Characterisation of the monomeric composition of in situ wheat straw lignins by alkaline nitrobenzene oxidation: Effect of temperature and reaction time

Billa, E; Tollier, M-T; Monties, B

dc.contributor.author	Billa, E	en
dc.contributor.author	Tollier, M-T	en
dc.contributor.author	Monties, B	en
dc.date.accessioned	2014-03-01T01:44:39Z
dc.date.available	2014-03-01T01:44:39Z
dc.date.issued	1996	en
dc.identifier.issn	00225142	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/24447
dc.subject	alkaline nitrobenzene oxidation	en
dc.subject	p-hydroxyphenyl monomeric composition	en
dc.subject	wheat straw lignins	en
dc.title	Characterisation of the monomeric composition of in situ wheat straw lignins by alkaline nitrobenzene oxidation: Effect of temperature and reaction time	en
heal.type	journalArticle	en
heal.identifier.primary	10.1002/(SICI)1097-0010(199610)72:2<250::AID-JSFA651>3.0.CO;2-D	en
heal.identifier.secondary	http://dx.doi.org/10.1002/(SICI)1097-0010(199610)72:2<250::AID-JSFA651>3.0.CO;2-D	en
heal.publicationDate	1996	en
heal.abstract	The effect of temperature and time on the recovery yield of the products of alkaline nitrobenzene oxidation of in situ lignins in wheat straw internodes and corresponding leaves were studied. The results showed that significant variations in the yields of aromatic aldehydes (p- hydroxybenzaldehyde, vanillin and syringaldehyde) as well as hydroxycinnamic acids (p-coumaric and ferulic acids) arise from changes in the temperature and the reaction time. The conditions for maximum yield depend on the aldehyde concerned. For example, the yield of p-hydroxybenzaldehyde increases with increasing temperature and reaction time. This phenomenon could be attributed to the low relative reactivity related to the specific electronic structure of the non-methoxylated units and/or to the existence of specific condensation reactions involving the p-hydroxyphenyl aromatic ring. Finally, the results indicate a much higher complexity of Gramineae lignins compared to those derived from hardwoods and softwoods.	en
heal.journalName	Journal of the Science of Food and Agriculture	en
dc.identifier.doi	10.1002/(SICI)1097-0010(199610)72:2<250::AID-JSFA651>3.0.CO;2-D	en
dc.identifier.volume	72	en
dc.identifier.issue	2	en
dc.identifier.spage	250	en
dc.identifier.epage	256	en