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Titolo:
DETERMINATION OF LIGNIN IN THE PRESENCE OF ESTER-BOUND SUBSTITUTED CINNAMIC-ACIDS BY A MODIFIED ACETYL BROMIDE PROCEDURE
Autore:
MORRISON IM; STEWART D;
Indirizzi:
SCOTTISH CROP RES INST DUNDEE DD2 5DA SCOTLAND
Titolo Testata:
Journal of the Science of Food and Agriculture
fascicolo: 2, volume: 69, anno: 1995,
pagine: 151 - 157
SICI:
0022-5142(1995)69:2<151:DOLITP>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Soggetto:
CELL-WALLS; PHENOLIC COMPONENTS; DIGESTIBILITY; LINKAGE; STRAW;
Keywords:
LIGNIN; SUBSTITUTED CINNAMIC ACIDS; PERENNIAL RYEGRASS STEMS; LOLIUM PERENNE; OAT STRAW; AVENA SATIVA; FORAGE RAPE STEM; BRASSICA NAPUS; ACETYL BROMIDE; DRIFT SPECTROSCOPY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
26
Recensione:
Indirizzi per estratti:
Citazione:
I.M. Morrison e D. Stewart, "DETERMINATION OF LIGNIN IN THE PRESENCE OF ESTER-BOUND SUBSTITUTED CINNAMIC-ACIDS BY A MODIFIED ACETYL BROMIDE PROCEDURE", Journal of the Science of Food and Agriculture, 69(2), 1995, pp. 151-157

Abstract

The lignin content of plant materials can be determined spectroscopically but the presence of ester-bound substituted cinnamic acids in thecell walls of some plant families, particularly the Gramineae, gives elevated values. Pre-treatment with either pyrrolidine : pyridine or 0.5 M sodium methoxide selectively removes the ester-bound acids leaving intact the true lignin. The treatments have been applied to cellulose powder, immature perennial ryegrass stems, oat straw and forage rapestems. The pyrrolidine: pyridine treatment removes a slightly higher proportion of these non-lignin components but the sodium methoxide treatment appears to cause less damage than the heterocyclic bases to other cell wall constituents and is preferred if the residues are to be used for other purposes.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/09/20 alle ore 06:03:59