Michiyo Tsujimura (辻村みちよ, 17 September 1888 - 1 June 1969). Michiyo Tsujimura was a Japanese agricultural scientist and biochemist whose research focused on the components of green tea. She was the first woman in Japan to receive a doctoral degree in agriculture. Michiyo Tsujimura and her colleague Seitaro Miura discovered green tea to be a natural source of vitamin C.