Spectrophotometric evidence for the formation of short-lived hypomanganate(V) and manganate(VI) transient species during the oxidation of K-carrageenan by alkaline permanganate |
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| Authors: | Ahmed Gamal A Fawzy Ahmed Hassan Refat M |
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| Affiliation: | Department of Chemistry, Faculty of Science, Assiut University, Assiut 71516, Egypt. |
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| Abstract: | Spectrophotometric detection of the formation of short-lived hypomanganate(V), [KCAR-Mn(V)O43-], and manganate(VI), [KCAR-Mn(VI)O42-], intermediates has been confirmed through the oxidation of K-carrageenan (KCAR) by potassium permanganate in alkaline solutions of pH's >or= 12 using a conventional spectrophotometer. The short-lived transient species were characterized and a mechanism consistent with experimental observations is suggested. |
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| Keywords: | Carbohydrates Carrageenans UV-vis spectra Hypomanganate(V) Manganate(VI) Oxidation |
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