April 22th, 2010

December 13th is "Vitamin day" in Japan, established in 2000.

In 1910 December 13th, Dr. Umetaro Suzuki presented vitamin B1 as "oryzenin"

in academic society of Tokyo Chemical Association.

This was the first presentation on Vitamin B1 in the world.

This year 2010 is its 100th anniversary.