Michiyo Tsujimura Birth Anniversary: Google Doodle Honours Japanese Scientist Whose Research Focused on Green Tea Components

Michiyo Tsujimura , Google Doodle, Green Tea, Michiyo Tsujimura Birth Anniversary

 Google celebrated the 133rd birth anniversary of Japanese educator and biochemist Michio Tsujimura, whose research focused on components of green tea, with a doodle. Tsujimura was the first woman in Japan to receive a doctorate in agriculture. Thanks to Tsujimura, and his groundbreaking research into the nutritional benefits of green tea, science today has the answer to why green tea tastes so bitter when steeped for too long.

Michiyo Tsujimura , Google Doodle, Green Tea, Michiyo Tsujimura Birth Anniversary

(Image: Screengrab/Google page)

Tsujimura was the first woman in Japan to receive a doctorate in agriculture. (Image: ScreenGrab/Google Pages)

Tsujimura was born on this day in 1888 in Okegawa, Saitama Prefecture, Japan. He spent his early career teaching science. In 1920, he pursued his dream of becoming a scientific researcher at Hokkaido Imperial University, where he began analyzing the nutritional properties of the Japanese silkworm.

A few years later, Tsujimura transferred to Tokyo Imperial University and began researching the biochemistry of green tea with Dr. Umetaro Suzuki, who was famous for his discovery of vitamin B1. Their joint research showed that green tea contained significant amounts of vitamin C—the first of several unknown molecular compounds in green tea that awaited under the microscope.

In 1929, he isolated catechins—a bitter ingredient in tea. Then, the next year he isolated tannins, an even more bitter compound. These findings laid the foundation for her doctoral thesis, "On the Chemical Components of Green Tea", when she graduated in 1932 as Japan's first female doctor of agriculture.

Outside of his research, Dr. Tsujimura also made history as a teacher when he became the first dean of the Faculty of Home Economics at Tokyo Women's Higher Normal School in 1950. Today, a stone monument in honor of Dr. Tsujimura's achievements can be found in his birthplace of Okegawa City.

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