Non thermal plasma in liquid media: Effect on inulin depolymerization and functionalization.

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ID: 89917
2020
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Abstract
We report the complete conversion of inulin in gas/liquid media by a dielectric barrier discharge plasma at atmospheric pressure. Depending on the plasma treatment time (from 1 to 30 min) and the chemical nature of the gases (air, oxygen, nitrogen), it was possible to depolymerize inulin into fructo-oligosaccharides with a degree of polymerization under 5 or to achieve a total conversion of inulin into its two monomeric constituents, fructose and glucose in 20 min, without any degradation products. Combined results from liquid chromatography (HPLC), solid state Nuclear Magnetic Resonance (ssNMR) and mass spectroscopy revealed that the breakage of the β 1-4-bridged oxygen occurs by an acidic attack, following the oxidation of the polymer. Infrared spectroscopy revealed the oxidation and breakage of the polymer and also adsorption of nitrate species. Non thermal plasma treatment appears as a promising technology for the efficient production of mono and oligosaccharides from various sources for the added value molecules in food and pharmaceutical application domains.
Reference Key
nastase2020noncarbohydrate Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Nastase, Raluca;Fourré, Elodie;Fanuel, Mathieu;Falourd, Xavier;Capron, Isabelle;
Journal Carbohydrate polymers
Year 2020
DOI
S0144-8617(19)31372-4
URL
Keywords
infrared spectroscopy inulin depolymerization gas-liquid plasma reactor non thermal plasma ssnmr spectroscopy

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