Calories Fast food, roast beef sandwich, unflavored. Chemical composition and nutritional value.

Nutritional value and chemical composition.

The energy value is 244 kcal.

• sandwich = 139 g (339.2 kCal)

• Vitamin B1 is part of the most important enzymes of carbohydrate and energy metabolism, which provide the body with energy and plastic substances, as well as the metabolism of branched-chain amino acids. Lack of this vitamin leads to serious disorders of the nervous, digestive and cardiovascular systems.
• Vitamin B2 participates in redox reactions, enhances the color sensitivity of the visual analyzer and dark adaptation. Insufficient intake of vitamin B2 is accompanied by a violation of the condition of the skin, mucous membranes, impaired light and twilight vision.
• Vitamin B6 as a coenzyme, they participate in the metabolism of nucleic acids and amino acids. Folate deficiency leads to impaired synthesis of nucleic acids and protein, which results in inhibition of cell growth and division, especially in rapidly proliferating tissues: bone marrow, intestinal epithelium, etc. Insufficient consumption of folate during pregnancy is one of the causes of prematurity, malnutrition, congenital malformations and developmental disorders of the child. A strong association has been shown between folate and homocysteine ​​levels and the risk of cardiovascular disease.
• Vitamin B12 plays an important role in the metabolism and conversion of amino acids. Folate and vitamin B12 are interrelated vitamins and are involved in blood formation. Lack of vitamin B12 leads to the development of partial or secondary folate deficiency, as well as anemia, leukopenia, thrombocytopenia.
• Vitamin PP participates in redox reactions of energy metabolism. Insufficient vitamin intake is accompanied by disruption of the normal state of the skin, gastrointestinal tract and nervous system.
• Phosphorus takes part in many physiological processes, including energy metabolism, regulates acid-base balance, is a part of phospholipids, nucleotides and nucleic acids, is necessary for the mineralization of bones and teeth. Deficiency leads to anorexia, anemia, rickets.
• Iron is a part of proteins of various functions, including enzymes. Participates in the transport of electrons, oxygen, ensures the course of redox reactions and activation of peroxidation. Insufficient consumption leads to hypochromic anemia, myoglobin-deficient atony of skeletal muscles, increased fatigue, myocardiopathy, atrophic gastritis.
• Manganese participates in the formation of bone and connective tissue, is part of the enzymes involved in the metabolism of amino acids, carbohydrates, catecholamines; essential for the synthesis of cholesterol and nucleotides. Insufficient consumption is accompanied by a slowdown in growth, disorders in the reproductive system, increased fragility of bone tissue, disorders of carbohydrate and lipid metabolism.
• Selenium – an essential element of the antioxidant defense system of the human body, has an immunomodulatory effect, participates in the regulation of the action of thyroid hormones. Deficiency leads to Kashin-Beck disease (osteoarthritis with multiple deformities of the joints, spine and extremities), Keshan disease (endemic myocardiopathy), hereditary thrombastenia.
• Zinc is a part of more than 300 enzymes, participates in the processes of synthesis and decomposition of carbohydrates, proteins, fats, nucleic acids and in the regulation of the expression of a number of genes. Insufficient consumption leads to anemia, secondary immunodeficiency, liver cirrhosis, sexual dysfunction, and fetal malformations. Recent studies have revealed the ability of high doses of zinc to disrupt copper absorption and thereby contribute to the development of anemia.