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Titolo:
Diferulates as structural components in soluble and insoluble cereal dietary fibre
Autore:
Bunzel, M; Ralph, J; Marita, JM; Hatfield, RD; Steinhart, H;
Indirizzi:
Univ Hamburg, Dept Food Chem, Inst Biochem & Food Chem, D-20146 Hamburg, Germany Univ Hamburg Hamburg Germany D-20146 Food Chem, D-20146 Hamburg, Germany USDA ARS, US Dairy Forage Res Ctr, Madison, WI 53706 USA USDA ARS MadisonWI USA 53706 Dairy Forage Res Ctr, Madison, WI 53706 USA Univ Wisconsin, Dept Forestry, Madison, WI 53706 USA Univ Wisconsin Madison WI USA 53706 Dept Forestry, Madison, WI 53706 USA
Titolo Testata:
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
fascicolo: 7, volume: 81, anno: 2001,
pagine: 653 - 660
SICI:
0022-5142(20010515)81:7<653:DASCIS>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
FERULIC ACID DEHYDRODIMERS; OXIDATIVE CROSS-LINKING; CELL-WALLS; ANTIOXIDANT PROPERTIES; BAMBOO SHOOT; FIBER; ARABINOXYLANS; LIGNIN; BRAN; OLIGOSACCHARIDES;
Keywords:
ferulic acid; ferulate; diferulic acids; diferulates; dietary fibre; cereals; arabinoxylans; cell wall cross-linking;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
40
Recensione:
Indirizzi per estratti:
Indirizzo: Steinhart, H Univ Hamburg, Dept Food Chem, Inst Biochem & Food Chem, Grindelallee 117, D-20146 Hamburg, Germany Univ Hamburg Grindelallee 117 Hamburg Germany D-20146 ermany
Citazione:
M. Bunzel et al., "Diferulates as structural components in soluble and insoluble cereal dietary fibre", J SCI FOOD, 81(7), 2001, pp. 653-660

Abstract

C;ell wall cross-linking can have a substantial effect on the properties of the wall. To estimate cross-linking between arabinoxylans) in cereal fibres, dehydrodiferulate levels were measured in soluble and insoluble dietaryfibre (SDF and IDF) isolated from whole grains of maize (Zea mays L), wheat (Triticum. aestivum L), spelt (Triticum spelta L), rice (Oryza sativa L),wild rice (Zizania aquatica Lj, barley (Hordeum vulgare L), rye (Secale cereale Lj, oat (Avena ena sativa L) and millet (Panicum miliaceum L). After saponification of the cereal fibres the extracts were investigated for dehydrodimers of ferulic acid using GLC-MS and GLC-FID. From most cereal IDF the whole spectrum of dehydrodiferulic acids (DFAs) (8-5 '-, 8-8 '-, 5-5 '-, 8-O-4 '- and 4-O-5 ' -coupled) could be identified. The absolute contents of total DFAs ranged between 2.4 and 12.6 mg g(-1). With the exception of 4-O-5 ' -coupled DFA, the whole range of DFAs was also detected from cereal SDF but only in amounts 40-230 mug g(-1). It was estimated that arabinoxylans of cereal IDF contain 8-39 times more diferulates than arabinoxylans of cereal SDF (where measurement of DFA levels in SDF was possible). In cereal IDF, 8-5 ' -coupled dimers dominated. whereas in cereal SDF, 8-8 ' -coupleddimers were relatively enhanced and often became the major dimers. (C) 2001 Society of Chemical Industry.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 03/12/20 alle ore 12:43:54