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Cerium Binding Activity of Pectins Isolated from the Seagrasses Zostera marina and Phyllospadix iwatensis
School of Biomedicine, Far Eastern Federal University, 8, Sukhanova str., Vladivostok, 690091, Russia
A.V. Zhirmunski Institute of Marine Biology, Far Eastern Branch of Russian Academy of Sciences, 17, Palchevskgo str., Vladivostok, 690059, Russia
Vostokpharm Co., LTD., 17, Palchevskgo str., Vladivostok, 690059, Russia
* Author to whom correspondence should be addressed.
Received: 4 January 2012; in revised form: 22 March 2012 / Accepted: 22 March 2012 / Published: 5 April 2012
Abstract: Cerium binding activity of three different water soluble pectin compounds of different origin was studied in a batch sorption system. The Langmuir, Freundlich and BET sorption models were adopted to describe the binding reactions between metal ions and pectin molecules. The Langmuir model provided the best fit. Within the pH range from 4.0 to 6.0, the largest amount of the cerium ions was bound by pectin isolated from the seagrass Phylospadix iwatensis in comparison to pectin extracted from the seagrass Zostera marina and pectin obtained from citrus peel (commercial grade). The Langmuir constants were also highest for the pectin samples isolated from the seagrass P. iwatensis. The results obtained from this study suggest that pectin is a prospective source for the development of radioisotope-removing pharmaceuticals.
Keywords: cerium; equilibrium study; pectin; degree of esterification; removal
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Khotimchenko, Y.; Khozhaenko, E.; Kovalev, V.; Khotimchenko, M. Cerium Binding Activity of Pectins Isolated from the Seagrasses Zostera marina and Phyllospadix iwatensis. Mar. Drugs 2012, 10, 834-848.
Khotimchenko Y, Khozhaenko E, Kovalev V, Khotimchenko M. Cerium Binding Activity of Pectins Isolated from the Seagrasses Zostera marina and Phyllospadix iwatensis. Marine Drugs. 2012; 10(4):834-848.
Khotimchenko, Yuri; Khozhaenko, Elena; Kovalev, Valeri; Khotimchenko, Maxim. 2012. "Cerium Binding Activity of Pectins Isolated from the Seagrasses Zostera marina and Phyllospadix iwatensis." Mar. Drugs 10, no. 4: 834-848.