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Titolo:
Effects of structural modifications on some physical characteristics of exopolysaccharides from Lactococcus lactis
Autore:
Tuinier, R; van Casteren, WHM; Looijesteijn, PJ; Schols, HA; Voragen, AGJ; Zoon, P;
Indirizzi:
NIZO Food Res, NL-6710 BA Ede, Netherlands NIZO Food Res Ede NetherlandsNL-6710 BA es, NL-6710 BA Ede, Netherlands Univ Wageningen & Res Ctr, Dept Agrotechnol & Food Sci, Food Chem Lab, NL-6700 EV Wageningen, Netherlands Univ Wageningen & Res Ctr Wageningen Netherlands NL-6700 EV Netherlands Univ Utrecht, Debye Res Inst, Vant Hoff Lab, NL-3584 CH Utrecht, Netherlands Univ Utrecht Utrecht Netherlands NL-3584 CH 3584 CH Utrecht, Netherlands
Titolo Testata:
BIOPOLYMERS
fascicolo: 3, volume: 59, anno: 2001,
pagine: 160 - 166
SICI:
0006-3525(200109)59:3<160:EOSMOS>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
MONTE-CARLO CALCULATIONS; SUBSP CREMORIS B39; INTRAMOLECULAR INTERACTIONS; EXOCELLULAR POLYSACCHARIDE; HYDRODYNAMIC PROPERTIES; ENZYMATIC MODIFICATION; MOLECULAR-WEIGHT; STAR POLYMERS; SHEAR-RATE; VISCOSITY;
Keywords:
exopolysaccharide; Lactococcus lactis; chemical structure; modification; size-exclusion chromatography; light scattering; Kuhn length;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
31
Recensione:
Indirizzi per estratti:
Indirizzo: Tuinier, R NIZO Food Res, POB 20, NL-6710 BA Ede, Netherlands NIZO Food Res POB 20 Ede Netherlands NL-6710 BA e, Netherlands
Citazione:
R. Tuinier et al., "Effects of structural modifications on some physical characteristics of exopolysaccharides from Lactococcus lactis", BIOPOLYMERS, 59(3), 2001, pp. 160-166

Abstract

The relationship between the primary structure and the chain stiffness of exopolysaccharides (EPSs) and modified EPSs produced by two strains of Lactococcus lactis subsp. cremoris was investigated. The molar mass an radius of gyration of these exopolysaccharides were analyzed by multiangle static light scattering after size-exclusion chromatography. From these results andthe chemical structure of the repeating units of the investigated EPSs, the Kuhn lengths could be calculated. We found that the initial Kuhn lengths of the two native EPSs are similar. Modification of the EPSs by removing parts of the side groups resulted in a decrease in both the absolute value and the normalized value of the Kuhn length. It is therefore concluded that partial removal of the side groups of these polysaccharides could make them less efficient as thickeners if no specific interaction with other components occurs. (C) 2001 John Wiley & Sons, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/11/20 alle ore 00:49:36