Charge equilibria and pK(a) of malvidin-3-glucoside by electrophoresis

Paper electrophoresis has been used over the pH range 1.2 to 10.4 to measure apparent pK(a) values for malvidin-3-O-glucoside of pK(a(1)) 1.76+/-0.07, pK(a(2)) 5.36+/-0.04, and pK(a(3)) 8.39+/-0.07. Using solvent partitioning between buffered aqueous solutions and n-octanol, several micro-pK(a) cons...

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Veröffentlicht in:	Analytical biochemistry 2003-07, Vol.318 (2), p.291-299
Hauptverfasser:	Asenstorfer, Robert E, Iland, Patrick G, Tate, Max E, Jones, Graham P
Format:	Artikel
Sprache:	eng
Schlagworte:	Anthocyanins - chemistry Color Electrophoresis - methods Glucosides Hydrogen-Ion Concentration Ions - chemistry Isoelectric Point Molecular Structure Spectrophotometry, Ultraviolet Wine
Online-Zugang:	Volltext
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