Milk consist of nutrients like calcium,magnesium,selenium,riboflavin,vitamin B12 and pantothenic acid. Milk provides essential nutrients and is an important sources of dietary energy, high quality proteins and fats. Milk is the normal mammary secretion derived from complete milking of healthy milch animal without either addition thereto or extraction therefrom unless. Next, the arrow on the sliding portion is placed against the fat content of the given milk and bottom part of scale would give the percentage of total solids opposite to the CLR reading on small scale. Composition of milk Water is the principal constituent of milk. This would give the corrected lactometer reading. The corrected lactometer is observed opposite the line indicating observed temperature of milk. The observed lactometer reading is placed opposite the little arrow at 60 0 F on the temperature scale. The total solids can be determined if lactometer reading, temperature of milk and fat content is known. 5 ) mainly Lactose Lactic acid by bacterial fermentation In heated milk products, e.g., in condensed milk, there is also lactulose which is a little sweeter’ Fat: 3-4 in whole milk contains fat soluble vitamins, pigment carotene & Xanthophylls contains cholesterol. The mechanical device made in the form of a ruler with a sliding centre slip. Composition of Milk Water: 87-88 Carbohydrate: (approx. To have immediate results the total solids content is determined by Richmond’s scale. Iii) Place the figures of fat and CLR in the following formula for calculating total solids and solids not fat. Ii) Take out the lactometer reading and temperature of milk and calculate. I) Determine the fat percentage of milk sample by Gerber’s method. The total solids are determined by formula. This process should be continued/repeated till getting the constant weight or difference in last two weights should not exceed 0.01 gm. Remove the crucible from oven and cooled in desiccators’ and weigh. Again put the crucible for ½ hour in oven. Remove the crucible from oven and cool in desiccators’ and weight. Put the crucible in hot air oven adjusted at 100 0 C for 3 to 4 hours. Clean and dry in hot air oven for 1 ½ hour. Take flat bottomed 50 cm diameter porcelain crucible. This is an accurate method but not practicable and hence is not used.
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