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  • AGRIS (United Nations, Food and Agriculture Organization)  (23)
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  • 1
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    Karaj (Iran): Reseach Institute of Forest and Rangeland
    Language: Persian
    Description: Various species of the Thymus (belog to Lamiaceae family) have many uses in food, sanitary, cosmetics and inparticular pharmaceutical industries. In present study , lack of seed germination of the Thyme samples in Natural Resources Gene Bank as well as the samples collected in the course of the national project were examined for the germination percentage and breaking the seed dormancy tests. Based on the tetrazolium test, it was found that lack of seed germination for the gene bank samples was due to long storage time as well as inappropriate seed collection time. Although, using tetrazolium test, acceptable percent of seed viability was obtained, but the result was not confirmed on filter paper. Thus, lack of outdoor seed germination and establishment may be resulted from seed deterioration and inappropriate collection time. Results indicated that the maximum chilling treatment should not exceed one month. There was not any significant difference between the treatments in terms of increasing chilling period and also maintaining the seed for long time would result in lower germination rate. It is suggested that regeneration for must be set each 5 year for the Thymus spp. ; Summaries (Fa, En) ; 46 p
    Keywords: Thyme ; Thymus (Genus) ; Essential Oil Crops ; Lamiaceae ; Plants ; Gene Banks ; Natural Resources ; Germination ; Dormancy Breakers ; Dormancy ; Seeds ; Thym ; Thymus (Genre) ; Plante A Huiles Essentielles ; Lamiaceae ; Plante ; Banque De Genes ; Ressource Naturelle ; Germination ; Substance Levant La Dormance ; Dormance ; Graine ; Tomillo ; Thymus (Genero) ; Plantas Aromaticas ; Lamiaceae ; Banco De Genes ; Recursos Naturales ; Germinacion ; Interruptores De Latencia ; Dormicion ; Semilla
    Source: AGRIS (Food and Agriculture Organization of the United Nations)
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  • 2
    Language: English
    In: Plant Cell, Tissue and Organ Culture (PCTOC), 2016, Vol.124(2), pp.275-281
    Description: Phenylethanoid glycosides (PeG) are a class of polyphenols found in some plants that have pharmaceutical effects as anti-inflammatories and anti-oxidants. The presence of PeG (acteoside) in the aerial parts of Scrophularia striata Boiss. has been demonstrated. Considerable progress has been made using plant cell cultures to stimulate formation and accumulation of secondary metabolites. The present study optimized phenylethanoid production from shake flasks to bioreactor using a cell culture of S. striata . The optimal conditions for production of cell biomass by scale-up to a bioreactor were determined to be a pH of 4.8, air flow rate of 0.5–1.5 l min −1 , and mixing speed of 110–170 rpm at 25 ± 1 °C in darkness. Growth parameters and PeG production were measured and compared with the results from the shake flasks. The results showed that cell biomass was high in the bioreactor (15.64 g l −1 DW) and in the shake flasks (14.16 g l −1 DW). The acteoside content in the bioreactor was 1404.20 μg g −1 DW, which is threefold higher than in the shake flasks (459.71 μg g −1 DW). The echinacoside concentration in the bioreactor was 1449.39 μg g −1 , 1.36-fold lower than in the shake flasks (1973.03 μg g −1 DW). This study established an efficient way for production of acteoside, the major PeG, in a bioreactor.
    Keywords: Acteoside ; Bioreactor ; Echinacoside ; Plant cell culture ; . Boiss.
    ISSN: 0167-6857
    E-ISSN: 1573-5044
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  • 3
    Language: English
    In: Plant Systematics and Evolution, 2009, Vol.282(1), pp.57-70
    Description: Tall fescue ( Festuca arundinacea Schreb. subsp. arundinacea ) is one of the most economically important forage grasses in cold and temperate regions of the world. In this study, we have assessed the genetic diversity and structure of wild Iranian tall fescue populations. Thirty-seven individuals from nine natural populations from northern, western, and southern Iranian mountain ranges were analyzed using six genomic-SSRs and five EST-SSRs primer pairs. Our analysis has demonstrated that transcribed EST-SSR regions showed levels of polymorphism similar to genomic-SSR regions. UPGMA, repeated bisection, and model-based Bayesian STRUCTURE clustering methods coupled with neighbor-net network were used to establish six divergent groups of individuals. F ST estimates among clusters showed moderate to low genetic structure. Within-group genetic diversity estimate H and partial correlations between genetic and geographic distances among populations suggested that western Zagros population was related to the rest of the Iranian individuals. The isolation-by-distance hypothesis was not supported by SSR data and the present geographical sampling.
    Keywords: Consensus groups ; Genetic variability ; Iran ; SSR ; Tall fescue
    ISSN: 0378-2697
    E-ISSN: 1615-6110
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  • 4
    Language: English
    In: Food chemistry, 2011, Vol.125(4), pp.1287-1290
    Description: Three wheat cultivars (Boolani, Roushan and Fornota) were inoculated with Puccinia triticina strain 140 and placed in greenhouse and concentrations of catechin, epicatechin and their enantiomers were monitored in three steps; healthy leaves before and after exposed and also diseased leaves after exposed. The concentration of catechin and epicatechin in infected plant ranged from 4.43 to 11.00 and 1.65 to 3.68 times higher than those in non-infected plant, respectively. Also, the healthy leaves of infected plants had more amounts of catechin and epicatechin than diseased leaves. Study of chiral separations by cellulose column, indicated that both enantiomers of catechin were found in healthy leaves of non-infected plants. However, in the leaves of wheat which were exposed to P. triticina, the concentration of (+) catechin increased while (−)-catechin disappeared in healthy and diseased leaves of infected plants. Furthermore, only (−)-epicatechin was found in all the samples. So, infection by pathogen caused a change in the biosynthesis and accumulation of catechin and also a change in the enantiomeric ration of catechin enantiomers in the leaves. ; Includes references ; p. 1287-1290.
    Keywords: Wheat ; Puccinia Recondita ; Food Analysis ; Catechin ; Rust Diseases ; Food Contamination ; Triticum Aestivum ; Model Food Systems ; Food Composition ; Cultivars ; Enantiomers ; Chemical Concentration ; Epicatechin
    ISSN: 0308-8146
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  • 5
    Language: English
    In: Journal of Ethnopharmacology, 30 July 2013, Vol.148(3), pp.934-939
    Description: (also known as Scotch thistle) is a medicinal plant of the Asteraceae family that is widely distributed in Europe and Asia. This plant has been long used in traditional medicine as a hypotensive, cardiotonic and diuretic agent. The present study is designed to isolate an active compound with ACE inhibition activity from , measure antioxidant activity, predict domain specificity and pharmacokinetic properties of the isolated compound. Methanolic extract of seeds, has been subjected to a repeated column chromatography to give a pure compound with Angiotensin Converting Enzyme (ACE) inhibition activity. The ACE inhibition activity was determined using hippuryl-L-histidyl-L-leucine (HHL) as substrate in an ACE assay. Structure of the pure compound, isolated from has been established by spectroscopic methods, including Infrared (IR), Nuclear Magnetic Resonance (NMR) and Mass spectrum analysis. In addition, antioxidant activity of the new isolated compound, was measured using 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging assay and compared with those of BHT and Trolox as positive controls. Enzyme type inhibition and ACE-C or N domain specificity of the new compound was further evaluated through molecular modeling and docking studies. Structure of the pure compound, isolated from (83±1% ACE inhibition activity at concentration of 330 μg/ml), has been established. The isolated compound possessed acceptable antioxidant activity (IC value of 2.6±0.04 μg/ml) in comparison with BHT (IC value of 10.3±0.15 μg/ml) and Trolox (IC value of 3.2±0.06 μg/ml). Molecular docking predicted competitive type enzyme inhibition and approximately similar affinity of the isolated compound for ACE-C and N domains. The results derived from computational and experiments, confirm the potential of the isolated compound, from as a new antihypertensive compound and give additional scientific support to an anecdotal use of in traditional medicine to treat cardiovascular disease such as hypertension.
    Keywords: Hypertension ; Onopordon Acanthium ; Angiotensin Converting Enzyme ; Antioxidant Activity ; Molecular Docking ; Pharmacy, Therapeutics, & Pharmacology
    ISSN: 0378-8741
    E-ISSN: 1872-7573
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  • 6
    Language: English
    In: Archives of Phytopathology and Plant Protection, 01 February 2013, Vol.46(4), pp.423-435
    Description: Insect phenoloxidase (EC 1.14.18.1) is the key enzyme in the development and immunity of insects, and its inhibition provides a new target for pest control. The Glyphodes pyloalis Walker is an important pest of mulberry trees in north of Iran and this pest interferes with the sericulture by...
    Keywords: Phenoloxidase ; 4-Hexylresorcinol ; Glutathione S-Transferase ; Agriculture
    ISSN: 0323-5408
    E-ISSN: 1477-2906
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  • 7
    Language: English
    In: Lipids, 2016, Vol.51(3), pp.349-356
    Description: Limited data are available assessing the effects of vitamin D and evening primrose oil (EPO) administration on markers of insulin resistance and lipid concentrations in gestational diabetes mellitus (GDM). This study was designed to evaluate the effects of vitamin D and EPO administration on insulin resistance and lipid concentrations among women with GDM. In this prospective randomized, double-blind, placebo-controlled clinical trial, 60 participants with GDM were divided into 2 groups of either 1000 IU vitamin D3 and 1000 mg EPO or placebo for 6 weeks. At the beginning and end of the study, fasting blood samples were obtained from the participants to measure related variables. After 6 weeks of intervention, changes in fasting plasma glucose (−3.6 ± 7.5 vs. +1.5 ± 11.4 mg/dL, P  = 0.04), serum insulin concentrations (−2.0 ± 5.3 vs. +4.6 ± 10.7 µIU/mL, P  = 0.004), homeostasis model of assessment (HOMA) insulin resistance (−0.5 ± 1.1 vs. +1.1 ± 2.5, P  = 0.003), HOMA-B cell function (−7.7 ± 23.3 vs. +17.4 ± 42.9, P  = 0.007) and the quantitative insulin sensitivity check index (+0.01 ± 0.02 vs. −0.01 ± 0.02, P  = 0.007) in the vitamin D plus EPO group were significantly different from the placebo group. In addition, compared with the placebo, vitamin D and EPO supplementation resulted in significant reductions in serum TAG (−20.0 ± 54.3 vs. +34.3 ± 38.2 mg/dL, P  〈 0.001), VLDL (−4.0 ± 10.9 vs. +6.9 ± 7.6 mg/dL, P  〈 0.001), TC (−22.1 ± 32.6 vs. +5.3 ± 20.1 mg/dL, P  〈 0.001), LDL concentrations (−18.0 ± 25.5 vs. +1.8 ± 15.7 mg/dL, P  = 0.001) and TC/HDL (−0.3 ± 0.4 vs. +0.3 ± 0.5 mg/dL, P  〈 0.001). We did not observe any significant effect of vitamin D and EPO supplementation on serum HDL concentrations. Clinical trial registration number : http://www.irct.ir : IRCT201509115623N52.
    Keywords: Vitamin D ; Evening primrose oil ; Supplementation ; Gestational diabetes
    ISSN: 0024-4201
    E-ISSN: 1558-9307
    Source: Springer Science & Business Media B.V.
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  • 8
    Language: Persian
    Description: Almost half of the country of iran is covered by quaternery deposist. These areas are considered as a principal component for development resursoe recognitation of quaternary deposist may use for precise land suitability and capability maooing in order to optimum use of lands. In this study review of literautures about quaternary deposist particularly in semnanin terms of importance and characteristics were investigated in this study. Quaternary deposits are investigated from process, types, distribution and suitability for flood spreading. ; Summaries(Fa,EN) ; 54p
    Keywords: Assessor Flavissimus ; Sediment ; Soil Biology ; Assessor Flavissimus ; Sediment ; Biologie Du Sol ; Assessor Flavissimus ; Sedimento ; Biologia Del Suelo
    Source: AGRIS (Food and Agriculture Organization of the United Nations)
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  • 9
    Language: Persian
    Description: The sub strategic plan for Recognition and Monitoring of Parameters Affecting on Land sliding is one of subprojects of "Development of Strategic Plan for Recognition of Parameters Affecting on Sediment and Soil Erosion and Degradation". In this research the scope of works for both research and executive sectors are defined while emphasize is done on the reconnaissance of present situation. Based on this scope and taking into account some factors such as financial, technical and expert resources, a national strategic plan for decreasing soil erosion and land degradation to a reasonable margin is developed. The duration of this strategic plan is 15 years and is well adopted with three consecutive "national 5 year development plans". It's expected that at the end of this strategic plan, current annual damages which is evaluated as much as 50 billion Rials, decreases an order of 50%. ; Summaries (Fa, En) ; 64 p.
    Keywords: Monitoring ; Landslides ; Soil Movement ; Determination Of Species ; Identification ; Sediment ; Erosion ; Degradation ; Surveillance ; Glissement De Terrain ; Mouvement Du Sol ; Determination Des Especes ; Identification ; Sediment ; Erosion ; Degradation ; Vigilancia ; Deslizamiento De Tierras ; Movimiento Del Suelo ; Identificacion ; Sedimento ; Erosion ; Degradacion
    Source: AGRIS (Food and Agriculture Organization of the United Nations)
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  • 10
    Language: Persian
    Description: Land races are important because of their role in sustainable agriculture, organized cropping, providing resistant genomes for stress conditions and also as a confident backbone for breeding programs. In 1998, during differnet expedition programs in Ardabil province small populations of species B.lomatogona were detected and their seeds were collected (five samples). The seeds of species B.maritima were collected from different regions of Khozestan, Hormozgan and Ardabil provinces (nine samples). Beet land races (red beet and fodder beet) which are used by people for their consumption and for cattle feeding, were collected from different regions of the country (160 samples). Since 1998 during four years, each year the seed of some of the accessories after germination ans thousand seed wheight determination were planted in Kamalabad research station. Morphological caracters such as leaf and petiol color were recorded. At harvesting time, root shape, root skin color, root flesh color and root ring color were recorded and technological caracters such as sugar content, impurities and mollases were determined. From each accessory one hundred roots were selected to be used in seed propagation. In addition to field evaluation, all the accessories were sampled for ploidy level determination which based on the results all of them were diploid. ; Summaries( Fa, En ) ; 42 P.
    Keywords: Beta ; Cytology ; Biology ; Genera ; Collections ; Species ; Beta Vulgaris ; Seed Collection ; Sugarbeet ; Genomes ; Taxa ; Land Varieties ; Iran Islamic Republic ; Beta ; Cytologie ; Biologie ; Genre ; Collection ; Espece ; Beta Vulgaris ; Collecte De Semences ; Betterave Sucriere ; Genome ; Taxon ; Variete Indigene ; Iran Republique Islamique ; Beta ; Citologia ; Biologia ; Genera ; Colecciones ; Especies ; Beta Vulgaris ; Coleccion De Semillas ; Remolacha Azucarera ; Genomas ; Taxa ; Variedades Indigenas ; Iran Republica Islamica ; Khuzestan ( Province ) ; Hormozgan ( Province ) ; Ardebil ( Province ) ; Kamal Aad Research Station
    Source: AGRIS (Food and Agriculture Organization of the United Nations)
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