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Chemical composition and biological activities of polar extracts and essential oil of rose-scented geranium, Pelargonium graveolens.
- Source :
-
Phytotherapy research : PTR [Phytother Res] 2013 Aug; Vol. 27 (8), pp. 1206-13. Date of Electronic Publication: 2012 Oct 02. - Publication Year :
- 2013
-
Abstract
- Pelargonium graveolens (Geraniaceae) was characterized with respect to its chemical composition, antioxidant potential and antimicrobial activities. This is the first investigation focusing on the comparison of both essential oil and polar extracts from this species. The chemical composition of the essential oil of the aerial parts of P. graveolens was analyzed by gas chromatography/mass spectrometry. The main constituents of the oil were found to be β-citronellol (21.9%), citronellyl formate (13.2%), geraniol (11.1%), 10-epi-γ-eudesmol (7.9%), geranyl formate (6.2%) and (l)-linalool (5.6%). Nine flavonoids were identified by high-performance liquid chromatography-MS in leaf and flower extracts. Kaempferol 3-O-rhamnoside-glucoside, isorhamnetin aglycone, quercetin 3-O-glucoside, kaempferol 3,7-di-O-glucoside, quercetin 3-O-pentose and kaempferol 3-O-glucoside, quercetin 3-O-rhamnoside-glucoside, quercetin 3-O-pentoside-glucoside, myrisetin 3-O-glucoside-rhamnoside flavonoids were detected in methanolic and aqueous extracts, respectively. The total flavonoids ranged between 29.9 and 78.2 mg QE/g in flower water and methanol extracts, respectively, and 22.5 and 71.2 mg QE/g dry weight in leaf water and methanol extracts, respectively. The highest antioxidant activities using two methods of free radical scavenging capacities were obtained with the essential oil (9.16 mM of Trolox and 2.68 µg/ml). All P. graveolens essential oil and polar extracts were active against at least one bacterium.<br /> (Copyright © 2012 John Wiley & Sons, Ltd.)
- Subjects :
- Anti-Infective Agents chemistry
Anti-Infective Agents isolation & purification
Antioxidants chemistry
Antioxidants isolation & purification
Chromatography, Liquid
Flavonoids chemistry
Flavonoids isolation & purification
Gas Chromatography-Mass Spectrometry
Microbial Sensitivity Tests
Plant Leaves chemistry
Terpenes chemistry
Terpenes isolation & purification
Oils, Volatile chemistry
Pelargonium chemistry
Plant Extracts chemistry
Subjects
Details
- Language :
- English
- ISSN :
- 1099-1573
- Volume :
- 27
- Issue :
- 8
- Database :
- MEDLINE
- Journal :
- Phytotherapy research : PTR
- Publication Type :
- Academic Journal
- Accession number :
- 23027699
- Full Text :
- https://doi.org/10.1002/ptr.4853