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Determination of Carbonyl Groups in Starches by Polarographic Techniques Using o ‐Phenylenediamine. V. Reactions of Periodate Oxidized Starches with o ‐Phenylenediamine.
Author(s) -
Takagi M.,
Mizutani M.,
Nishio T.,
Ono S.
Publication year - 1970
Publication title -
starch ‐ stärke
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.62
H-Index - 82
eISSN - 1521-379X
pISSN - 0038-9056
DOI - 10.1002/star.19700220504
Subject(s) - polarography , o phenylenediamine , chemistry , quinoxaline , periodate , nuclear chemistry , detection limit , polymer chemistry , medicinal chemistry , organic chemistry , inorganic chemistry , chromatography , catalysis
The reaction of oxyamylose with o ‐phenylenediamine (OPD) in alkaline media produces quinoxalines which can be followed by polarographic method and the dialdehyde content can easily be determined polarographically. The lower limit of the determination of dialdehyde content may be 0.01 in the ratio of NaIO 4 /AGU. Quinoxalines produced from oxyamylose were studied chromatographically and spectrophotometrically and compared with those from D‐glucose. Three quinoxalines were identified with quinoxaline, 2‐methylquinoxaline and 2‐hydroxyethylquinoxaline. Mechanism of the reaction of oxyamylose with OPD is discussed.