Biuret and protein reaction principle
The principle of the reaction between biuret and protein was that biuret could react with copper sulfuric acid to form a purple substance. This might be caused by the peptidic bond structure in the biuret molecules. The nitrogen atom of the peptidic bond would form a purple complex with Cu2 + ions. Because there was also a peptidic bond structure in the protein, such a reaction would also occur. We called the purple reaction between the compound containing the peptidic bond structure and copper sulfuric acid solution "biuret reaction". In other words, as long as the molecules contained a peptidic bond, this characteristic purple reaction would generally occur. It wasn't that biuret reacted directly with the protein, but the reaction between the peptidic bond in the protein and copper ions. It was the same reaction type as biuret and copper ions. It was a " biuret reaction." When carrying out experiments related to the biuret reaction, biuret reagent A was a strong base, and biuret reagent B was copper sulfuric acid. When using it, add A to the protein solution first, shake it up, and then add B. Strong base and copper sulfuric acid can denature the protein, but this does not affect the purple reaction, because the essence of protein degeneration is that the spatial structure is destroyed, causing it to settle and lose its physiological activity. However, the bond structure and the sequence of the protein chain are generally not destroyed. Read more exciting novels for free
Biuret reagent test protein reaction conclusion
When the biuret reagent was used to detect protein, when the base contained a peptidic bond (a peptidic bond), the copper in the test solution would coordinate with the peptidic bond, and the complex would turn purple. The color of the purple complex produced by the reaction was directly proportional to the concentration of the protein, and it had nothing to do with the molecular weight of the protein and the composition of the protein. The concentration could be analyzed by a prismatic method, and the wave-length in the ultraviolet-visible spectrum was 540mn. The sensitivity of the identification reaction was 5 - 160g/ml, and the identification reaction protein unit was 1 - 10g. Moreover, the compound molecules that could produce a purple reaction with the biuret reagent contained at least two peptidic bonds, so dipeptides could not be tested with it. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Is there a biuret reaction in the presence of vitamins C?
There was no biuret reaction in the presence of vitamin C. The biuret reaction was a reaction of a protein under the action of a biuret reagent, which would produce a purple complex. However, the biuret reaction could not occur due to the lack of structural properties of the protein. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The opsonizing reaction of the protein protein
If the patient has an allergic constitution and is allergic to the protein, it may induce an allergic reaction after use, causing symptoms such as itchy skin, redness, swelling, and even difficulty breathing. If you don't follow the doctor's advice and take the medicine on time, it may stimulate the stomach and intestines, causing discomfort such as loss of appetite, abdominal distension, and abdominal pain. Since the protein was mainly digested by the liver and kidneys, excessive use would increase the burden on the liver and kidneys. The kidneys might have oliguria, anuria, lumbago and other symptoms. The liver might have loss of appetite, abdominal distension, abdominal pain, yellow skin, nausea and other symptoms. It might also lead to increased burden on the heart, chest tightness, short breath and other discomfort. The novel " Watching the Moon on Fish Island " is equally exciting. Everyone is welcome to click and read it!
Reaction of Bromate with a protein
It could react with the protein in the wheat flour to enhance the strength and elasticity of the flour, forming a good network of flour, thus significantly improving the baking effect of flour. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Principle of Allergen Reaction
Allergy reactions are caused by some people being overly sensitive to the substances (allergens) they come into contact with. When a sensitive individual comes into contact with a foreign, harmless substance (an allergy), the immune system will overreact and the body will produce a type of protein specific to the allergy. These IgE-bound to the high-affinity receptor on mast cells and basophils. When the allergy entered the body again and met with these bound molecules, the form of the immune receptor would change from a dimmer to a monolith. This change in form would lead to the exposure of the protein sites of the relevant signaling pathways, which would activate the downstream signaling pathways, causing allergic reactions such as vasodilation and bronchiectomy. In severe cases, it could cause allergic shock. In an allergic reaction, the affected organs or tissues will be infiltrated by a large number of inflammatory cells (especially those that are not activated), and a high concentration of IgE will appear in the serum. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The reaction between urine and biuret reagent before exercise
There was no protein in urine, so there was no purple reaction between urine and biuret reagent before exercise. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Reaction Principle of Acid and Nitrite
The principle of the reaction between the two substances was that the reaction between the two substances would produce NaCl2, H2O, NO, and NO2. The reaction equation was 2NaNO2 + 2HQ = 2NaCl2 + H2O + NO + NO2. This was mainly due to the fact that the nitrogen acid was unstable and would decompose quickly. Moreover, nitrogen acid was a weak acid. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Baby's C-reaction protein is 13.25
C-reaction protein is an acute phase reaction protein synthesized by the liver. The normal range is generally 0 - 10 milligrams per liter (the normal range for children may be slightly different due to factors such as the test method and age). The baby's C-reaction protein value is 13.25 milligrams per liter, which is higher than the normal range, indicating that there may be an inflammation reaction. This may be due to bacteria infection, purgative infection, tissue necroses, malignant tumors, Connective tissue diseases, acute rejection of organ transplants, etc. However, in children, bacteria infection is more common. For example, C-reaction protein will rise 6 - 8 hours after infection, and reach a peak at 24 - 48 hours. It will gradually return to normal about a week after the infection is resolved. However, C-reaction protein was not specific. It might also be slightly elevated in viral infection, but it was often not as obvious as in bacteria infection. It could also be a local tissue damage. It was necessary to combine the baby's specific symptoms, such as whether there was fever, cough, diarrhea, etc. At the same time, complete the blood routine, blood transfusion rate, procalcitonin, and other related tests to further determine the cause. If the baby has any symptoms of discomfort, he should seek medical advice promptly and be diagnosed and treated under the guidance of a professional doctor. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Blood cell C-reaction protein 75
C-reaction protein 75 was a relatively obvious increase, which could be caused by many factors. The concentration of C-reaction protein in a normal human body is about less than 2.87 milligrams per liter.(Different testing methods and institutions may have slight fluctuations, generally between 0 - 8 milligrams per liter.) When the body has suppurative infection, cardiovascular disease, severe trauma, major surgery, burns, malignant tumors, Connective tissue disease, acute rejection of organ transplantation, etc., the concentration of C-responsive protein will increase. For children, bacteria, viruses, Kawasaki disease, rheumatism immune diseases, or vaccine may cause it to increase. Although elevated C-reaction protein may indicate an increased likelihood of a bacteria infection,(For example, when the CPR is higher than 20 milligrams per liter, the doctor will think that the possibility of being infected by bacteria is higher, but this is not absolute. It also needs to be combined with the changes in white blood cells and other comprehensive judgments.) However, inflammation does not mean that it is a bacteria infection, nor does it mean that anti-inflammatory drugs need to be used. For example, the CPR of viral infection is often higher than 10 - 40. As the CPR increases further, the possibility of bacteria infection will increase. In the China Evidence-based guidelines for acute fever in 0 - 5 years of age, when the CPR was greater than 40, the possibility of diagnosis of serious bacteria infection was higher, and when the CPR was greater than 80, the possibility of diagnosis of serious bacteria infection was higher, but even so, it was not absolute. If one wanted to completely assess the severity of a patient's condition, they could not rely solely on C-reaction protein. They should combine the patient's overall symptoms, physical signs, and more laboratory test results to make a judgment. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The Light Reaction Principle of Purple Light
The reaction principle of the purple light was as follows: The fluorescent reaction of a purple light lamp was based on the principle of luminescence. When a violet light (a violet flashlight) shone on certain substances, these substances would selectively absorb the violet light emitted by the violet light. The molecules would be stimulated, and they would emit visible light of the same wavelength and different intensity. When the light stopped, the fluorescence disappeared. When the infrared rays hit the fluorescent substance, there were three general situations: part of the infrared rays were reflected; part of the infrared rays were absorbed by the fluorescent substance; and part of the infrared rays were transmitted. The fluorescence occurred due to the absorption of the fluorescent substance. After the fluorescent substance absorbed the infrared rays, the internal energy state of the molecules changed, showing a transition between different energy levels and releasing fluorescence. For the Lighthouse series of purple lamps, the principle of light was to bombard the special fluorescent material inside the lamp with electric arcs after being energized, and then produce purple spectrum light waves. The violet light could be divided into the UUA band (320 - 400 <anno data-annotation-id ="00000100 - 400a-400a-400a-800a-8000000000000"> wave-length </anno>), the UVP band (275 - 320 </anno>), the UVP band (200 - 275 </anno>), and the UVR band (100 - 200 </anno>). Among them, the fluorescent powder in the purple tube could convert the arc energy into long-wave violet radiation in the UVA-band, such as the UVA-band of 340 - 380 run, and the UVA-band of 365 run was more suitable for checking the fine traces of the collection and fluorescent anti-counterfeit work. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>