Abstract
Chemical composition of the floral nectar of Peganum harmala, a herbaceous medicinal perennial of the family Zygophyllaceae, was analysed using high-performance liquid chromatography technique. The nectar sugar detection experiments resulted in 33.1, 39.8 and 27.4%, respectively, for fructose, glucose and sucrose, upon which the nectar was classified as hexose rich. In addition, 11 proteinaceous amino acids were recognised and quantified in the nectar. Concentration of the insects’ favoured amino acid, prolin, was markedly high. Furthermore, among four detected alkaloids, harmalol and harmine as the two beta-carboline derivatives were identified. These findings may confer a better understanding upon outcrossing processes and favour the plant–pollinator relationships.
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