2017 Volume 33 Issue 1 Pages 3-8
We bought samples of 16 species of brown macroalgal seaweeds (class Phaeophyceae) in the genera Fucus, Ascophyllum, Sargassum, Saccharina, Undaria, Ecklonia, Eisenia, Chorda, Cladosiphon, Nemacystus, Petalonia, and Analipus from food markets. We acid-extracted polyamines from them for analysis by high-performance liquid chromatography and high-performance gas chromatography-mass spectrometry, and estimated molar concentrations of the polyamines. In 12 of the species we found not only diaminopropane, putrescine, cadaverine, spermidine, norspermidine, homospermidine, spermine, norspermine, thermospermine, and agmatine, but also a novel long diamine, 1,6-diaminohexane. All species held caldopentamine and homocaldopentamine. Some species had minor contents of thermopentamine and caldohexamine. The brown-algal seaweeds are much richer in long linear polyamines than multicellular green- and red-algal seaweeds.
