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Disodium dicarboxy methyl starch as a calcium sequestrant
Author(s) -
Santhanagopalan S.,
Raman H.,
Suri S. K.
Publication year - 1984
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02636268
Subject(s) - chemistry , calcium , chelation , starch , malonate , sodium , sodium citrate , derivative (finance) , nuclear chemistry , inorganic chemistry , organic chemistry , medicine , pathology , financial economics , economics
Disodium dicarboxy methyl starch (DDMS), the malonate derivative of starch with varying degrees of substitution (DS=0.22, 1.1 and 1.8), have been prepared and examined for their calcium‐sequestrating ability. These derivatives form relatively stronger chelates with calcium (log K Ca =4.7) than sodium citrate (log K Ca =3.8). A degree of substitution (DS) ca. 1 appears to be most effective from structural consideration. On a weight basis, the chelating value of DDMS with DS ca. 1 was determined to be ca. 1/3 of that of STPP and EDTA and comparable with that of sodium citrate.