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Titolo:
CHEMOTAXONOMIC DIFFERENTIATION OF CONIFER FAMILIES AND GENERA BASED ON THE SEED OIL FATTY-ACID COMPOSITIONS - MULTIVARIATE ANALYSES
Autore:
WOLFF RL; DELUC LG; MARPEAU AM; COMPS B;
Indirizzi:
UNIV BORDEAUX 1,ISTAB,LAB LIPOCHIM ALIMENTAIRE,AVE FAC F-33405 TALENCE FRANCE UNIV BORDEAUX 1,PHYSIOL CELLULAIRE VEGETALE LAB F-33405 TALENCE FRANCE UNIV BORDEAUX 1,LAB ECOL GENET F-33405 TALENCE FRANCE
Titolo Testata:
Trees
fascicolo: 2, volume: 12, anno: 1997,
pagine: 57 - 65
SICI:
0931-1890(1997)12:2<57:CDOCFA>2.0.ZU;2-W
Fonte:
ISI
Lingua:
ENG
Soggetto:
CHROMATOGRAPHY MASS-SPECTROMETRY; BIOTA-ORIENTALIS; TRIACYLGLYCEROLS; DELTA-5; LIPIDS; PINE; SPECTROSCOPY; DERIVATIVES;
Keywords:
CONIFER SEED OIL; FATTY ACID COMPOSITION; DELTA-5-OLEFINIC ACIDS; PINACEAE; CHEMOTAXONOMY;
Tipo documento:
Article
Natura:
Periodico
Citazioni:
26
Recensione:
Indirizzi per estratti:
Citazione:
R.L. Wolff et al., "CHEMOTAXONOMIC DIFFERENTIATION OF CONIFER FAMILIES AND GENERA BASED ON THE SEED OIL FATTY-ACID COMPOSITIONS - MULTIVARIATE ANALYSES", Trees, 12(2), 1997, pp. 57-65

Abstract

The fatty acid compositions of seed oils from 34 conifer species, mainly Pinaceae and secondarily Cupressaceae, have been determined by gas-liquid chromatography of the methyl esters. As noted in earlier studies, these oils were characterized by the presence of several Delta 5-olefinic acids, i.e., 5,9-18:2, 5,9,12-18:3, 5,9,12,15-18:4, 5,11-20:2,5,11,14-20:3, and 5,11,14,17-20:4 acids, in addition to the more common saturated, oleic, linoleic and alpha-linolenic acids. Based on these fatty acid compositions, and on those established in earlier systematic studies (totalling 82 species), we established a chemotaxonomic grouping of the main conifer families, i.e., of the Pinaceae, Taxodiaceae, Cupressaceae, and Taxaceae. This was achieved using multivariate analyses (principal component analysis and discriminant analysis). The fatty acids that discriminate best in this classification are the 5,11,14,17-20:4, 9,12,15-18:3 and 5,9,12-18:3 acids. Moreover, it was possible to differentiate between several genera of the Pinaceae: Pinus (including Tsuga and Pseudotsuga), Abies, Cedrus, and Picea plus Larix, represented quite distinct groups. Other fatty acids such as oleic, linoleic, and 5,9-18:2 acids were also important for this purpose. The fatty acid compositions, and particularly the Delta 5-olefinic acid contents of conifer seed oils, may thus be applied to the chemosystematic distinction among conifer families as well as genera of the Pinaceae.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/11/20 alle ore 10:20:21