The chemical composition of the essential oil obtained by steam distillation of the floral calyces of Ocotea bofo Kunth (Lauraceae) was studied by means of GC, GC-MS, and 1H, 13C, and bidimensional NMR (COSY, HSQC, HMBC). Twenty-five constituents were identified, and estragole (48.7%), B-phellandrene (19.6%) and sabinene (10.4%) were found to be the major components. Antimicrobial activity against six aerobic bacteria and five yeasts and antioxidant activity performed by photo-chemiluminescence (PCL), 1,1-diphenyl-2-picrylhydrazyl (DPPH), and b-carotene bleaching assays are reported. The oil showed fair inhibiting properties against bacteria and a good inhibition against most yeasts. Its radical scavenging and chain-breaking antioxidant properties were comparable to or better than those provided by synthetic controls. Particular emphasis has been given to the use of NMR as a fast and reliable tool to discriminate O. bofo essential oil from other commercial anethole-and estragole-rich oils, namely, Illicium verum, Foeniculum vulgare and Artemisia dracunculus.
Composition of the Volatile Fraction of Ocotea bofo Kunth (Lauraceae) Calyces by GC-MS and NMR Fingerprinting and Its Antimicrobial and Antioxidant Activity / Guerrini, A; Sacchetti, G; Muzzoli, M; MORENO RUEDA, G; M., E.; Medici, A; Besco, E; Bruni, Renato. - In: JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY. - ISSN 0021-8561. - 54:(2006), pp. 7778-7788. [10.1021/jf0605493 S0021-8561(06)00549-8]
Composition of the Volatile Fraction of Ocotea bofo Kunth (Lauraceae) Calyces by GC-MS and NMR Fingerprinting and Its Antimicrobial and Antioxidant Activity
BRUNI, Renato
2006-01-01
Abstract
The chemical composition of the essential oil obtained by steam distillation of the floral calyces of Ocotea bofo Kunth (Lauraceae) was studied by means of GC, GC-MS, and 1H, 13C, and bidimensional NMR (COSY, HSQC, HMBC). Twenty-five constituents were identified, and estragole (48.7%), B-phellandrene (19.6%) and sabinene (10.4%) were found to be the major components. Antimicrobial activity against six aerobic bacteria and five yeasts and antioxidant activity performed by photo-chemiluminescence (PCL), 1,1-diphenyl-2-picrylhydrazyl (DPPH), and b-carotene bleaching assays are reported. The oil showed fair inhibiting properties against bacteria and a good inhibition against most yeasts. Its radical scavenging and chain-breaking antioxidant properties were comparable to or better than those provided by synthetic controls. Particular emphasis has been given to the use of NMR as a fast and reliable tool to discriminate O. bofo essential oil from other commercial anethole-and estragole-rich oils, namely, Illicium verum, Foeniculum vulgare and Artemisia dracunculus.File | Dimensione | Formato | |
---|---|---|---|
Bofo_jafc.pdf
non disponibili
Tipologia:
Documento in Post-print
Licenza:
NON PUBBLICO - Accesso privato/ristretto
Dimensione
440.15 kB
Formato
Adobe PDF
|
440.15 kB | Adobe PDF | Visualizza/Apri Richiedi una copia |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.