Table 1 Free amino acid content (μmol/dL) ¹ of human milk collected during three stages of lactation

1.45 ± 0.15^a,3

2.31 ± 0.16^b

2.00 ± 0.16^b

p = 0.85

0.54 ± 0.06^a

0.62 ± 0.07^a,b

0.71 ± 0.07^b

p = 0.89

1.31 ± 0.19^a

1.69 ± 0.20^a

2.86 ± 0.20^b

p = 0.21

2.72 ± 0.27^a

1.40 ± 0.29^b

1.28 ± 0.29^b

p = 0.54

0.27 ± 0.03^a

0.35 ± 0.04^a

0.48 ± 0.04^b

p = 0.17

0.51 ± 0.08^a

0.89 ± 0.08^b

1.04 ± 0.08^b

p = 0.69

4.77 ± 0.49^a

6.11 ± 0.53^b

7.33 ± 0.53^b

p = 0.08

nd⁴

nd

nd

---

2.36 ± 0.23^a

3.76 ± 0.25^b

4.57 ± 0.25^c

p = 0.44

12.54 ± 1.56^a

21.33 ± 1.69^b

27.27 ± 1.69^c

p = 0.46

1.56 ± 0.18^a

1.05 ± 0.19^b

0.95 ± 0.19^b

p = 0.87

2.41 ± 0.48^a

3.78 ± 0.52^b

5.56 ± 0.52^c

p = 0.31

nd

nd

nd

---

0.65 ± 0.15^a

1.28 ± 0.16^b

2.24 ± 0.16^c

p = 0.58

44.44 ± 5.96^a

91.25 ± 6.45^b

120.33 ± 6.45^c

p = 0.19

10.70 ± 2.64^a

33.40 ± 2.86^b

61.15 ± 2.86^c

p = 0.48

4.94 ± 0.73^a

9.74 ± 0.78^b

13.23 ± 0.78^c

p = 0.76

3.70 ± 0.35^a

2.68 ± 0.38^b

2.61 ± 0.38^b

p = 0.89

4.12 ± 0.61^a

8.43 ± 0.66^b

12.55 ± 0.66^c

p = 0.69

51.24 ± 2.39^a

42.49 ± 2.58^b

35.72 ± 2.58^c

p = 1.00

0.68 ± 0.09^a

0.95 ± 0.10^b

1.02 ± 0.10^b

p = 0.43

13.93 ± 1.09^a

17.14 ± 1.17^b

20.27 ± 1.17^c

p = 0.13

136.98 ± 11.35^a

216.31 ± 12.26^b

282.54 ± 12.26^c

p = 0.67

150.91 ± 12.00^a

233.44 ± 12.97^b

302.82 ± 12.97^c

p = 0.79