Essential oils (EOs) from the roots, stems and leaves of Plectranthus barbatus (A) and Plectranthuscaninus (B), cultivated in north Italy, were obtained by steam distillation and chemically characterised by gas chromatography-mass spectrometry. The highest yields were obtained from roots (268.15 and 673.60 mg/kg from A and B), followed by leaves (64.34 and 26.65 mg/kg) and stems (19.76 and 18.63 mg/kg). A total of 128 structures were identified in A and 121 in B. Fe++ chelating and antiradical activities (DPPH and ABTS) were evaluated: root and stem EOs showed the strongest activities, while EOs from leaves did not show relevant activities. All EOs were tested for their in vitro antimicrobial activity, showing optimal growth-inhibition in antibiogram (∅ > 35 mm) and MIC tests (32-64 μg/mL) against Candida albicans, while EOs from leaves of both species showed a good activity (25 < ∅ < 34 mm, MIC 64-128 μg/mL) against Escherichia coli.
GC-MS characterisation and biological activity of essential oils from different vegetative organs of Plectranthus barbatus and Plectranthus caninus cultivated in north Italy / F. Gelmini, P. Squillace, C. Testa, A.C. Sparacino, S. Angioletti, G. Beretta. - In: NATURAL PRODUCT RESEARCH. - ISSN 1478-6419. - 29:11(2015), pp. 993-998.
|Titolo:||GC-MS characterisation and biological activity of essential oils from different vegetative organs of Plectranthus barbatus and Plectranthus caninus cultivated in north Italy|
GELMINI, FABRIZIO (Corresponding)
BERETTA, GIANGIACOMO (Ultimo)
|Parole Chiave:||antimicrobial activity; essential oil; GC-MS; Plectranthus barbatus; Plectranthus caninus|
|Settore Scientifico Disciplinare:||Settore CHIM/08 - Chimica Farmaceutica|
|Data di pubblicazione:||2015|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1080/14786419.2014.965166|
|Appare nelle tipologie:||01 - Articolo su periodico|