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KMID : 1200820070070020171
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Oriental Pharmacy and Experimental Medicine
2007 Volume.7 No. 2 p.171 ~ p.181
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Copper binding capacity and physicochemical properties of pectins with different degrees of esterification. Approach to standardization of pectin preparations
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Kovalev Valeri V.
Khotimchenko Maxim Y.
Khotimchenko Yuri S.
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Abstract
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Metal binding activity of the pectin samples with different physicochemical properties was studied. It was found that in vitro copper binding capacity of pectins is depending on the following factors: degree of esterification, content of non-methylated anhydrogalacturonic acid, and pH of solution. There was found that the maximum copper uptake capacity increases correspondingly to reduction of the degree of esterification of pectin, rise of the non-methylated anhydrogalacturnic acid content and the solution pH. It is proposed to use for standardization of pectin samples such parameters as the degree of esterification, content of anhydrogalacturonic acid, and intrinsic viscosity.
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KEYWORD
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Pectin, Heavy metals, Sorption, Polysaccharides, Standardization
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