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Kavoosi G.,Shiraz University | Rowshan V.,Fars Research Center for Agriculture and Natural Resources
Food Chemistry | Year: 2013

The properties of essential oils obtained from Ferula assa-foetida oleo-gum-resins (OGRs) collectioned in three collections times in 15 June (OGR1), 30 June (OGR2) and 15 July (OGR3) 2011 was investigated. Essential oil from OGR1 was constituted high levels of (E)-1-propenyl sec-butyl disulfide (23.9%) and 10-epi-γ-eudesmol (15.1%). Essential oil from OGR2 was constituted high levels of (Z)-1-propenyl sec-butyl disulfide (27.7%) and (E)-1-propenyl sec-butyl disulfide (20.3%). Essential oil from OGR3 was constituted high levels of β-pinene (47.1%) and α-pinene (21.3%). Inhibitory concentration (IC50) for radical scavenging were 0.012-0.035, 0.025-0.047 and 0.035-0.066 mg/ml of essential oil obtained from OGR1, OGR2 and OGR3, respectively. Minimal inhibitory concentration (MIC) for Gram-positive and Gram-negative bacteria and fungi grpwth were 0.028-0.111, 0.027-0.107 and 0.018-0.058 mg/ml of essential oil obtained from OGR1, OGR2 and OGR3, respectively. Essential oils obtained from different OGRs have different composition and biological activity thus have different applications in food and health industry. Crown Copyright © 2012 Published by Elsevier Ltd. All rights reserved. Source


Kompani-Zare M.,Shiraz University | Soufi M.,Fars Research Center for Agriculture and Natural Resources | Hamzehzarghani H.,Shiraz University | Dehghani M.,Shiraz University
Catena | Year: 2011

A survey consisting of 146 first order gullies selected from five sites with different land use, soil and watershed properties was carried out to estimate the parameters of the empirical power function in order to describe the relationship between the gully volume and length in Fars province, Iran. Subsequently, the gullies were clustered into seven groups ("A" to "G") based on nine morphometric factors. The linearized functions were fitted to the natural logarithms of the volume and length in each group and the parameters " a" and " b" were determined. The obtained " a" and " b" parameters are in the ranges of 1.0-10.8 and 0.8-1.4, respectively. Comparison of ". a" and ". b" parameters in each group with the mean of nine factors and the mean soil, watershed and land use characteristics in each group showed that the gully volume and average cross section are correlated with the gully depths in different sections and the gully head slopes. Also it was shown that the parameters of fitted functions to the plots of gully volumes versus gully lengths are proportional to width at the gully heads. The gully widths at the top and bottom of the five meter sections are correlated with the average upstream watershed area of the gullies. © 2011 Elsevier B.V. Source


Rowshan V.,Fars Research Center for Agriculture and Natural Resources | Najafian S.,Payame Noor University
Journal of Herbs, Spices and Medicinal Plants | Year: 2013

Volatile components from leaves and flowers of Citrus limetta (Lemon), Citrus sinensis (Orange), Citrus medica (Cedrum), and Citrus maxima (Pomelo) were identified and analyzed by HS (headspace)-GC-MS on the Combi-PAL System technique. Constituents separated from leaf samples in lemon oil were Limonene (40.8%), Linalool (23.2%), and Citronellal (21.7%), and (E)-β-Ocimene (9.3%), Linalool (10.3%), 8-3-Carene (8.6%) were detected in leaf volatile of C. sinensis. The principal compounds form Cedrum flower oil were Limonene (73.7%), (E)-β-Ocimene (6.6%), and Linalool (13.0%). Main compounds in C. grandis leaf were Sabinene (5.2%), β-pinene (8.0%), Limonene (35.9%), (E)-β-Ocimene (7.4%), Linalool (22.1%), and Citronellal (15.6%). © Taylor and Francis Group, LLC. Source


Valifard M.,Shiraz University | Mohsenzadeh S.,Shiraz University | Kholdebarin B.,Shiraz University | Rowshan V.,Fars Research Center for Agriculture and Natural Resources
South African Journal of Botany | Year: 2014

Salvia mirzayanii is a medicinal and aromatic plant belonging to the Lamiaceae family, which is an endemic plant in Iran. In this study, the effects of different salt concentrations on total phenolic content, antioxidant activities and volatile components of the aerial parts of S. mirzayanii were studied. The results showed that total phenolic content increased with the increase in salt concentration. The increase was more pronounced under moderate salinity (3.8mg GAEg-1 DW at 6.8dSm-1 NaCl). Plants grown at 6.8dSm-1 NaCl displayed the highest DPPH ° scavenging activity with the lowest IC50 value (2.13mgml-1) compared to the control. The volatile components were identified and analyzed by HS (headspace)-GC-MS using the Combi PAL System technique. The main components of control plants were α-terpinyl acetate, 1,8-cineole and bicyclogermacrene. The proportions of these main compounds were differently affected by salinity stress. The results showed that the synthesis of both total phenolic and some important volatile components was induced by moderate salinity. © 2014 South African Association of Botanists. Source


Rowshan V.,Fars Research Center for Agriculture and Natural Resources | Farhadi F.,Lorestan University | Najafian S.,Payame Noor University
Industrial Crops and Products | Year: 2014

The essential oil of Rosmarinus officinalis L. is widely used as a folk medicine. In this study, the allelopathic activity of Dodonaea viscosa (aqueous, and acetone extracts 0, 30, 60 and 100%) on R. officinalis L. was investigated under laboratory conditions. The essential oil of air-dried samples was obtained by hydro distillation and was analyzed by gas chromatography (GC) and gas chromatography/mass spectrometry. The effect of the of D. viscosa on the chlorophyll content, photosynthetic rate, total phenols content, proline content, and chemical composition in rosemary was evaluated. A significant reduction of chlorophyll content and photosynthetic rate was observed. On the other hand, an increase was detected in the total phenols and proline content. Aqueous extract increased the 1,8-cineol content from 4.6% to 7.0%, the camphor content from 4.8% to 8.9% and the borneol content from 4.1% to 7.2%. As a result, allelopathic activity of D. viscosa on rosemary was confirmed. © 2014 Elsevier B.V. Source

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