The effect of sugars on the diffusion of water in starch gels: a pulsed field gradient NMR study

被引：28

作者：

Farhat, IA ^{[1
]}

Loisel, E ^{[1
]}

Saez, P ^{[1
]}

Derbyshire, W ^{[1
]}

Blanshard, JMV ^{[1
]}

机构：

[1] Univ Nottingham, Dept Appl Biochem & Food Sci, Loughborough LE12 5RD, Leics, England

来源：

INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY | 1997年 / 32卷 / 05期

关键词：

diffusion; NMR; starch; sugar;

D O I：

10.1046/j.1365-2621.1997.00126.x

中图分类号：

TS2 [食品工业];

学科分类号：

0832 ;

摘要：

The self-diffusion coefficient of water was measured in starch-sugar-water systems of various compositions. The starch was either waxy maize or potato starch and the sugar was either sucrose or xylose. The diffusion results obtained from sugar solutions (i.e. with a zero polymer concentration) suggested that a free water behaviour should only be expected after a bilayer coverage of the sugar molecule. The presence of sugars was found to decrease considerably the translational mobility of water in starch gels. This reduction was proportional to the sugar concentration in the system but showed little dependence on the type of sugar. An attempt was made to relate the self-diffusion coefficients of water in starch-sugar-water gels to those obtained for the individual binary systems (starch-water and sugar-water). A prediction based on the additive effects of sugar and starch only corresponded with experimental results in dilute systems.

引用

页码：377 / 387

页数：11

共 12 条

[1] THE EFFECTS OF DIFFUSIVE EXCHANGE IN HETEROGENEOUS SYSTEMS ON NMR LINE-SHAPES AND RELAXATION PROCESSES [J].

BELTON, PS ;

HILLS, BP .

MOLECULAR PHYSICS, 1987, 61 (04) :999-1018

[2]

BROSIO E, 1994, CELLULAR MOL BIOL, V403, P567

[3] DIFFUSION OF FAT AND WATER IN CHEESE AS STUDIED BY PULSED FIELD GRADIENT NUCLEAR MAGNETIC-RESONANCE [J].

CALLAGHAN, PT ;

JOLLEY, KW ;

HUMPHREY, RS .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1983, 93 (02) :521-529

[4]

FARHAT IA, 1996, THESIS NOTTINGHAM U, P165

[5] CONFORMATION OF POLYOLS IN WATER - MOLECULAR-DYNAMICS SIMULATION OF MANNITOL AND SORBITOL [J].

GRIGERA, JR .

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS I, 1988, 84 :2603-2608

[6] SELF-DIFFUSION OF SMALL MOLECULES IN COLLOIDAL SYSTEMS [J].

JONSSON, B ;

WENNERSTROM, H ;

NILSSON, PG ;

LINSE, P .

COLLOID AND POLYMER SCIENCE, 1986, 264 (01) :77-88

[7]

KAREL M, 1991, ADV EXP MED BIOL, P157

[8] GEOMETRICAL RESTRICTIONS OF WATER DIFFUSION IN AQUEOUS PROTEIN SYSTEMS - A STUDY USING NMR FIELD-GRADIENT TECHNIQUES [J].

KIMMICH, R ;

KLAMMLER, F ;

SKIRDA, VD ;

SEREBRENNIKOVA, IA ;

MAKLAKOV, AI ;

FATKULLIN, N .

APPLIED MAGNETIC RESONANCE, 1993, 4 (04) :425-440

[9] SELF-DIFFUSION IN NORMAL AND HEAVY-WATER IN RANGE 1-45 DEGREES [J].

MILLS, R .

JOURNAL OF PHYSICAL CHEMISTRY, 1973, 77 (05) :685-688

[10] GEL STRUCTURE AND WATER DIFFUSION PHENOMENA IN STARCH GELS STUDIED BY PULSED-FIELD GRADIENT STIMULATED ECHO NMR [J].

OHTSUKA, A ;

WATANABE, T ;

SUZUKI, T .

CARBOHYDRATE POLYMERS, 1994, 25 (02) :95-100

← 1 2 →