6 Composition of Cow's Milk

6.1 Distribution of Nutrients (Whole Milk)
 

Nutrients: Content per 100 g
Energy 274 kJ (65 kcal) Water 87.7 g Protein 3.3 g Lipid 3.6 g Carbohydrate 4.6 g Organic Acids 0.2 g Minerals 0.7 g Minerals Sodium 50 mg Potassium 155 mg Magnesium 12 mg Calcium 120 mg Manganese 3 µg Iron 45 µg Copper 17 µg Zinc 380 µg Phosphorus 90 mg Chloride 100 µg Fluoride 17 µg Iodine 3 µg	Vitamins Vitamin A 30 µg Carotin 17µg Vitamin D 60 ng Vitamin E 85 µg Vitamin K 4 µg Vitamin B1 35 µg Vitamin B2 180 µg Nicotinamide 90 µg Pantothenic acid 350 µg Vitamin B6 45 µg Biotin 4 µg Folic acid 6 µg Vitamin B12 420 µg Vitamin C 2 mg Amino Acids Arg 120 mg His 90 mg Ile 210 mg Leu 350 mg	Lys 260 mg Met 85 mg Phe 170 mg Thr 150 mg Trp 45 mg Tyr 170 mg Val 230 mg Carbohydrates Lactose 4550 mg Lipids Palmitic acid 930 mg Stearic acid 400 mg Oleic acid 890 mg Linolic acid 90 mg Linoleic acid 25 mg Cholesterol 12 mg Others Citric acid 210 mg

Reference: Deutsche Forschungsanstalt für Lebensmittelchemie, Garching bei München (ed), Der kleine "Souci-Fachmann-Kraut" Lebensmitteltabelle für die Praxis, WVG, Stuttgart 1991
 

6.2 Proteinfraction
 

Proteins / Glycoproteins	Amount of total protein	Concentration in Milk
Caseins	80%
alpha S1   alpha S2   beta   kappa   gamma	36%      10%      34%      13%      7%	12-15 g/L 3-4 g/L 9-11 g/L -- 3-4 g/L
Whey Proteins	20%
beta-LG   alpha-LA   Immunoglobulines   BSA   Lactoferrin	50%      22%      15%      5%      2%	3-4 g/L 1-1.5 g/L 0.6-1.0 g/L 0.1-0.4 g/L 0.09 g/L

References: Wal et al. 1995, Wal 1998