1-1-diphenyl-2-picrylhydrazyl has been researched along with camphene* in 3 studies
3 other study(ies) available for 1-1-diphenyl-2-picrylhydrazyl and camphene
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Chemical study and antimalarial, antioxidant, and anticancer activities of Melaleuca armillaris (Sol Ex Gateau) Sm essential oil.
This study investigated the chemical composition (by using gas chromatography/flame ionization detection and gas chromatography/mass spectrometry, an antioxidant [1,1-diphenyl-2-picrylhydrazyl] [DPPH] radical-scavenging assay, and a 2,2'-azinobis-3-ethylbenzothiazoline-6-sulfonate [ABTS] radical cation-scavenging assay) and the antimalarial and cytotoxic activities of essential oil extracted from leaves of Melaleuca armillaris. Thirty-two components representing more than 98% of the total composition of the essential oil were identified. The main components were 1,8-cineole (85.8%), camphene (5.05%), and α-pinene (1.95%). The antioxidant activity by ABTS assay showed a mean (± standard deviation) 50% inhibitory concentration (IC(50)) value of 247.3 ± 3.9 mg/L, and the DPPH assay yielded an IC(50) value of 2183.6 ± 44.3 mg/L. The antimalarial study indicated that the essential oil had mild activity against the chloroquine-resistant Plasmodium falciparum FcB1 strain (IC(50), 27 ± 2 mg/L). The cytotoxic activity of this essential oil was tested against MCF7 human breast cancer cells and was found to be high (IC(50), 12 ± 1 mg/L). Topics: Antimalarials; Antineoplastic Agents, Phytogenic; Antioxidants; Benzothiazoles; Bicyclic Monoterpenes; Biphenyl Compounds; Chromatography, Gas; Cyclohexanols; Eucalyptol; Flame Ionization; Gas Chromatography-Mass Spectrometry; Melaleuca; Monoterpenes; Oils, Volatile; Picrates; Plant Extracts; Plant Leaves; Sulfonic Acids; Terpenes | 2011 |
Chemical composition and antioxidant activity of the essential oil of Juniperus phoenicea L. berries.
This study is designed to examine the chemical composition and antioxidant activity of the essential oil of Juniperus phoenicea L. ripe and unripe berries. GC and GC/MS analyses resulted in the detection of 42 components representing approximately 96.50-99.57% of the oils. Major components of the oils were α-pinene (58.61-77.39%), camphene (0.67-9.31%), δ-3-carene (0-10.01%) and trans-verbenol (0-5.24%). Antioxidant activities were determined by two different test systems, DPPH and ABTS radical scavenging activities. In both systems ripe berries exhibited better activity potential than the unripe ones. Topics: Antioxidants; Bicyclic Monoterpenes; Biphenyl Compounds; Chromatography, Gas; Fruit; Gas Chromatography-Mass Spectrometry; Juniperus; Monoterpenes; Oils, Volatile; Picrates; Terpenes | 2011 |
Antibacterial activity and the variation of Tanacetum parthenium (L.) Schultz Bip. essential oils from Turkey.
Water-distilled essential oils from herbal parts of Tanacetum parthenium from two different localities in Turkey were analyzed by GC and GC/MS. The essential oil of T. parthenium collected from Davutpasa-Istanbul location were characterized with camphor 49%, trans-chrysanthenyl acetate 22.1% and camphene 9.4%. Second plant sample is collected from the remote east end of the country Savşat-Ardahan location. The essential oil from this location was characterized with camphor 60.8% and camphene 6.8%. Unlike the former this sample contains trans-chrysanthenyl acetate in trace amount and cis- chrysanthenyl acetate in very small amount (0.6%) which is not present in the first sample. Antibacterial activity of the oils were evaluated for five Gram (+) and five Gram (-) bacteria by using a broth microdilution assay. The highest activity was observed on Bacillus subtilis, Staphylococcus aureus and methicillin-resistant S.aureus however when compared with positive control oils showed higher MIC values. The oil of Istanbul-sample showed highest activity on B. subtilis (125 microg/mL) and methicillin-resistant S. aureus (125 microg/mL) which is two fold concentration when compared with the positive control chloramphenicol (62.5 microg/mL). The oil of Ardahan sample showed the highest activity on S. aureus (125 microg/mL) which is likewise two fold concentration of the positive control chloramphenicol (62.5 microg/mL). DPPH scavenging activity was 59.3% of the oil from Davutpasa at 15 mg/mL concentration. When compared to positive control alpha-tocopherol (94.6%) Savşat oil (28.2%) showed low and Davutpasa oil showed medium DPPH scavenging activity. All of the oils showed toxicity to Vibrio fischeri in the TLC-bioluminescence assay. Topics: Aliivibrio fischeri; Bicyclic Monoterpenes; Biphenyl Compounds; Bridged Bicyclo Compounds; Camphor; Chromatography, Gas; Dose-Response Relationship, Drug; Drug Resistance, Bacterial; Free Radical Scavengers; Gas Chromatography-Mass Spectrometry; Gram-Negative Bacteria; Gram-Positive Bacteria; Microbial Sensitivity Tests; Monoterpenes; Oils, Volatile; Picrates; Tanacetum parthenium; Terpenes; Turkey | 2010 |