William Z. Hassid

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William Zev Hassid (born October 1, 1897 or 1899 in Jaffa , Ottoman Empire ; died April 28, 1974 in Berkeley , California ) was an American biochemist at the University of California, Berkeley . He is best known for his contributions to the chemistry of carbohydrates and polysaccharides .

Live and act

Ze'ev Hassid was probably born in 1899 to Jewish immigrants from Poland in Jaffa, Palestine , which was then part of the Ottoman Empire. Occasionally, however, he also gave 1897 or 1901 as the year of birth. He grew up mostly near Kremenez ( Russian Empire , now Ukraine ). In Petach Tikwa , Palestine, he attended the agricultural school from 1914. In the First World War he was a soldier in the First Judeans Regiment of the British Army , he received British citizenship.

In 1920 Hassid went to the United States, where he took the first name William. He did not realize his plan to return to Palestine to help build up agriculture there. He later took on American citizenship. He received a bachelor's degree from the University of California, Berkeley in 1925 , a master 's degree in 1930 and a Ph.D. in 1934 with Walter H. Dore. in plant physiology . The title of the doctorate was A study of the carbohydrates in the plant Irideae laminarioides with particular reference to galactan . From around 1927 he was employed by Dennis R. Hoagland in the plant nutrition department , where Hassid was finally given a full professorship in 1947 after various positions as assistant, lecturer and assistant professor. In 1959 he became a professor of biochemistry , in 1965 he retired , but was still scientifically active at the Agricultural Experiment Station .

Hassid and co-workers were able to make significant contributions to the elucidation of the biosynthetic metabolic pathways of various carbohydrates from plants and microorganisms. The first application of radioactive labels in photosynthesis research happened in 1939 by Hassid, Sam Ruben and Martin Kamen . Hassid, Michael Doudoroff and Horace A. Barker succeeded for the first time in the synthesis of sucrose (crystal sugar) in 1944 . Hassid's students included Helene Babad , Victor Ginsburg , Elizabeth F. Neufeld , Donald A. Rappoport and Winifred M. Watkins .

William Zev Hassid was married to Lila Berlin Fenigston since 1936; the couple had no children.

Awards (selection)

literature

Web links

Individual evidence

  1. ^ S. Ruben, MD Kamen, WZ Hassid, DC Devault: PHOTOSYNTHESIS WITH RADIO-CARBON. In: Science . Volume 90, Number 2346, December 1939, pp. 570-571, doi: 10.1126 / science.90.2346.570 , PMID 17830704 .
  2. ^ S. Ruben, WZ Hassid, MD Kamen: RADIOACTIVE NITROGEN IN THE STUDY OF N2 FIXATION BY NON-LEGUMINOUS PLANTS. In: Science . Volume 91, Number 2372, June 1940, pp. 578-579, doi: 10.1126 / science.91.2372.578 , PMID 17758847 .
  3. ^ HA Barker, WZ Hassid, M. Doudoroff: ENZYMATIC SYNTHESIS OF CRYSTALLINE SUCROSE. In: Science . Volume 100, Number 2586, July 1944, p. 51, doi: 10.1126 / science.100.2586.51 , PMID 17758920 .
  4. ^ Sugar Research Foundation Prize. In: Nature. 162, 1948, p. 769, doi: 10.1038 / 162769b0 .
  5. ^ A b William Z. Hassid. In: gf.org. John Simon Guggenheim Foundation, accessed March 28, 2020 .
  6. ^ William Z. Hassid. In: nasonline.org. National Academy of Sciences , accessed March 28, 2020 .
  7. ^ Claude S. Hudson Award. In: acscarb.org. ACS Division of Carbohydrate Chemistry, accessed March 28, 2020 .
  8. ↑ Book of Members 1780 – present, Chapter W. (PDF; 852 kB) In: American Academy of Arts and Sciences (amacad.org). Retrieved March 28, 2020 (English).
personal data
SURNAME Hassid, William Z.
ALTERNATIVE NAMES Hassid, William; Hassid, William Zev; Hassid, William Ze'ev; Hassid, Zev; Hassid, Ze'ev
BRIEF DESCRIPTION American biochemist
DATE OF BIRTH October 1, 1897 or October 1, 1899
PLACE OF BIRTH Jaffa , Ottoman Empire
DATE OF DEATH April 28, 1974
Place of death Berkeley , California