Kernresonanzuntersuchungen an Wasser in Stärkegelen bei 295 K | Zendy

Basler W. | Zendy; Lechert H. | Zendy

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Kernresonanzuntersuchungen an Wasser in Stärkegelen bei 295 K

Author(s) -

Basler W.,

Lechert H.

Publication year - 1973

Publication title -

starch ‐ stärke

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.62

H-Index - 82

eISSN - 1521-379X

pISSN - 0038-9056

DOI - 10.1002/star.19730250902

Subject(s) - bound water , free water , starch , relaxation (psychology) , saturation (graph theory) , analytical chemistry (journal) , chemistry , line (geometry) , phase (matter) , materials science , proton nmr , water saturation , nuclear magnetic resonance , chromatography , molecule , stereochemistry , physics , organic chemistry , environmental science , combinatorics , environmental engineering , psychology , social psychology , mathematics , porosity , geometry

Wide‐Line NMR of Water in Starch Gels at 295 K The purpose of this work was to decide if it is possible to detect bound and free water in starch gels for T > 0°C by wide‐line NMR at various RF‐levels. Therefore, we measured the longitudinal (T 1 ) and transverse (T 2 ) relaxation of the water protons in maize starch gels of different water concentrations at 295 K by pulsed and wide‐line NMR. The absorbed water showed single‐phase behaviour at all water concentrations. A separation into bound and free water was not seen. The determination of bound water by wide‐line NMR is shown to be a pure effect of RF‐saturation which can be calculated by the T 1 and T 2 values we measured.

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