Biotin is generally classified as a B-complex vitamin. Biotin is
required by all organisms but can only be synthesized by bacteria,
yeasts, molds, algae, and some plants.
Biotin has been attached
to four enzymes, each responsible for an essential metabolic reaction.
As part of these reactions biotin is partly responsible for the
synthesis of fatty acids, the formation of glucose from
non-carbohydrate sources (amino acids & fats), the metablolism of
leucine, and the metabolism of some odd chain fatty acids. It has also
been suggested that biotin may play a role in DNA replication and
transcription.
Currently there is not
a recommended daily allowance (RDA) for Biotin; however, there is an
official adequate intake level (AI). The AI for biotin assumes that
35 mcg to 60 mcg/day meets the dietary requirement.
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