Mobility of Water in Starch‐Sucrose Systems Determined by Deuterium and Oxygen‐17 NMR | Zendy

Richardson S. J. | Zendy; Baianu I. C. | Zendy; Steinberg M. P. | Zendy

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Mobility of Water in Starch‐Sucrose Systems Determined by Deuterium and Oxygen‐17 NMR

Author(s) -

Richardson S. J.,

Baianu I. C.,

Steinberg M. P.

Publication year - 1987

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.19870390904

Subject(s) - starch , sucrose , chemistry , deuterium , oxygen , nuclear magnetic resonance spectroscopy , oxygen 17 , relaxation (psychology) , aqueous solution , analytical chemistry (journal) , nuclear chemistry , chromatography , nuclear magnetic resonance , organic chemistry , physics , psychology , social psychology , quantum mechanics

The molecular mobility of water in a starch‐sucrose system was determined by deuterium ( 2 H) and oxygen‐17 ( 17 O) high‐field Nuclear Magnetic Resonance (NMR) spectroscopy. The starch‐sucrose system was composed of freeze‐dried starch:sucrose (FSS) (90:10) in deuterium oxide or enriched oxygen‐17 water over the solids concentration range of 10 to 93% solids. The NMR transverse relaxation rate (R 2 ) and peak behavior were analyzed in terms of solids concentration and water activity. R 2 of the FSS system is compared to the R 2 of starch and sucrose systems alone. The relaxation behavior of the 2 H and 17 O were compared for FSS, starch and sucrose. The results led to the conclusion that the best NMR methodology for the investigation of water mobility is provided by 17 O NMR.

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