THE INTERACTION OF THE VANADYL(IV) CATION WITH PHYTIC ACID

被引：21
|
作者：
WILLIAMS, PAM [1 ]
BARAN, EJ [1 ]
机构：
[1] NATL UNIV LA PLATA,FAC CIENCIAS EXACTAS,RA-1900 LA PLATA,ARGENTINA
来源：
BIOLOGICAL TRACE ELEMENT RESEARCH | 1993年 / 36卷 / 02期
关键词：
VANADYL(IV)-PHYTATE COMPLEXES; EFFECT OF THE PH VALUE; SOLUBLE AND INSOLUBLE COMPLEXES; SPECTROSCOPIC CHARACTERIZATION;
D O I：
10.1007/BF02783173
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
The interactions of VO2+ with phytate to form both soluble and insoluble complexes, have been studied by electronic absorption spectroscopy. A soluble 1:1 VO2+: phytate complex is formed at pH < 1. At higher pH-values insoluble complexes are produced. Two different solid complexes, obtained respectively at pH = 2 and 4, were isolated and characterized. The maximal bonding ratio of VO2+:phytate was found to be 4, on the basis of a pH binding profile.
引用
收藏
页码：143 / 150
页数：8
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