Fe(III)-polyuronic acid photochemistry: radical chemistry in natural polysaccharide
Fe(III)-polyuronic acid photochemistry: radical chemistry in natural polysaccharide
复制标题
Fe(III)-聚糖醛酸光化学:天然多糖中的自由基化学
DOI:
10.1007/s43630-021-00014-0
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发表时间:
2021
影响因子:
3.1
通讯作者:
Ostrowski, Alexis D.
中科院分区:
文献类型:
--
作者:
Karunarathna, M. H.;Ayodele, Mayokun J.;Giammanco, Giuseppe E.;Brugh, Alexander M.;Muizzi, Dayana A.;Bauman, Mariia A.;Torelli, Andrew T.;Alabanza, Anginelle M.;Forbes, Malcolm D.;Ostrowski, Alexis D.
The photochemistry of Fe(III) coordinated to natural uronate-containing polysaccharides has been investigated quantitatively in aqueous solution. It is demonstrated that the photoreduction of the coordinated Fe(III) to Fe(II) and oxidative decarboxylation occurs in a variety of uronate-containing polysaccharides. The photochemistry of the Fe(III)-polyuronic acid system generated a radical species during the reaction which was studied using the spin trapping technique. The identity of the radical species from this reaction was confirmed as CO2•−indicating that both bond cleavage of the carboxylate and oxidative decarboxylation after ligand to metal charge transfer radical reactions may be taking place upon irradiation. Degradation of the polyuronic acid chain was investigated with dynamic light scattering, showing a decrease in the hydrodynamic radius of the polymer assemblies in solution after light irradiation that correlates with the Fe(II) generation. A decrease in viscosity of Fe(IIII)-alginate after light irradiation was also observed. Additionally, the photochemical reaction was investigated in plant root tissue (parsnip) demonstrating that Fe(III) coordination in these natural materials leads to photoreactivity that degrades the pectin component. These results highlight that this Fe(III)-polyuronic acid can occur in many natural systems and may play a role in biogeochemical cycling of iron and ferrous iron generation in plants with significant polyuronic acid content.Graphic abstract
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DOI:
--
发表时间:
1960
期刊:
The Journal of Biophysical and Biochemical Cytology
影响因子:
--
作者:
P. Albersheim;K. Mühlethaler;A. Frey
通讯作者:
A. Frey
DOI:
10.1016/0021-9797(84)90206-6
发表时间:
1984-11
期刊:
--
影响因子:
--
作者:
T. Waite;F. Morel
通讯作者:
T. Waite;F. Morel
影响因子:
2.9
作者:
Villamena, Frederick A.;Locigno, Edward J.;Zweier, Jay L.
通讯作者:
Zweier, Jay L.
DOI:
--
发表时间:
2003
期刊:
影响因子:
--
作者:
S. Deiana;A. Premoli;C. Senette;C. Gessa;C. Marzadori
通讯作者:
C. Marzadori
影响因子:
3.8
作者:
Bui, Anh Kim T.;Bacic, Antony;Pettolino, Filomena
通讯作者:
Pettolino, Filomena