Volatile Composition and Antibacterial Activity of Leaves of Chorisia Speciosa

Abstract

Abstract. In this study, volatile composition of leaves of Chorisia speciosa was studied first time. The oil was extracted by microwave-assisted oil extraction and constituents were separated and characterized by gas chromatography - mass spectrometry. A yield of 0.21% was obtained and a total of 25 constituents were identified. Most dominating constituents were: caryophyllene (32.26 %), bicyclogermacrene (9.88 %), humulene (9.26 %), α-selinene (9.18 %) and β-elemene (8.06 %). The anti-bacterial activity of volatile oil was also evaluated against four pathogenic strains. The oil showed different zones of inhibition against different microbes where strongest activity was found against S. aureus (25 mm), moderate activity (15 mm) against E. coli and no activity against S. typhi (9 mm) at the dose value of 3.64 mg. The observed antibacterial activity was due to the presence of various biologically active major and minor constituents.

Exploring the volatile metabolites of three Chorisia species: Comparative headspace GC–MS, multivariate chemometrics, chemotaxonomic significance, and anti-SARS-CoV-2 potential

“… a Previously identified from C. speciosa flowers using hydro-distillation ( Abdelmalek, 2016 ). b Previously identified from C. speciosa leaves using microwave-assisted extraction ( Kausar et al, 2020 ). c Previously identified from C. pentandra flowers using the headspace technique ( Pettersson et al, 2004 ).…”

“… b Previously identified from C. speciosa leaves using microwave-assisted extraction ( Kausar et al, 2020 ). …”

“…In this respect, research studies have revealed the remarkable metabolic uniformity of different species studied so far, particularly concerning their flavonoidal composition ( Refaat et al, 2013 , Refaat et al, 2014 , Refaat et al, 2015a , Refaat et al, 2015b , Abouelela et al, 2018 , Abouelela et al, 2019 ). In contrast, the volatile constituents of these plants has been occasionally explored, including those of C. pentandra flowers, stem bark, and heartwood in addition to C. speciosa flowers and leaves ( Pettersson et al, 2004 , Abdelmalek, 2016 , Kausar et al, 2020 , Alade et al, 2021 ), while no data are available on the possible chemosystematic significance of such volatile metabolites within this genus.…”

Genus <i>Ceiba</i> Mill. in Brazil: A comprehensive review on its ethnopharmacology, phytochemistry and bioactivities

“…C. speciosa is also capable of producing essential oils, which, after being obtained from the leaves, were identified through GC-MS as major components: caryophyllene (32.26 %), bicyclogermacrene (9.88 %), humulene (9.26%), αselinene (9.18 %), and β-elemene (8.06 %) (Kausar et al, 2020).…”

Volatile Constituents of Leaves of Trifolium alexandrinum

“…Because of fertile lands, these countries have diversity in plants of medicinal importance, and a variety of medicinal plants are grown and harvested. Although, many plants have been studied, however, there are numerous other plants either uninvestigated or have rare literature on them, and hence, there is a great need to explore their essential oil composition and medicinal properties especially antimicrobial activity [4][5][6] .…”