1. Cuticular wax profiles of leaves of some traditionally used African Bignoniaceae.
- Author
-
Gormann R, Schreiber L, and Kolodziej H
- Subjects
- Africa, Alcohols analysis, Alkanes analysis, Bignoniaceae chemistry, Fatty Acids analysis, Phytosterols analysis, Triterpenes analysis, Waxes chemistry, Plant Leaves chemistry, Waxes isolation & purification
- Abstract
Bignoniaceae, Newbouldia laevis, Markhamia acuminata, Spathodea campanulata and Kigelia africana were analysed by GC-MS. The principal constituents were represented by a homologous series of n-alkanes (C23-C33), n-alcohols (C18-C30) and related carboxylic acids (C16-C36). For N. laevis and M. acuminata, ursolic and oleanolic acid were the most abundant wax components (52 and 60%, respectively), followed by the C29, the C31 and the C33 n-alkanes. The predominant components of S. campanulata were n-alcohols (35%), with octacosanol and triacontanol as the most abundant ones, while K. africana is distinguished from these three members by the conspicuous absence of triterpenoic acids and the predominance of n-alkanes (70%) with hentriacontane and tritriacontane as the main representatives. Other notable constituents were sterols, albeit present in trace amounts. The wax profiles are discussed in terms of taxonomic characters.
- Published
- 2004
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