Premium
Analysis of iron chelates in plant extracts. II. —ferric ethylenediaminebis‐(o‐hydroxyphenylacetic acid)
Author(s) -
HillCottingham D. G.,
LloydJones C. P.
Publication year - 1963
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.2740140307
Subject(s) - chemistry , chelation , ferric , acetic acid , elution , adsorption , ammonia , activated charcoal , aqueous solution , ferric iron , charcoal , inorganic chemistry , nuclear chemistry , chelating resin , ion exchange resin , chromatography , organic chemistry , metal , ferrous , metal ions in aqueous solution
The behaviour of ethylenediaminebis‐(o‐hydroxyphenylacetic acid) (EDHPA, Chel 138) and its ferric iron chelate (Fe‐EDHPA) with activated charcoal and a cation‐exchange resin is described and procedures are proposed for the recovery of this chelating agent from plant extracts. Fe‐EDHPA in aqueous solution is adsorbed by activated charcoal and eluted by ethanolic ammonia. EDHPA in neutral or acid solution is adsorbed on the H + form of the cation‐exchange resin Zeocarb‐225 and is completely eluted by ethanolic ammonia. Fe‐EDHPA is held on this resin by working with solutions initially at pH I. The Fe‐EDHPA can be identified by paper chromatography. In addition, a modification is given for the previously‐proposed procedure for the detection of ethylenediaminetetra‐acetic acid in plant extracts.