Vitamin b2: basic properties

Physical properties of riboflavin

In free form, vitamin B2 is bitter yellow-orange crystals. It dissolves poorly in water and ethyl alcohol, not dissolving in benzene, acetone, chloroform, and diethyl ether. Rapidly collapses in an alkaline environment, but is stable in acidic.

Riboflavin as a biochemical compound

For the human body, vitamin B2 is a biologically active substance. It is part of many redox enzymes, being a coenzyme. Flavin enzymes are necessary for oxidation of amber, fatty and other acids, inactivation and oxidation of highly toxic aldehydes, cleavage of D-isomers of foreign amino acids, which are result of bacterial activity. In addition, they are involved in the synthesis of folacin and vitamin B6.

Because riboflavin breaks down by the sun, it needs to be stored away from the sun’s rays. However, the vitamin is resistant to heat treatment.

Riboflavin is involved in energy metabolism and biological oxidation reactions. It is also necessary to construct the visual pigment rhodopsin, which protects the retina of the eye from harmful effects of ultraviolet, and to activate some other vitamins, including pyridoxin, vitamin K and folic acid.$

As manifests the lack of vitamin B2

Vitamin B2 is needed for the formation of red blood cells and antibodies, regulation of growth and reproductive functions, is important for skin, hair and nail health. Riboflavin deficiency can be externally manifested by cracks on the mucous lips, ulcations in the corners of the mouth, swelling and redness of the tongue, peeling of the skin on the lips, on the wings of the nose, nasolabial folds and ears. Light fear, conjunctivitis, keratitis and even cataracts may appear on the side of the visual organs. There may be anemia, disorders in the nervous system, muscle weakness, leg pain, etc.

Why there is a B2

deficiency B2 deficiency mainly develops due to insufficient consumption of foods containing this vitamin — for example, in unbalanced nutrition or a specific diet. Given the instability of riboflavin in light, it is necessary to store and defrost mushrooms, meat and vegetables in a dark place, and cook, covering with a lid. The lack of vitamin in the body can also be affected by diseases of the gastrointestinal tract, reducing absorption and absorption of food, and taking some medications.

An adult needs a day about 1,1-1.3 mg of vitamin B2. With significant physical and mental exertion, this need increases.

Vitamin B2 Sources


most vitamin B2 is found in liver, kidney, yeast, cottage cheese, eggs, almonds, mushrooms, porcini mushrooms and chanterelles. From plant products, riboflavin is especially rich in broccoli and cauliflower, cabbage, buckwheat. A little less vitamin in milk, rice, pasta, bread, fruits and vegetables.

Pharmacological preparations with vitamin B2 are used for the treatment and prevention of vitamin insufficiency, skin diseases and sluggish healing wounds, eye diseases, diabetes, anemia, cirrhosis of the liver, impaired function of the gastrointestinal tract. Medicines are released in the form of powder, tablets of different masses or ampoules containing 1 ml of solution for intramuscular administration. If overdosed, it is possible to stain urine yellow-orange.

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