Comparison of endogenous benzenoid compound between bud and anthesis stages in jasminum sambac flowers

Abstract

Chemical composition of the floral scent determined the emission of floral scent in plants that usually dominated by one or two classes of chemicals such as benzenoid compound. Objectives of this study are to measure characteristics of flower structure and to identify the content of endogenous benzenoid compounds exist in the bud and anthesis stages of J. sambac flower. Measurements of characteristics of flower structure were carried out, the flowers were extracted and essential oils were analyzed using High Performance Liquid Chromatography (HPLC). Based on characteristics of J.sambac flowers were measured, it showed that anthesis stage have increase in diameter flower and according observation, reproductive organ of the Jsambac flowers not exposed from corolla tube of this flower. The identification of endogenous benzenoid compound showed the detection of predominant benzaldehyde compound at 5.0 minutes of retention time which is slightly different in concentrations in the bud and anthesis stages. Opening of flower diameter enhance emission of volatile compound while, benzaldehyde compound which detected combine with other compound to produce floral odour. Odour of flower produced from the content of endogenous benzenoid compounds which are predominant benzaldehyde, attracting pollinator who will conduct the cross-pollination or allogamy, thus yield the genetic diversity of plant populations of Jsambac.