期刊
JOURNAL OF CHEMICAL ECOLOGY
卷 32, 期 12, 页码 2679-2685出版社
SPRINGER
DOI: 10.1007/s10886-006-9191-z
关键词
abietic; neoabietic; palustric; levopimaric; dehydroabietic; white spruce; diterpenes; HPLC
Diterpene resin acids are major constituents of conifer oleoresin and play important roles in tree defense against insects and microbial pathogens. The tricyclic C-20 carboxylic acids are generally classified into two groups, the abietanes and the pimaranes. The abietanes have conjugated double bonds and exhibit characteristic UV spectra. Here, we report the analysis of abietanes by reversed-phase high-performance liquid chromatography using multiwavelength detection to optimize quantification of underivatized abietic, neoabietic, palustric, levopimaric, and dehydroabietic acids. The utility of the method is demonstrated with methanol extracts of white spruce (Picea glauca) phloem, and representative concentrations are reported.
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