In flowers C13-apocarotenoids are potent scent compounds.  Emerging areas of interest are oxidative cleavage of carotenoids and their further transformation to form a wide variety of volatile apocarotenoids.  In this presentation we will focus on the two species Osmanthus fragrans and Rosa chinensis mutabilis.  In both flowers scents carotenoid derived volatiles are abundant and sensory evaluation verified the importance of ionones to the floral scent perception of flowers of O. fragrans.  We will present our results of the biosynthesis of cleavage products in relation to floral development.  Enzymes involved in the primary cleavage reaction were identified and characterized.  In addition, we explored chemical and biochemical transformation reactions of primary cleavage products yielding diverse C13-apocarotenoids.

Occurrence, formation, and importance of volatile apocarotenoids in flowers of <i>Osmanthus fragrans</i> and <i> Rosa chinensis</i> mutabilis

243rd National Meeting (2012)

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Occurrence, formation, and importance of volatile apocarotenoids in flowers of Osmanthus fragrans and Rosa chinensis mutabilis