Marguerite Davis

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For the art patron, socialite, and heiress to a railroad fortune, see Marguerite Sawyer Hill Davis.
Marguerite Davis
Born(1887-09-16)September 16, 1887
Racine, Wisconsin, U.S.
DiedSeptember 19, 1967(1967-09-19) (aged 80)
Racine, Wisconsin
Alma materUniversity of California, Berkeley
Known forDiscovering Vitamin A and B
Scientific career
FieldsBiochemist
InstitutionsUniversity of Wisconsin

Marguerite Davis (September 16, 1887 – September 19, 1967) was an American biochemist, co-discoverer of vitamins A and B with Elmer Verner McCollum in 1913.[1] Their research greatly influenced later research on nutrition.

Early life

Davis was born on September 16, 1887, in Racine, Wisconsin, to John Jefferson Davis, a local physician and botanist, who taught at the University of Wisconsin.[2] In his 1964 autobiography, Elmer Verner McCollum says that Davis was physically handicapped by severe burns that she received at age ten while playing at a bonfire when her clothing caught fire.[3]

Education

Davis' background and scientific interests led her to enroll at the University of Wisconsin in 1906. In 1908, she transferred to the University of California at Berkeley and received her bachelor of science degree in home economics in 1910.[4] After graduation, Davis returned to the University of Wisconsin where she completed some graduate work, but did not complete a master's degree. At the University of Wisconsin, Davis began her work as a research assistant with McCollum.[2]

Discovery of vitamins A and B

Highest rates are in sub-Saharan Africa 48 percent and South Asia 44 percent[5]

Davis worked as an assistant for McCollum, caring for a large rat colony and helping expand it. Davis helped McCollum carry out "ten or more times as many experiments as [he] alone could manage".[6] They were attempting to create mixtures that could replace food in animal diets, specifically studying trace chemicals in foods that are essential to life.[7] These substances were called "vitamines", as they hypothesized that they were the organic molecule "amines".[7]

In 1913, Davis and McCollum identified what they called "fat-soluble A", a substance found in fats that is essential to life. They distinguished it from another substance described by Dutch chemist Christiaan Eijkman, which they studied and called "water-soluble B." These were later renamed Vitamins A and B,[8] after long research on rats.[9] The discovery of two vitamins paved the way to further research in nutrition.

Their discovery of fat-soluble Vitamin A and water-soluble Vitamin B was first published in the Journal of Biological Chemistry in 1913 in the paper "The Necessity of Certain Lipins in the Diet during Growth".[2][10]

Career

Davis founded the nutrition laboratories at the University of Wisconsin–Madison.[11] She briefly moved to New Jersey to work for the Squibb Pharmaceutical Company and later helped Rutgers University form a nutrition lab as part of its Ernest Mario School of Pharmacy. In 1940, she returned to the University of Wisconsin to teach and do research for a number of years.[12]

In 1940, Davis retired, returning to her hometown of Racine to live with her brother, John Archibald “Archie” Davis, in their family home.[13] Davis pursued history and gardening after her retirement, and was active in local civic affairs. She was recognized for her contributions as a civic leader by Racine's Women's Civic Council in 1958.[12] Davis died in Racine three days after her eightieth birthday on September 19, 1967.[11][12]

In his 1964 autobiography, McCollum attributes his success in nutrition research to two people: Davis and Stephen Babcock. Davis worked in McCollum's lab from 1909 to 1916. McCollum asked annually for a salary for Davis, but was denied up until her last year.[11] She was unpaid for 5 years, and was paid $600 in her sixth, and final year.[14] After Davis left Madison, the rat colony that Davis helped build and care for was cared for by Nina Simmonds from 1916 to 1929.[14]

Notes

  1. ↑ "Chemical & Engineering News: Top Pharmaceuticals: Vitamins". pubs.acs.org. Archived from the original on 2018-12-15. Retrieved 2016-02-24.
  2. ↑ 2.0 2.1 2.2 "Racine History - Diplomat, Author, Vitamin Co-Discoverer Have Occupied 'The House on the Hill'". www.vindustries.com. Archived from the original on 2024-09-11. Retrieved 2021-01-19.
  3. ↑ McCollum, Elmer Verner (1964). From Kansas Farm Boy to Scientist. Lawrence: University of Kansas Press. p. 124.
  4. ↑ Prengaman, Kate (Fall 2013). "The Birth of Vitamin A". OnWisconsin. Wisconsin Alumni Association. Archived from the original on June 25, 2016. Retrieved June 10, 2016.
  5. ↑ "Vitamin A deficiency". UNICEF. Archived from the original on 11 September 2016. Retrieved 5 September 2024.
  6. ↑ McCollum, Elmer Verner (1967). "The paths to the discovery of vitamins A and D." (PDF). The Journal of Nutrition. 91 (2): 11–16. doi:10.1093/jn/91.2_Suppl.11. PMID 5335920. Archived (PDF) from the original on 2024-09-08. Retrieved 2024-01-24.
  7. ↑ 7.0 7.1 "The First Vitamins". Science | AAAS. 1997-09-17. Archived from the original on 2024-09-08. Retrieved 2021-01-19.
  8. ↑ Harvey, Joy; Ogilvie, Marilyn (2000-07-27). The Biographical Dictionary of Women in Science: Pioneering Lives from Ancient Times to the Mid-Twentieth Century. Taylor & Francis. p. 674. ISBN 9780203801451. Archived from the original on 2024-09-08. Retrieved 2024-01-24.
  9. ↑ Frankenburg, Frances Rachel (2009-01-01). Vitamin Discoveries and Disasters: History, Science, and Controversies. ABC-CLIO. p. 6. ISBN 9780313354755.
  10. ↑ Newcomb, Eldon (Summer 2006). "J. J. Davis and His Daughter, Marguerite" (PDF). University of Wisconsin Department of Botany Alumni Newsletter. pp. 8–10. Archived (PDF) from the original on 20 May 2023. Retrieved 24 March 2023.
  11. ↑ 11.0 11.1 11.2 Schneider, Caroline (25 February 2020). "'The Sweeping Landscape of Her Work'". Grow. University of Wisconsin–Madison. Archived from the original on 8 September 2024. Retrieved 24 March 2023.
  12. ↑ 12.0 12.1 12.2 "Marguerite Davis Biography (1887-1967)". FAQs.org via Advameg. Archived from the original on September 8, 2024. Retrieved June 10, 2016.
  13. ↑ Racine Heritage Museum (17 January 2017). "Racine Remembers: Reform Tradition". Local News I Racine County Eye - Racine, Wisconsin. Archived from the original on 26 January 2022. Retrieved 24 March 2023.
  14. ↑ 14.0 14.1 Day, H. G. (1974). "Elmer Verner McCollum". Biographical Memoirs. National Academy of Sciences. 45: 263–335. PMID 11615648. Archived from the original on 2023-10-26. Retrieved 2024-01-24.

External links

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