Iodine binding capacity and iodine binding energy of glycogen

Douglas N. Lecker, Sangeeta Kumari, Arshad Khan

Research output: Contribution to journalArticle

22 Scopus citations

Abstract

The iodine binding capacity (IBC) of glycogen is around 0.30% (w/w) at 3°C. The amount of iodine complexed comprises about 12.5% of the mass of glycogen that takes part in the glycogen-iodine (GI) complex formation. This suggests involvement of four iodine atoms for every 25 anhydroglucose units (AGU, C6H10O5). Since the chromophore is due to the I4 unit within the helix of 11 AGUs, only 44% of the AGUs (11 out of 25) are involved in the complex formation. The heat of formation of the GI complex is around -40 kJ/mol of I2 bonded. These results suggest remarkable similarities with those of the amylopectin-iodine (API) complex.

Original languageEnglish (US)
Pages (from-to)1409-1412
Number of pages4
JournalJournal of Polymer Science, Part A: Polymer Chemistry
Volume35
Issue number8
DOIs
StatePublished - Jun 1997

All Science Journal Classification (ASJC) codes

  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry

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