Food Biochemistry and Food Processing (2 edition)

BLBS102-c26 BLBS102-Simpson March 21, 2012 13:51 Trim: 276mm X 219mm Printer Name: Yet to Come

26 Equid Milk: Chemistry, Biochemistry and Processing 507

Table 26.6.Amino Acid Composition of Asinine and Equine Milk

Expressed as g amino acid per 100 g Protein, with Comparative Data

for Bovine and Human Milk

Amino Acid Asinine Equine Bovine Human

Aspartic acid 8. 910. 47. 88. 3

Serine 6. 26. 24. 85. 1

Glutamic acid 22. 820. 123. 217. 8

Glycine 1. 21. 91. 82. 6

Histidine 2. 32. 43. 02. 3

Arginine 4. 65. 23. 34. 0

Threonine 3. 64. 34. 54. 6

Alanine 3. 53. 23. 04. 0

Proline 8. 88. 49. 68. 6

Cystine 0. 40. 60. 61. 7

Tyrosine 3. 74. 34. 54. 7

Valine 6. 54. 14. 86. 0

Methionine 1. 81. 51. 81. 8

Lysine 7. 38. 08. 16. 2

Isoleucine 5. 53. 84. 25. 8

Leucine 8. 69. 78. 710. 1

Phenylalanine 4. 34. 74. 84. 4

Tryptophan – 1. 21. 51. 8

Essential amino acids 38. 236. 737. 540. 7

Source: Modified from Guo et al. 2007.

Table 26.7.Free Amino Acids (μM.L−^1 ) of Equine, Bovine and

Human Milk

Amino Acid Equinea Bovinea Humanb

Alanine 105 30.0 227.5

Arginine 14.0 10.0 35.4

Aspartic acid 40.0 15.0 183.2

Cystine 2.0 21.0 56.0

Glutamic acid 568.0 117.0 1184.1

Glutamine 485.0 12.0 284.8

Glycine 100.0 88.0 124.6

Histidine 46.0 9.0 7.7

Isoleucine 8.0 3.0 33.4

Leucine 16.0 3.0 55.6

Lysine 26.0 15.0 39.0

Methionine ∼ 0 ∼08.8

Phenylalanine 5.0 3.0 23.6

Proline 1.61 – 64.3

Serine 175 23.0 273.7

Taurine 32.0 13.0 301.1

Threonine 137.0 16.0 97.6

Tyrosine 3.0 0.3 2.5

Valine 45.0 5.0 72.7

Total ∼1960.0 578.0 3019.7

aRassin et al. 1978.

bAgostini et al. 2000.