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Titolo:
Rheological properties of water-soluble soybean polysaccharides extracted under weak acidic condition
Autore:
Furuta, H; Maeda, H;
Indirizzi:
Fuji497, Co Ltd, Novelty Mat Res Inst Tsukuba R&D Ctr, Yawara, Ibaraki 3002 Fuji Oil Co Ltd Yawara Ibaraki Japan 3002497 &D Ctr, Yawara, Ibaraki 3002 Fuji Oil Co Ltd, Hannan R&D Ctr, Prot Dev Dept 2, Osaka 5980061, Japan Fuji Oil Co Ltd Osaka Japan 5980061 rot Dev Dept 2, Osaka 5980061, Japan
Titolo Testata:
FOOD HYDROCOLLOIDS
fascicolo: 3, volume: 13, anno: 1999,
pagine: 267 - 274
SICI:
0268-005X(199905)13:3<267:RPOWSP>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
LIPIDS;
Keywords:
soybean; water-soluble polysaccharides; polysaccharide; rheology;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
20
Recensione:
Indirizzi per estratti:
Indirizzo: Furuta, H Fujia,il Co Ltd, Novelty Mat Res Inst Tsukuba R&D Ctr, 4-3 Kinunodai, Yawar Fuji Oil Co Ltd 4-3 Kinunodai Yawara Ibaraki Japan 3002497 Yawar
Citazione:
H. Furuta e H. Maeda, "Rheological properties of water-soluble soybean polysaccharides extracted under weak acidic condition", FOOD HYDROC, 13(3), 1999, pp. 267-274

Abstract

We studied the rheological properties of water-soluble soybean polysaccharides (SSPS) directly extracted from the residual by-product of isolated soybean protein for 1.5 h at pH 5.0 and 120 degrees C. The purity was relatively high, and they were composed mostly of saccharides. The molecular weightof the SSPS, as determined by a viscometric method, was approximately 114 000. The SSPS solution was lower in viscosity than that reported by Thompson et al., (Thompson, D.B., Huang, C., & Sieglaff, C. (1987). Rheological behavior of soluble polysaccharides fractions from soybean. Food Hydrocolloids, 1, 333-337) who investigated the polysaccharides extracted by the methodof Morita (Morita, M. (1965). Polysaccharides of soybean seeds: polysaccharide constituents of "hot-water-extract'' fraction of soybean seed and an arabinogalactan as its major component. Agric. Biol. Chem., 29, 564-573), and the viscosity was higher than polysaccharides extracted by the method of Aspinall et al. (Aspinall, G.O., Begbie, R., Hamilton, A., & Whyte, J.N.C. (1967). Polysaccharides of soybeans: extraction and fractionation of polysaccharides from cotyledon meal. J. Chem. Sec. (C), 1065-1070) The SSPS couldbe dissolved in water at 30% concentration at 20 degrees C. A 10% solutionof SSPS showed Newtonian behavior. This solution did not undergo gelation in the range of 580 degrees C. Although this SSPS contained approximately 20% uronic acid, it did not show reactivity with polyvalent cations. The viscosity of the SSPS solution increased slightly with increasing pH, and thisincrease was reversible. We conclude that SSPS have strong glucosidic bonds that enable them to endure the sterilization at 120 degrees C for 15 min at pH 3-6. Further, the behavior of the viscosities of dilute solutions suggests that galacturonic acids, such as uronic acid, exist closely together in the SSPS structure. (C) 1999 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/12/20 alle ore 13:04:29