3. j ladal (Kjeldahl method) method is a method to find the quantity of protein nitrogen, all based on the principle that there are proteins, nitrogen is the element. When boiling with concentrated acid, sanfiorik (H2SO4) with copper (II) sulfate (CuSO4) as a catalyst and potassium sulfate (K2SO4) is a cause of increased nitrogen solution is converted to ammonium sulfate and additives leaching mabai base such as sodium hydroxide (N.AOH) will change as ammonia ammonia starvation gate mahai in the chest side (NH4OH) ammonium gas distillation off (NH3) stored in the haidonkhlorik acid (HCl) solution that know the exact concentrations in more than enough. After that, you will find the quantity of ammonia in the breast side is happening mahai. By remaining with the acid substance trading tie each know Cyber medium stripes hydroxide concentration for sure. There is a Wi-di Methyl salicylate red k and then taking the sum of all quantities of nitrogen which can calculate the protein. It is the concentration of protein with sanfiorik acid boiling nitrogen (protein) is changed to ammonium sulfate mabai, with copper (II) sulphate as catalyst, and when additional bass down to ammonium sulfate is extracted as mabai ammonia.4. test the properties of proteins using sedimentation substances such as acid, Trichloroacetic acid, which has a negative charge (TCA) acid, tannic acid, picric acid, perchloric, but products are prachubuak. There are properties of neutral aqueous solution and cause product settling down.5. the principal new verb นไฮด Rin (Ninhydrin reaction) new นไฮด as well, along with a strong can make a SIM out reaction to all kinds of amino acids in aqueous solution with a pH of 4-8 has a complex compound purple but the rali and chest c the rali is hydro, yellow.
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