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April 2017
Dietetics
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VITAMIN B1

   VITAMIN B1

VITAMIN B1 (THIAMINE)
Vitamin B1 has an essential role in the metabolism of carbohydrates, acting in dozens of chain reactions.

  

WHAT IT IS
Thiamine is made up of a pyrimidine ring and a thiazole ring that is connected by a methylene bridge. Vitamin B1 promotes the transformation of carbohydrates into energy and helps the body to take advantage of this energy.
FOOD SOURCES
Thiamine is very common in plant and animal products. In plants there is a larger quantity of it, particularly in cereals where it can be found in the germ. Being hydrosoluble, a large quantity of vitamin B is lost during cooking: in pulses, around 40% is lost, in meats 30%, in eggs 25% and in cereals 10%.
REQUIREMENTS
The recommended amount, according to L.A.R.N., is: 0.4g/1000Kcal and a minimum of 0.8mg/day for those who’s diet is less than 2000Kcal/day. This is because thiamine is principally involved in energy metabolism.
DEFICIENCY
Thiamine deficiency causes problems with the metabolism of carbohydrates. Chronic deficiency of vitamin B1 can affect the nervous system, the cardiovascular system and the gastrointestinal system. When too much is consumed the excess is rapidly excreted in the urine.

VITAMIN B1

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