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Virendra Singh - One of the best experts on this subject based on the ideXlab platform.
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essential oil composition of damask Rose rosa damascena mill distilled under different pressures and temperatures
Flavour and Fragrance Journal, 2002Co-Authors: G Kiran D Babu, Bikram Singh, Virendra P Joshi, Virendra SinghAbstract:Experiments were conducted on field distillation unit to distil Rose oil and Rose Water from the fresh flowers of Damask Rose (Rosa damascena Mill.) under different pressures and temperatures to study and compare the essential oil composition by GC-FID. The monoterpene hydrocarbons and esters were found to be in traces, and stearoptene content was found to be higher in the oil distilled under high pressure, as compared to oil produced under atmospheric pressure. In general, the percentage of total alcohols (55.25-83.41%) in Rose oil increased with the increase in pressure and temperature of the distillation. Physicochemical properties of Rose oil distilled at varying level of temperatures and pressures are discussed. A comparative study was also conducted of Rose oil constituents from dichloromethane-extracted Rose Water and redistilled Rose Water under atmospheric and higher pressure. At higher pressure early-eluting components in the GC column were present in traces and decrease in total alcoholic content was observed. It can be concluded that distillation conducted under pressure does not yield good quality oil. However, dichloromethane-extracted Rose oil from Rose Water carries a higher amount of 2-phenylethyl alcohol. The total Rose alcohol content present in Rose Water was higher than in Rose oil.
Soheila Samadi - One of the best experts on this subject based on the ideXlab platform.
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application of response surface method for optimization of dispersive liquid liquid microextraction of Water soluble components of rosa damascena mill essential oil
Journal of Chromatography A, 2009Co-Authors: Hassan Sereshti, Maryam Karimi, Soheila SamadiAbstract:Dispersive liquid-liquid microextraction (DLLME) coupled with gas chromatography-mass spectrometry (GC-MS) was applied for the determination of Rose Water constituents. The effective parameters such as volume of extraction and disperser solvents, temperature, and salt effect were inspected by a full factorial design to identify important parameters and their interactions. It showed that salt addition had no effect on the efficiency. Next, a central composite design was applied to obtain optimum point of the important parameters. The optimal condition was obtained as 37.0 microL for extractor, 0.42 mL for disperser and temperature for 48 degrees C. The main components that were extracted at the optimum point were benzeneethanol (24.87%), geraniol (23.07%), beta-citronellol (22.38%), nerol (8.48%), eugenol (5.98%) and linalool (5.62%).
Ajai K Yadav - One of the best experts on this subject based on the ideXlab platform.
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volatile constituents of essential oil and Rose Water of damask Rose rosa damascena mill cultivars from north indian hills
Natural Product Research, 2011Co-Authors: Ram S Verma, Rajendra C Padalia, Amit Chauhan, Anand Singh, Ajai K YadavAbstract:Rosa damascena Mill. is an important aromatic plant for commercial production of Rose oil, Water, concrete and absolute. The Rose Water and Rose oil produced under the mountainous conditions of Uttarakhand were investigated for their chemical composition. The major components of Rose Water volatiles obtained from the bud, half bloom and full bloom stages of cultivar 'Ranisahiba' were phenyl ethyl alcohol (66.2-79.0%), geraniol (3.3-6.6%) and citronellol (1.8-5.5%). The Rose Water volatiles of cultivar 'Noorjahan' and 'Kannouj' also possessed phenyl ethyl alcohol (80.7% and 76.7%, respectively) as a major component at full bloom stage. The essential oil of cultivar 'Noorjahan' obtained from two different growing sites was also compared. The major components of these oils were citronellol (15.9-35.3%), geraniol (8.3-30.2%), nerol (4.0-9.6%), nonadecane (4.5-16.0%), heneicosane (2.6-7.9%) and linalool (0.7-2.8%). This study clearly showed that the flower ontogeny and growing site affect the composition of Rose volatiles. The Rose oil produced in this region was comparable with ISO standards. Thus, it was concluded that the climatic conditions of Uttarakhand are suitable for the production of Rose oil of international standards.
Sharafati Chaleshtori Reza - One of the best experts on this subject based on the ideXlab platform.
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Chemical Composition, Antioxidant and Antibacterial Activity of Bunium persicum, Eucalyptus globulus, and Rose Water on Multidrug-Resistant Listeria Species
2018Co-Authors: Sharafati Chaleshtori Farhad, Saholi Mohamad, Sharafati Chaleshtori RezaAbstract:This research was aimed at investigating the antioxidant and antibacterial activity of Bunium persicum, Eucalyptus globulus, and Rose Water on multidrug-resistant Listeria species. The antibiotic resistance of Listeria spp obtained from seafood samples were determined by the Kirby-Bauer method. The antioxidant and antibacterial activity of the essential oils and extracts were evaluated using ferric reducing antioxidant power and microdilution methods, respectively. A total 2 samples (1.88%) were positive for Listeria spp. L monocytogenes was found to be resistant to ampicillin, amoxicillin/clavulanic acid, penicillin, vancomycin, and kanamycin. B persicum essential oil showed the greatest antioxidant activity (248.56 ± 1.09 µM Fe2+/g). The E globulus essential oil showed consistently strong antimicrobial activity against L monocytogenes and L grayi, while Rose Water showed no antimicrobial activity against any of the tested bacterial strains. The results showed that after adding the B persicum and E globulus essential oils to bacteria, the cell components' release increased significantly
Sharafati Chaleshtori R. - One of the best experts on this subject based on the ideXlab platform.
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Chemical Composition, Antioxidant and Antibacterial Activity of Bunium persicum, Eucalyptus globulus, and Rose Water on Multidrug-Resistant Listeria Species
2018Co-Authors: Sharafati Chaleshtori F., Saholi M., Sharafati Chaleshtori R.Abstract:This research was aimed at investigating the antioxidant and antibacterial activity of Bunium persicum, Eucalyptus globulus, and Rose Water on multidrug-resistant Listeria species. The antibiotic resistance of Listeria spp obtained from seafood samples were determined by the Kirby-Bauer method. The antioxidant and antibacterial activity of the essential oils and extracts were evaluated using ferric reducing antioxidant power and microdilution methods, respectively. A total 2 samples (1.88) were positive for Listeria spp. L monocytogenes was found to be resistant to ampicillin, amoxicillin/clavulanic acid, penicillin, vancomycin, and kanamycin. B persicum essential oil showed the greatest antioxidant activity (248.56 ± 1.09 µM Fe 2+ /g). The E globulus essential oil showed consistently strong antimicrobial activity against L monocytogenes and L grayi, while Rose Water showed no antimicrobial activity against any of the tested bacterial strains. The results showed that after adding the B persicum and E globulus essential oils to bacteria, the cell components� release increased significantly. © The Author(s) 2018
