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Titolo:
OXIDATIVE CROSS-LINKING OF CORN BRAN HEMICELLULOSE - FORMATION OF FERULIC ACID DEHYDRODIMERS
Autore:
NG A; GREENSHIELDS RN; WALDRON KW;
Indirizzi:
AFRC,INST FOOD RES,DEPT FOOD BIOPHYS,BBSRC,NORWICH RES PK NORWICH NR47UA NORFOLK ENGLAND AFRC,INST FOOD RES,DEPT FOOD BIOPHYS,BBSRC NORWICH NR4 7UA NORFOLK ENGLAND GB BIOTECHNOL LTD SWANSEA SA2 9JU W GLAM WALES
Titolo Testata:
Carbohydrate research
fascicolo: 4, volume: 303, anno: 1997,
pagine: 459 - 462
SICI:
0008-6215(1997)303:4<459:OCOCBH>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
CELL-WALLS; IDENTIFICATION;
Keywords:
GEL; ARABINOXYLAN; CROSS-LINKING; DIFERULIC ACID; CELL WALLS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
10
Recensione:
Indirizzi per estratti:
Citazione:
A. Ng et al., "OXIDATIVE CROSS-LINKING OF CORN BRAN HEMICELLULOSE - FORMATION OF FERULIC ACID DEHYDRODIMERS", Carbohydrate research, 303(4), 1997, pp. 459-462

Abstract

The aim of this study was to investigate the nature and extent of ferulate dehydrodimer cross-links formed during peroxide and peroxidase-catalysed gelation of an arabinoxylan ferulate polysaccharide from American Corn Bran (Zea mays L.). Alkali-soluble phenolics from the arabinoxylan (AXF) and its gel (AXFG), were identified and quantified by HPLC. AXF was rich in trans-ferulic acid and contained small quantities of 8-0-4'-diferulic acid nyl)-2-methoxyphenoxy)-4-hydroxy-3-methoxycinnamic acid; 8-0-4'-DiFA); 8,5'-diferulic acid benzofuran form enyl)-7-methoxy-2,3-dihydrobenzofuran-3-carboxylic acid; 8,5'-FiFA benzofuran form); and 5,5'-diferulic acid ((E,E)-4,4'-dihydroxy-5,5'dimethoxy-3'-bicinnamic acid; 5,5'-DiFA) in addition to vanillin and trans-coumaric acid. Gel formation resulted in a considerable increase in the levels of 8-0-4'-DiFA, 8,5'-DiFA benzofuran form and the appearance of significant quantities of 8,8'-diferulic acid open form ,4'-dihydroxy-3,3'-dimethoxy-beta,beta'-bicinnamic acid; 8,8'-DiFA); 8,5'-diferulic acid open form E)-4,4'dihydroxy-3,5'-dimethoxy-beta,3'-bicinnamic acid; 8,5'-DiFA) and 8,8'-diferulic acid aryltetralin form -6-methoxy-1,2-dihydronaphthalene-2,3-dicarboxylic acid; 8,8'-DiFA aryl form). The results confirm that peroxidase/peroxide-induced gelation results from oxidative cross-linking of ferulic acid moieties. (C) 1997 Elsevier Science Ltd.

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Documento generato il 20/09/20 alle ore 18:53:45