Bukspottkörtel b12

Vitamin B12, an essential nutrient, has numerous functions within the human body.

Also known as cobalamin, vitamin B12 plays an important role in DNA synthesis and energy production (1). According to the FDA&#;s guidelines, based on a calorie diet, the recommended daily value (% DV) for vitamin B12 is mcg per day (2).

While most animal-based foods contain vitamin B12, plant-based foods do not naturally contain the vitamin unless they have been fortified.

This article presents a list of 30 foods high in vitamin B12, arranged in descending order based on their B12 content.

For each food, values are provided per serving and per grams. All data is sourced from the USDA FoodData Central database.

1) Clams, mixed species, cooked

Clams are one of the most nutritious shellfish options, and they are full of vitamin B

A three-ounce (gram) serving provides a substantial mcg, accounting for % of the daily value (3).

Vitamin B12 per gramsVitamin B12 per 3oz (85g) serving
mcg (% DV) mcg (% DV)

2) Liver, lamb, cooked

Liver is exceptionally nutrient-rich, providing a significant amount of vitamin B12, along with other B vitamins like biotin, niacin, riboflavin,

  • bukspottkörtel b12

    • How to make sure you get enough from everyday foods

    Vitamin B12, required for proper brain function and a host of chemical reactions within the body, is found naturally only in animal foods. But if the typical vitamin B12 sources are not part of your regular diet or if your body has difficulty absorbing enough B12, there are other options.

    How B12 works in the body

    The Harvard Medical School Special Health Report Making Sense of Vitamins and Minerals explains that vitamin B12, like all B vitamins, is water soluble, which means the body expels what it does not use. Its main job is to maintain healthy nerve cells, support proper brain function, and assist in the production of DNA and RNA. B12 also works with other B vitamins to improve certain functions. For instance, B12 and B9 (folate) together help to make red blood cells. B12, B6, and B9 team up to control blood levels of the amino acid homocysteine, high levels of which have been associated with possible heart disease.

    B12 deficiency: Who is at risk?

    Most healthy adults get sufficient B12 from their regular diet. However, it is common for older people to have some level of B12 deficiency. This is often due to a poor d

    Vitamin B12, kobalamin

    Vitamin B12, kobalamin, är viktigt för lever, mjälte, bukspottkörtel, nervsystem, hjärnan, blod, benmärg, mage, njurar, testiklar, bröst, bronker samt leder.

    Historik

    • fick Minot, Murphy och Whipple nobelpris på grund av att dem kunde bota perniciös anemi, som dittills varit obotligt, med intag av rå lever. Castle fann beneath samma tid &#;intrinsic factor&#;.
    • isolerades inledande gången vitamin B12 ur lever från Lester Smith i England och Carl Folkers inom USA.
    • syntetiserades vitamin B12 för inledande gången.

    Matlagning

    Mer än hälften från B12 existerar i en instabilt status och förstörs lätt från matraffinering samt matberedning. 30% förstörs vid kokning.

    Kemi

    Vitamin B12 existerar en vattenlöslig, röd molekyl som innehåller mineralet kobolt. Den förstörs långsamt från starkt något som är surt i smak eller att vara på dåligt humör eller alkaliska ämnen, från ljus samt av oxiderande eller reducerande ämnen. Den finns tillgänglig i formerna cyano-kobalamin, hydroxy-kobalamin, metyl- kobalamin och aquo-kobalamin.

    Fördelar, nackdelar samt skillnader mellan cyanokobalamin samt metylkobalamin

    • Cyano- samt metylkobalamin äger samma grad av absorptionsbenägenhet eftersom enzymer spjälkar isär båda formerna till ren kobalamin såsom binds mot Intr