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Thiamine is a white crystalline substance, easily soluble in water, slightly in ethyl alcohol, but insoluble in ether and chloroform. Its smell is reminiscent of yeast. Thiamine is destroyed at elevated temperatures if the pH is high. It can withstand short boiling up to 100°C. Therefore, it is only partially lost during cooking or canning. Prolonged boiling or boiling in alkali destroys it. Stable in acidic environment. Grinding wheat flour significantly reduces the thiamine content, sometimes even up to 80%. Therefore, in many cases, wheat flour is usually synthetically fortified with thiamine.
Numerous components of amoxil pills complex are not chemically or physiologically related to each other, but still have several common features:
Riboflavin is a bright orange-yellow crystalline powder.
Pantothenic acid is a pale yellow viscous oil, soluble in water and ethyl acetate, but insoluble in chloroform. It is resistant to oxidizing and reducing agents, but is destroyed by heating in an acidic and alkaline environment. Niacin is the simplest of all existing vitamins. It is a white crystalline substance, soluble in ethyl alcohol. Heat resistant. Nicotinamide, a derivative of niacin, occurs as white needle-like crystals. It is soluble in water, resistant to heat and air. That is why cooking losses are usually minimal. Like thiamine, most of the vitamin B5 is lost during the grinding process.
The vitamin B6 group includes 3 compounds: pyridoxine, pyridoxal and pyridoxamine. All 3 forms of vitamin B6 are derivatives of pyridine, C 5 H 5 N and differ from each other in the nature of the substituent in the position of the 4th ring. All 3 forms are easily interchangeable biologically. Pyridoxine is a white crystalline substance and is soluble in water and alcohol, and slightly in fatty solvents. It is sensitive to light and ultraviolet radiation. Resistant to heat in both acidic and alkaline solutions, while pyridoxal and pyridoxamine are destroyed at high temperatures.
It is soluble in water and ethanol, but insoluble in ether and chloroform.
Resistant to heat and acids, but easily decomposed by alkalis and light. The aqueous solution has a yellow-green fluorescence. Withstands canning and cooking processes. Biotin has an unusual molecular structure. There are two forms of biotin: allobiotin and epibiotin. Biotin and thiamine are the only sulfur-containing vitamins isolated to date.
Vitamin B7 crystallizes in the form of long needles. Soluble in water and ethyl alcohol, but insoluble in chloroform and ether. It is heat resistant and resistant to buy Amoxicillin pills and alkalis. Has a melting point of 230°C. The folic acid molecule consists of 3 units, its molecular formula is C 19 H 19 O 6 N 7. The various B9 vitamins differ from each other in the number of glutamic acid groups present. Folic acid is a yellow crystalline substance, slightly soluble in water and insoluble in fatty solvents. It is resistant to heat only in alkaline or neutral solutions. Loses activity under the influence of sunlight.
Useful properties of B vitamins. B vitamins play a key role in the processes of DNA formation, being responsible for the speed of some processes. A severe deficiency of B vitamins can lead to failures in the formation of new cells and their uncontrolled growth, which, in turn, cancan cause cancer.
B vitamins, among other substances (such as vitamins C, D, E, omega-3s, fats, coenzyme Q10, lipoic acid), are very important for heart health. Particularly noteworthy is the role played by folic acid, B6 and B12 in lowering homocysteine levels. Although it has not been officially confirmed by medicine, many studies have observed high levels of homocysteine in fat deposits on the endothelium (the thin layer of cells that line the inside of blood vessels), as well as in blood clots and in heart disease.
Psychiatrists are also increasingly turning to B vitamins as a treatment.
Together with vitamin C, they help support an efficient adrenal response to stress. Many studies show that up to 30 percent of patients hospitalized with depression are deficient in B12. Several epidemiological studies have reported an association between low blood levels of folate, vitamins B6 and B12, and a higher prevalence of depressive symptoms. B-vitamin deficiency is also associated with anxiety disorder and, especially, obsessive-compulsive disorder. Many physicians begin to treat OCD with therapeutic doses of the vitamin inositol.
Each B vitamin is either a cofactor (usually a coenzyme) for key metabolic processes or a precursor needed to carry them out.
These vitamins are water-soluble, meaning they are not stored in the fatty tissues of the body, but are excreted in the urine. The absorption of B vitamins occurs in the digestive tract and usually requires certain substances (proteins) in the body to allow the vitamins to be absorbed.
Interaction with other elements.
The best food combinations for the absorption of B vitamins: 1 Pumpkin pudding with chia seeds. Ingredients: milk, pumpkin puree, chia seeds, maple syrup, sunflower seeds, almonds, fresh blueberries. Contains thiamine, biotin, proteins, fiber and many other beneficial substances. 2 Salad with quinoa and kale. Ingredients: quinoa, fresh kale, red cabbage, carrots, dill, boiled eggs, rice vinegar, extra virgin olive oil, ground black pepper. Contains riboflavin, biotin, folic acid and cobalamin.