TABLE 5–2.
Distribution of Secretory Products in Human Colostrum and Milk*
| Water | 86%-87.5% |
| Total Solids | 11.5 g |
| Nutritional Components | |
| Lactose | 6.9-7.2 g |
| Fat | 3-4.4 g |
| Protein | 0.9-1.03 g |
| α-lactalbumin | 150-170 mg |
| β-lactoglobulin | Trace |
| Serum albumin | 50 mg |
| Electrolytes, Minerals, Trace Metals | |
| Sodium | 15-17.5 mg |
| Potassium | 51-55 mg |
| Calcium | 32-43 mg |
| Phosphorus | 14-15 mg |
| Chloride | 38-40 mg |
| Magnesium | 3 mg |
| Iron | 0.03 mg |
| Zinc | 0.17 mg |
| Copper | 15-105 μg |
| Iodine | 4.5 μg |
| Manganese | 1.5-2.4 μg |
| Fluoride | 5-25 μg |
| Selenium | 1.8-3.2 μg |
| Boron | 8-10 μg |
| Total 0.15-2 g | |
| Nitrogen Products | |
| Whey protein nitrogen | 75-78 mg |
| Casein protein nitrogen | 38-41 mg |
| Nonprotein nitrogen | 25% of total nitrogen |
| Urea | 0.027 g |
| Creatinine | 0.021 g |
| Glucosamine | 0.112 g |
| Vitamins | |
| C | 4.5-5.5 mg |
| Thiamine (B1) | 12-15 μg |
| Niacin | 183.7 μg |
| B6 | 11-14 μg |
| B12 | <0.05 μg |
| Biotin | 0.6-0.9 μg |
| Folic acid | 4.1-5.2 μg |
| Choline | 8-9 mg |
| Inositol | 40-46 mg |
| Pantothenic acid | 200-240 μg |
| A (retinol) | 54-56 μg |
| D | <0.42 IU |
| E | 0.56 μg |
| K | 1.5 μg |
*
Estimates based on amount per deciliter.