Iodine binding capacity and iodine binding energy of glycogen

Douglas N. Lecker; Sangeeta Kumari; Arshad Khan

doi:10.1002/(SICI)1099-0518(199706)35:8<1409::AID-POLA9>3.0.CO;2-U

Iodine binding capacity and iodine binding energy of glycogen

Douglas N. Lecker, Sangeeta Kumari, Arshad Khan

Research output: Contribution to journal › Article › peer-review

26 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 language	English (US)
Pages (from-to)	1409-1412
Number of pages	4
Journal	Journal of Polymer Science, Part A: Polymer Chemistry
Volume	35
Issue number	8
DOIs	https://doi.org/10.1002/(SICI)1099-0518(199706)35:8<1409::AID-POLA9>3.0.CO;2-U
State	Published - Jun 1997

All Science Journal Classification (ASJC) codes

Polymers and Plastics
Organic Chemistry
Materials Chemistry

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10.1002/(SICI)1099-0518(199706)35:8<1409::AID-POLA9>3.0.CO;2-U

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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.",

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AU - Kumari, Sangeeta

AU - Khan, Arshad

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N2 - 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.

AB - 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.

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Iodine binding capacity and iodine binding energy of glycogen

Abstract

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