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Title

Chemical characterization of lignin and lipophilic fractions from leaf fibers of curaua (Ananas erectifolius)

AuthorsMarques, Gisela CSIC ORCID; Gutiérrez Suárez, Ana CSIC ORCID ; Río Andrade, José Carlos del CSIC ORCID
KeywordsCuraua
Ananas erectifolius
lipids
lignin
pyrolysis
hydroxy monoesters
glyceryl esters
paper pulp
Issue Date2007
PublisherAmerican Chemical Society
CitationJournal of Agricultural and Food Chemistry 55: 1327-1336 (2007)
AbstractThe chemical composition of leaf fibers of curaua (Ananas erectifolius), an herbaceous plant native of Amazonia, was studied. Special attention was paid to the content and composition of lignin and lipophilic compounds. The analysis of lignin in the curaua fibers was performed “in situ” by pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) and showed a lignin composition with a p-hydroxyphenyl:guaiacyl:syringyl units (H:G:S) molar proportion of 30:29:41 (S/G molar ratio of 1.4). The presence of p-hydroxycinnamic acids (p-coumaric and ferulic acids) in curaua fibers was revealed upon pyrolysis in the presence of tetramethylammonium hydroxide. On the other hand, the main lipophilic compounds, analysed by GC/MS, were series of long-chain n-fatty acids, n-fatty alcohols, α- and ω-hydroxyacids, monoglycerides, sterols and waxes. Other compounds, such as ω-hydroxy monoesters and ω-hydroxy acylesters of glycerol were also found in this fiber in high amounts.
DescriptionE-mail: delrio@irnase.csic.es (J.C. del Río)
URIhttp://hdl.handle.net/10261/34682
DOI10.1021/jf062677x
Appears in Collections:(IRNAS) Artículos
(CIB) Artículos

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