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Plant proteins. V.—proteins and amino‐acids of marine algae
Author(s) -
Coulson C. B.
Publication year - 1955
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.2740061106
Subject(s) - ninhydrin , algae , amino acid , hydrolysate , extraction (chemistry) , chemistry , biochemistry , chromatography , biology , botany , hydrolysis
Proteins have been extracted from three main classes of marine algae, and a large‐scale extraction of protein from Rhodymenia palmata has been carried out. The approximate amino‐acid composition of four proteins has been determined using a rapid method of direct estimation on two‐dimensional paper chromatograms. It is found that algal proteins differ little qualitatively from those of land plants. A preliminary examination has been made of ninhydrin‐reactive substances from the ethanolic extracts of dried marine algae and unknown ninhydrin‐reactive substances (possibly iodo‐amino‐acids) in the alkaline hydrolysates of R. palmata protein. The problem of alginate interference in protein extraction is discussed.