Albuminates
Historical document, translated for reference. It reflects medical knowledge of the 1920s–30s and is not medical advice.
Summary
Albuminates are products of protein denaturation by alkalis and acids, characterized by partial loss of nitrogen and sulfur from the protein. They are insoluble in water but dissolve in the presence of small amounts of acids or alkalis, and lose optical activity during formation.
Encyclopedia entry (1928–1936)
Albuminates, products of protein denaturation under the influence of alkalis (alkali-A.) and acids (acid-A.). The formation of A. is accompanied by the cleavage of part of the nitrogen and sulfur from the protein. A. are almost insoluble in water and weak NaCl solutions, but easily dissolve in the presence of small amounts of acids or alkalis. Such solutions do not coagulate when boiled; upon precise neutralization, A. precipitate. Strong mineral acids precipitate A. In the formation of alkali-A., the protein loses its optical activity (racemizes) and becomes more difficult to digest by proteolytic enzymes.
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“Albuminates.” Soviet Medical Encyclopedia. English translation of Bolshaya Meditsinskaya Entsiklopediya, 1st ed. (Moscow, 1928–1936), ed. N. A. Semashko. https://sovietmedicalencyclopedia.pages.dev/article/albuminates/