Albumin

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Description

A naturally occurring, water-soluble protein found in egg white , milk, and blood. When spelled as albumen, the use generally refers to egg white proteins used in the food industry and in 19th century photographic emulsions. Albumin is a strong, coagulating protein that is used in adhesives, paper coatings, lithographic, and photographic emulsions, textile dyeing, gilding leather, paint binders, and varnishes. Dried albumin powder is yellowish and forms a colorless solution in water. Albumin protein will remain water soluble used unless heated to temperatures above 50C (122F) or exposed to intense or long-term light. Medicinally, it is used as an antidote for mercury poisoning.

See also casein.

Synonyms and Related Terms

albumen; egg white; alb├║mina (Esp.); albumine (Fr.); albumina (It.); albumina (Port.)

Other Properties

Soluble in water, ethanol.

Additional Information

J.S. Mills, R.White, The Organic Chemistry of Museum Objects, Butterworth Heinemann, London, 1994.

Sources Checked for Data in Record

  • Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
  • The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998
  • G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 22
  • Matte Paint: Its history and technology, analysis, properties and conservation treatment, Eric Hansen, Sue Walston, Mitchell Bishop (ed.), J. Paul Getty Trust, Los Angeles, Vol. 30 of AATA, 1993
  • John S. Mills, Raymond White, The Organic Chemistry of Museum Objects, Butterworth Heineman, London, 2nd ed., 1994

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