Correlations between Pulp Properties of Eucalyptus Clones and Leaf Volatiles Using Automated Solid-Phase Microextraction
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- 作者：Clá ; udia A. Zini ; Teotô ; nio F. de Assis ; Edward B. Ledford ; Jr. ; Claudio Dariva ; Jandyra Fachel ; Eva Christensen ; and Janusz Pawliszyn
- 刊名：Journal of Agricultural and Food Chemistry
- 出版年：2003
- 出版时间：December 31, 2003
- 年：2003
- 卷：51
- 期：27
- 页码：7848 - 7853
- 全文大小：92K
- 年卷期：v.51,no.27(December 31, 2003)
- ISSN：1520-5118
文摘
Analysis of biogenic volatile organic compounds (BVOC) of 14 Eucalyptus clones has been performedusing an automated headspace solid-phase microextraction (HS-SPME) coupled to gas chromatography (GC)/ion trap mass spectrometry (ITMS) method. Correlations between pulp properties ofEucalyptus clones and the BVOC of their leaf headspaces were studied. The compounds 
fchars/alpha.gif" BORDER=0>-terpineoland the sesquiterpene fchars/beta2.gif" BORDER=0 ALIGN="middle">-eudesmol were positively correlated with S5, a property related to thehemicelluose content in the pulp. Qualitative results obtained with automated HS-SPME were sufficientto group together the same species and related hybrids through cluster analysis and were confirmedthrough principal component analysis. A preliminary separation of the essential oils of Eucalyptusdunnii through comprehensive two-dimensional gas chromatography (GC × GC) showed ~580 peakscompared to ~60 in a typical GC/ITMS first-dimension chromatogram. The potential of HS-SPMEcoupled to GC × GC to improve the separation of Eucalyptus volatiles and other plant essential oilslooks extremely promising for new applications of unsupervised learning methods.Keywords: Automated solid-phase microextraction (SPME); Eucalyptus; biogenic volatile organiccompounds (BVOC)' principal component analysis (PCA); cluster analysis (CA); pulp properties
fchars/alpha.gif" BORDER=0>-terpineoland the sesquiterpene fchars/beta2.gif" BORDER=0 ALIGN="middle">-eudesmol were positively correlated with S5, a property related to thehemicelluose content in the pulp. Qualitative results obtained with automated HS-SPME were sufficientto group together the same species and related hybrids through cluster analysis and were confirmedthrough principal component analysis. A preliminary separation of the essential oils of Eucalyptusdunnii through comprehensive two-dimensional gas chromatography (GC × GC) showed ~580 peakscompared to ~60 in a typical GC/ITMS first-dimension chromatogram. The potential of HS-SPMEcoupled to GC × GC to improve the separation of Eucalyptus volatiles and other plant essential oilslooks extremely promising for new applications of unsupervised learning methods.Keywords: Automated solid-phase microextraction (SPME); Eucalyptus; biogenic volatile organiccompounds (BVOC)' principal component analysis (PCA); cluster analysis (CA); pulp properties