Google doodle celebrates Michiyo Tsujimura's 133rd Birthday

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Michiyo Tsujimura, was born on 17 September, 1888, in Okegawa, Saitama Prefecture, Japan. She spent her early career, teaching science. In 1920, she chased her dream, of becoming a scientific researcher, at Hokkaido Imperial University, where she began to analyze the nutritional properties, of Japanese silkworms.  

A few years later, Tsujimura, transferred to Tokyo Imperial University, and began researching the biochemistry of green tea, alongside Dr. Umetaro Suzuki, famed for his discovery of vitamin B1. Their joint research revealed that, green tea contained significant amounts of vitamin C, the first of many, yet unknown molecular compounds in green tea, that awaited under the microscope. In 1929, she isolated catechin, a bitter ingredient of tea. Then, the next year she isolated tannin, an even more bitter compound. These findings formed the foundation for her doctoral thesis, “On the Chemical Components of Green Tea”, when she graduated as Japan’s first woman doctor of agriculture, in 1932. 

Outside of her research, Dr. Tsujimura also made history, as an educator, when she became, the first Dean of the Faculty of Home Economics, at Tokyo Women’s Higher Normal School, in 1950. Today, a stone memorial in honor of Dr.Tsujimura’s achievements can be found in her birthplace of Okegawa City.  

Happy Birthday, Michiyo Tsujimura!


 

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