Determine the Foos Sources of cyanocobalamin?
Vitamin BI2 is unique among vitamins in the sense that it is mostly found in foods of animal origin but is not generally present in plant products as also is evident from the food sources highlighted herewith and in Figure.
- Rich sources: Liver (goal, sheep, ox, pig).
- Good sources: Meal, fish, egg, kidney, brain.
- Fail Sources: Fresh milk, milk powder and cheese.
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Most microorganisms, including bacteria and algae, synthesize vitamin B12, and they constitute the only source of the vitamin. The vitamin BI2 synthesized in microorganisms enters the human food chain through incorporation into food of animal origin. In many animals, gastrointestinal fermentation supports the growth of these vitamin B12 synthesizing microorganisms, and subsequently the vitamin is absorbed and incorporated into the animal tissues. This is particularly true for the liver, where vitamin B12 is stored in large concentrations. Products from herbivorous animals, such as milk, meat and eggs, thus constitute important dietary sources of the vitamin.
Humans, therefore, derive dietary vitamin B12 almost exclusively from animal issues or products (i.e. milk, butter, cheese, eggs, meal, poultlry). Considering the fact that this vitamin intake can only be assured through animal food sources, vegetarians, therefore, have to be very cautious about meeting their vitamin B12 requirements, and are hence often advised to increase their milk intake or take vitamin B12 as a supplement.