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

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

doi:10.1002/star.19870390904

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

S. J. Richardson, I. C. Baianu, M. P. Steinberg

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Abstract

The molecular mobility of water in a starch‐sucrose system was determined by deuterium (²H) and oxygen‐17 (¹⁷O) 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 (R₂) and peak behavior were analyzed in terms of solids concentration and water activity. R₂ of the FSS system is compared to the R₂ of starch and sucrose systems alone. The relaxation behavior of the ²H and ¹⁷O 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 ¹⁷O NMR.

Original language	English (US)
Pages (from-to)	302-308
Number of pages	7
Journal	Starch ‐ Stärke
Volume	39
Issue number	9
DOIs	https://doi.org/10.1002/star.19870390904
State	Published - 1987

ASJC Scopus subject areas

Food Science
Organic Chemistry

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10.1002/star.19870390904

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title = "Mobility of Water in Starch‐Sucrose Systems Determined by Deuterium and Oxygen‐17 NMR",

abstract = "The molecular mobility of water in a starch‐sucrose system was determined by deuterium (2H) and oxygen‐17 (17O) 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 (R2) and peak behavior were analyzed in terms of solids concentration and water activity. R2 of the FSS system is compared to the R2 of starch and sucrose systems alone. The relaxation behavior of the 2H and 17O 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 17O NMR.",

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AU - Richardson, S. J.

AU - Baianu, I. C.

AU - Steinberg, M. P.

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Y1 - 1987

N2 - The molecular mobility of water in a starch‐sucrose system was determined by deuterium (2H) and oxygen‐17 (17O) 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 (R2) and peak behavior were analyzed in terms of solids concentration and water activity. R2 of the FSS system is compared to the R2 of starch and sucrose systems alone. The relaxation behavior of the 2H and 17O 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 17O NMR.

AB - The molecular mobility of water in a starch‐sucrose system was determined by deuterium (2H) and oxygen‐17 (17O) 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 (R2) and peak behavior were analyzed in terms of solids concentration and water activity. R2 of the FSS system is compared to the R2 of starch and sucrose systems alone. The relaxation behavior of the 2H and 17O 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 17O NMR.

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

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