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Thiamine, also known as thiamin and vitamin B 1, is a vitamin, an essential micronutrient for humans and animals. [3] [4] It is found in food and commercially synthesized to be a dietary supplement or medication. [1] [5] Phosphorylated forms of thiamine are required for some metabolic reactions, including the breakdown of glucose and amino ...
B vitamins are a class of water-soluble vitamins that play important roles in cell metabolism and synthesis of red blood cells. [ 1][ 2] They are a chemically diverse class of compounds. [ 1] Dietary supplements containing all eight are referred to as a vitamin B complex. Individual B vitamins are referred to by B-number or by chemical name ...
Sources. This enzyme can be found in a variety of different sources. It can be found in marine organisms, plants, and bacteria. Since thiamine (vitamin B 1) is a very important substance required for metabolic pathways by almost all organisms, it can be very detrimental to introduce Thiaminase to a system.
Inuit elders eating maktaaq. Historically, Inuit cuisine, which is taken here to include Greenlandic, Yupʼik and Aleut cuisine, consisted of a diet of animal source foods that were fished, hunted, and gathered locally. In the 20th century the Inuit diet began to change and by the 21st century the diet was closer to a Western diet.
Vitamin B 12 is the only vitamin or nutrient not available from plant sources. The Food Fortification Initiative lists countries which have mandatory fortification programs for vitamins folic acid, niacin, vitamin A and vitamins B 1 , B 2 and B 12 .
Animal-source foods are a diverse group of foods that are rich in bioavailable nutrients including calcium, iron, zinc, vitamins B12, vitamin D, choline, DHA, and EPA. [ 11] Animal-source and plant-based foods have complimentary nutrient profiles and balanced diets containing both reduce the risk of nutritional deficiencies. [ 11]
Dietary β-carotene is a provitamin A compound, converting in the body to retinol (vitamin A). [8] In foods, it has rich content in carrots , pumpkin , spinach , and sweet potato . [ 8 ] It is used as a dietary supplement and may be prescribed to treat erythropoietic protoporphyria , an inherited condition of sunlight sensitivity.
According to the U.S. National Institutes of Health, "natural food sources of vitamin B 12 are limited to foods that come from animals." [24] Like raw vegans who do not consume B 12-fortified foods (for example, certain plant milks and some breakfast cereals), fruitarians may need to include a B 12 supplement in their diet or risk vitamin B 12 ...