Nutrition Society and, later on, the Biochemistry Society. He was a past chairman of the Central University Professors Association and the first council chair of the Chinese Nutrition Society. He had written many teaching materials and writing textbooks. Some of his textbooks are still in use, such as General Biochemistry. After the age of 100, he still taught and wrote books. He received many honorable certificates and awards in China and abroad. In 2010, Dr. E. Gordon Gee, president of the Ohio State University visited Zheng(Cheng) in Nanjing. Zheng turned 110 in May 2010 and at the time was claimed to be the oldest professor living in the world. He spent the greater part of his life teaching at the medical school and biology department of Nanjing University. He died on 29 July 2010. He was list as one of the great minds in China’s biophysics in the older generation of biophysicists in China. Award 21st-Century Award for Achievement, International Biographical Centre of Cambridge, England, 2003 International Man of the Year of 1992-1933 from the International Biographical Centre of Cambridge, England, 1993 A golden key fob from Sigma Xi, 1934 See also List of centenarians (scientists and mathematicians) References Chinese food scientists Nutritionists Chinese supercentenarians Men supercentenarians 1900 births 2010 deaths National Central University alumni Nanjing University alumni Writers from Yibin Educators from Sichuan Academic staff of the National Central University Chemists from Sichuan Chinese biochemists Yale University alumni Indiana University alumni Ohio University alumni Biologists from Sichuan