Abstract
Biotin is only a vitamin in 5 micronutrients that were newly collected in the Standard Tables of Food Composition in Japan in 2010. The recommended dietary intake amount of biotin has been set to be 30 μg/day by the Recommended Dietary Allowances for Japanese 6th Revision in 2000. The adequate intake amounts of biotin set by the Dietary Reference Intakes 2005 and 2010 are 45 and 50 μg/day, respectively. However, biotin had not been included in the Standard Tables of Food Composition in Japan. Thus, there is little evidence concerning the dietary intake of biotin. Herein, we will review the fundamental aspects and physiological roles of biotin, comparison of analytical methods for biotin, and precautions of using the Standard Tables of Food Composition for biotin.
