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Q. Evaluate precentage Proteins in Milk ?
Milk comprises of casein, lactoalbumins and lactoglobulins. About 82 per cent of the protein in milk is casein and the remaining proteins are whey proteins, which are lactoalbumin and lactoglobulin. Casein binds with calcium in milk and forms the calcium-caseinate complex, which is present in the colloidal form. Acid, rennet, alcohol and heat can precipitate this complex.
The proteins in milk are determined by the Kjeldahl procedure, which is defined as the amount of nitrogen experimentally found and multiplied by an approximate conversion factor. In this procedure, as you may have already studied about in the Nutritional Biochemistry practical, the sample of milk is oxidized in the presence of sulphuric acid and nitrogenous compounds are converted into ammonium sulphate. Ammonia is liberated by adding an excess of alkali and is quantitatively distilled into a measured volume of standard hydrochloric acid or sulphuric acid. The acid not neutralized by ammonia is back-titrated with standard alkali.
Q. Show properties of the Borax? Salts of boric acids are known as borates. As said earlier, hydrated borates occur naturally, e.g., borax, Na 2 B 6 0 11 . 5H 2 0, kernite, Na
The electronic configuration of four elements L,Q, P, and R are given in brackets: L ( 1s 2 , 2s 2 , 2p 4 ) Q (1s 2 , 2s 2 , 2p 6 , 3s 2 ,3p 5 ) P ( 1s 2 , 2s 2 2p
What is the theoretical BOD of 1 liter of Coca-Cola. Assume all carbohydrates/sugars are sucrose. (Hint: use the Internet to find a label or look at a can. Be careful with serving
A covalent bond between two atoms is formed by which of the following: (1) Electron nuclear attraction (2) Electron sharing (3) Electron transfer (
when a 0.800g sample of CaCl2 is dissolved in 9.85g of water in a microscale calorimeter the temperature of the solution rose from 23.4 degrees celcius to 35.8 degrees celcius.calc
Covalent Bond Purely electrostatic attractions between ions are nondirectional, but with increasing covalent character the directional properties of valence orbitals become more
the reaction of kmno4 nd c2o4 .why does it produce brown colour first
The energy released when one mole of ionic crystal is produced by the combination of the corresponding gaseous (+ve) and (-ve) ions brought from infinite distance is known as latti
Q. Reactions with metals? Ans. Halogens commonly undergo reactions with metals. Halogens react with the alkali metal family, Group IA in the periodic table. For example,
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