65)

Oleic soap (C18:1 n-9)1

10.10 (6.11)2

11.63 (7.29)

Linoleic soap (C18:2)2

1.11 (0.70–1.42)

1.13 (0.92–1.47)

Linoleic soap (C18:2)1

1.21 (0.70)2

1.57 (0.98)

Total FA soaps1

201.63 (34.79)1

290.19 (42.81)

Total FA soaps1

296.59 (31.29)2

311.18 (39.75)

Calcium

  

Calcium

  

Stool calcium1

46.40 (5.27)2

49.88 (4.77)

Stool calcium1

46.20 (4.26)2

50.47 (6.71)

  1. 1Analysis of variance for variable in original scale of measurement. Data are presented as mean (SD)
  2. 2 Analysis of variance for log-transformed variable. Data are presented as median (IQR)
  3. 3Non-parametric analysis (Wilcoxon Signed Rank). Data are presented as median (IQR)
  4. P-values indicated by a, p < 0.0001; b, p < 0.05 are not eligible for statistical significance according to pre-defined hierarchy
  5. CS1 cross-over study 1; CS2 cross-over study 2; 50MF 50% MF formula; 20MF 20% MF formula; MF milk fat; VF vegetable fat; SD standard deviation; IQR inter-quartile range