Morphoanatomic Study of Jacaranda ulei and Variability of Its Volatile Oils

Abstract

Jacaranda ulei Bureau & K.Schum., Bignoniaceae, is an evergreen shrub used to treat skin diseases, rheumatism, urinary tract disorders, and dysentery. This study aimed to perform a morphoanatomical study of J. ulei and analyse the composition and chemical variability of the volatile oils from its leaves over 11 months. The identification of the volatile oil components from the leaves was performed by gas chromatography coupled with mass spectrometry (GC-MS). The major chemical components of the volatile oils from the leaves were γ-amorphene (1.3-27.1%), n-heneicosane (0.4-59.5%), ethyl hexadecanoate (0.4-8.1%), eicosane-3-phenyl (0.9-18.5%), squalene (March-66.4%, May-8.3%, August-17.6%, September-0.64%, and November-6.47%), and 9-octadecenamide (50.9% in the June sample). Two clusters were identified: one was characterized by the vegetative period and the other by the flowering period of the species, showing that the chemical compounds of the volatile oils varied according to phenological factors. The anatomical description contributed to the taxonomic identification of the species. This is the first report on the volatile oil obtained from J. ulei

Reproductive biology of Jacarada ulei Bureau & K. Schum. (Bignoniaceae)

“…At Agua Limpa Farm, 148 plants were marked and used in the floral experiments. Additionally, 53 plants from the Biological Station and 30 plants from the Olympic Center were observed regarding phenological events, as to complement data published by Nunes et al (2020). Voucher specimens were deposited at the Herbarium UB under the number of collector: Ribeiro (11.696 to 11.710) and Miranda TD (06 to 10).…”