CBSE Class 9 Answered

what is chemical composition of milk?

Asked by Mishaal Desai | 14 Jul, 2013, 10:54: AM

Expert Answer

Milk is an emulsion or colloid of butter-fat molecules within a water-based fluid. These particles are made of phospholipids and proteins. There are too many components in milk for it to have a basic chemical formula so it is just a very complex mixture.

Nutritional Data for 100 grams of MILK; COW, WHOLE, PAST AND RAW, FLUID, 3.3% FAT

Mean value per 100.00 grams edible part; 0.0% refuse
Portions: 1 C = 244.00 gm, 1 QT = 976.00 gm
49.5% Cals from fat, 22.2% Cals from protein, 28.3% Cals from carbs.

Name Unit Amount
Food energy KCal 61.441
Protein Gms 3.290
Total lipid (fat) Gms 3.340
Carbohydrate, by diff. Gms 4.660
Total saturated fat Gms 2.079
Ttl monounsaturated fat Gms 0.965
Ttl polyunsaturated fat Gms 0.124
Cholesterol Mg 13.600
Sodium Mg 49.000
Total dietary fiber Gms 0.000
Vitamin A Re 31.000
Vitamin A IU 126.000
Ascorbic acid Mg 0.940
Thiamin Mg 0.038
Riboflavin Mg 0.162
Niacin Mg 0.084
Vitamin B6 Mg 0.042
Folacin Mcg 5.000
Vitamin B12 Mcg 0.357
Potassium Mg 151.500
Calcium Mg 119.400
Phosphorus Mg 93.400
Magnesium Mg 13.440
Iron Mg 0.050
Zinc Mg 0.380
Pantothenic acid Mg 0.314
Copper Mg 0.010
Manganese Mg 0.004
Ash Gms 0.720
Water Gms 87.990
Food energy KJ 257.131
Butyric acid (4:0) Gms 0.108
Capriic acid (6:0) Gms 0.064
Caprylic acid (8:0) Gms 0.037
Capric acid (10:0) Gms 0.084
Lauric acid (12:0) Gms 0.094
Myristic acid (14:0) Gms 0.336
Palmitic acid (16:0) Gms 0.879
Stearic acid (18:0) Gms 0.405
Palmitoleic acid(16:1) Gms 0.075
Oleic acid (18:1) Gms 0.840
Linoleic acid (18:2/n6) Gms 0.075
Linolenic acid(18:3/n3) Gms 0.049
Eicosatetraenoic(20:4) Gms 0.000
Phytosterols Mg 0.000
Histidine Gms 0.089
Isoleucine Gms 0.199
Leucine Gms 0.322
Lysine Gms 0.261
Methionine Gms 0.083
Cystine Gms 0.030
Methionine+Cystine Gms 0.113
Phenylalanine Gms 0.159
Tyrosine Gms 0.159
Phenylalanine+Tyrosine Gms 0.318
Threonine Gms 0.149
Tryptophan Gms 0.046
Valine Gms 0.220
Arginine Gms 0.119
Alanine Gms 0.113
Aspartic acid Gms 0.250
Glutamic acid Gms 0.689
Glycine Gms 0.070
Proline Gms 0.319
Serine Gms 0.179
Protein Score: 100, 41% ideal. EAA score: 1.79.
Limiting Amino Acid: Histidine

Answered by | 14 Jul, 2013, 01:22: PM