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Identification of volatile organic compounds emitted from meranti and larch wood

100%

Waliszewska B., Zborowska M., Dukiewicz H., Wojciechowski T., Cofta G.

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

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2013

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tom 84

2

Dependences between the length of vegetation period of field plants and the content and composition of essential oil in celery leaves

84%

Najda A., Dyduch J.

Electronic Journal of Polish Agricultural Universities. Series: Horticulture

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2005

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tom 08

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nr 4

3

Perillyl alcohol, a pleiotropic natural compound suitable for brain tumor therapy, targets free radicals

84%

Gomes A. C., Mello A. L., Ribeiro M. G., Garcia D. G., Da Fonseca C. O., D’Alincourt Salazar M., Schonthal A. H., Quirico-Santos T.

Archivum Immunologiae et Therapiae Experimentalis

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2017

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tom 65

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nr 4

4

D-carvone, a monoterpene reverses alterations in heart rate, nitric oxide, aortic lipids and enzymatic antioxidant status in nitric oxide deficient hypertensive rats

84%

Rajeshwari T., Raja B.

International Letters of Natural Sciences

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2015

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tom 05

The present study was aimed to assess the antihyperlipidemic, antihypertensive and antioxidant effect of D-carvone, a monoterpene against Nω-nitro-L-arginine methyl ester hydrochloride (L-NAME) induced hypertension. Hypertension was prompted in adult male albino rats of the Wistar strain by oral administration of the L-NAME (40 mg/kg body weight) in drinking water for 4 weeks. Rats were treated with D-carvone (5, 10 and 20 mg/kg body weight) for four weeks. L-NAME treated rats exhibited significant increase in water intake, heart rate, aortic lipids level such as triglycerides (TG), total cholesterol (TC), free fatty acids (FFA) and significant decrease in the level of phospholipids (PL), plasma nitric oxide (NO). The activities of superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GPx) were decreased in erythrocytes of L-NAME induced hypertensive rats. Treatment with D-carvone restored all the above parameters to near normal level. These results suggest that D-carvone acts as an antihyperlipidemic, antihypertensive and antioxidant agent against L-NAME induced hypertensive rats.

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Occurrence of chlorophenols, chlorocatechols, chlorinated methoxyphenols and monoterpenes in soils of the drainage of the River Brda in the North West part of the Tucholski Landscape Park

84%

Michalowicz J., Duda W.

Polish Journal of Soil Science

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2004

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tom 37

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nr 2

Investigations were undertaken in the north-west part of the Tucholski Landscape Park (northern Poland). Samples were collected from soil adjacent to the banks of Lakes Suszek, Śpierewnik, Grochowskie, Raciąż and Stobno. The compounds were adsorbed by the solid-phase extraction method on octadecyl (C 18) layers, separated by thin-layer chromatography (TLC) and gas chromatography (GC) methods and analysed by the densitometry and mass spectrometry (MS) techniques respectively. In samples, phenol, 4-methylphenol, 4-nitrophenol, chlorophenols, chlorocatechols, chloroguaiacols, chlorosyringols, 3,4,5-trichloroveratrole, 5,6-dichlorovaniline and several monoterpenes were determined. The increase of the number and concentrations of the compounds investigated in summer and spring was stated.

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The solid phase microextraction method [SPME] in the analysis of monoterpene fraction of essential oils obtained from medicinal plants of Apiaceae family

84%

Madanecki P., Wierzchowska-Renke K., Guzewska J., Glowniak P., Ochocka J. R., Furmanowa M.

Herba Polonica

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2004

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tom 50

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nr 3-4

Solid Phase Microextraction (SPME) is used as a quick and easy alternative to standard distillation in essential oils composition assays. Due to the absence of the distillation step a considerable reduction of sample volume and of the time of sample preparation is possible. This method was used in experiments with essential oils obtained from Crithmum maritimum L. and Centella asiatica Urban (= Hydrocotyle asiatica L.). In this work the overground parts of Crithmum maritimum were analysed. The material was collected in 2003 from places of natural occurrence in Greece and Croatia, from a garden cultivation in Gdańsk, during the whole vegetation period, from plants from a control group and plants fertilised with Tytanit formula. Centella asiatica material was collected directly from an in vitro culture and from plants cultivated for six months in flowerpots, where they were transferred after five passages of in vitro culture. The analysis of components of monoterpene fraction was performed by gas chromatography. The percentage and composition of essential oils were different in all the tested samples. Crithmum maritimum material (from places of natural occurrence and from garden cultivation) shows the biggest differences in the content of a-pinene, 7-terpinene and sabinene. Plants treated with a Tytanit solution responded by increase of total percentage of essential oil with higher contents of 7-terpinene and sabinene. In Centella asiatica a higher percentage of essential oil (mainly a-pinene) was observed in roots than in leaves. Leaves treated with Ti ions had a higher amount of a-pinene than the control ones. Solid Phase Microextraction (SPME) method enables fast estimation of interference of each tested factor on the biosynthesis and composition of the essential oil. SPME was also useful in selection of the proper material for next experiments.

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Monoterpene and sesquiterpene hydrocarbons in the fruit essential oil of Phellodendron amurense Rupr.

84%

Lis A., Boczek E., Gora J.

Herba Polonica

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2003

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tom 49

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nr 1-2

Phellodendron amurense Rupr. (amur cork tree, Rutaceae), a strong tree, native to Eastern Asia, it is cultivated in Europe and America as a decorative plant. Phellodendri cortex contains alkaloids, limonoids, phenolic compounds and polysaccharides. It is used as antiinflammatory, antineuralgic and antidiabetic agent in stomach diseases in Far East Medicine. Air-dried fruits contain 1.9% of essential oil. Monoterpene and sesquiterpene hydrocarbons were investigated. Hydrocarbon fractions were isolated by vacuum distillation and flash chromatography. Components of fractions were identified by GC, GC/MS, and 'H-NMR spectroscopy. Fifteen monoterpene hydrocarbons representing 72% of the oil with myrcene (67,3%) and nineteen sesquiterpene hydrocarbons representing 1 1% of the oil with ß-caryophyllene (7.0%) and germacrene D (1.6%), were identified.

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The synergistic effect of piperonyl butoxide on the molluscicidal potential of monoterpenes and phenylpropenes against Theba pisana

67%

Abdelgaleil S. A. M., Saad M. M. G.

Journal of Plant Protection Research

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2018

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tom 58

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nr 4

The molluscicidal activity of six monoterpenes and two phenylpropenes against Theba pisana adults was evaluated using fumigation and direct contact methods. In the fumigant toxicity assay, (-)-citronellal showed the highest toxicity with LC50 value of 7.79 µl · l−1 air after 24 h of treatment, followed by (-)-terpinen-4-ol (LC50 = 12.06 µl · l−1), (-)-menthone (LC50 = 12.28 µl · l−1 air) and p-cymene (LC50 = 16.07 µl · l−1 air). Eugenol and trans-cinnamaldehyde were the most potent contact toxicants against T. pisana. Their LD50 values were 0.18 and 0.29 mg · snail−1 after 24 h of treatment, respectively. These two compounds were more toxic than a reference molluscicide, methomyl. In contrast, α-terpinene and (-)-citronellal were the least toxic compounds. In another experiment, the synergistic effect of piperonyl butoxide (PBO) on tested monoterpenes and phenylpropenes by topical application was examined. The results showed that the toxicity of the tested compounds was increased when mixed with PBO at a ratio [compound/PBO (1 : 2)] except for α-pinene and (-)-terpinen-4-ol in which the toxicity of binary mixtures was less than for single compounds. The synergistic effect of PBO improved with increased exposure time. The highest synergistic effect was observed with (-)-menthone and α-terpinene with synergistic ratios of 9.25 and 4.37, respectively. Monoterpenes and phenylpropenes and their mixtures with PBO described herein merit further studies as potential T. pisana control agents.

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Annual and seasonal changes in foliar terpene content and emission rates in Cistus albidus L. submitted to soil drought in Prades forest (Catalonia, NE Spain)

67%

Llusia J., Penuelas J., Ogaya R., Alessio G.

Acta Physiologiae Plantarum

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2010

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tom 32

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nr 2

We measured the gas exchange and foliar terpene concentrations and terpene emission rates of Cistus albidus throughout the seasons of two annual periods (2003 and 2005) of contrasting precipitations (900 vs. 500 mm) and in response to experimental drought in a Mediterranean forest of southern Catalonia. C. albidus showed a typical seasonal oscillation of photosynthetic rates and stomatal conductance. Maximum photosynthetic activity appeared in the spring of the first year of the study and minimum ones in both summers. Net photosynthetic rates and stomatal conductance tended to decrease with drought treatment. In the first year, Cistus albidus presented maximum values of stored terpenes in autumn and winter and minimum values in spring and summer. Average concentrations in the first year were 154 and 96 µg g⁻¹ dry matter (d.m.) for control and drought, respectively. Average concentrations in the second year were higher, 339 and 263 µg g⁻¹ (d.m.) for control and drought, respectively. The most abundant terpene was zingiberene, followed by aromadendrene, germacrene, (-)-α-cedrene, and sesquiphellandrene. The drought treatment tended to decrease terpene content, but not significantly. Considering all the treatments together, total terpene emissions ranged between practically 0 (spring 2003) to 9 µg g⁻¹ (d.m.) h⁻¹ (winter 2003). In the second year, total terpene emission rates decreased 39% in control plants, and 29% in drought plants. Significant seasonal differences in emission rates were found. Total emission rates tended to be higher in the drought treatment, especially in spring and autumn. These results help for a better understanding of the behavior of plant volatiles in Mediterranean conditions interannualy and seasonally, an issue of great interest for forest flammability and atmospheric chemistry.

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Terpenoids from a multiple shoot culture of Telekia speciosa

67%

Stojakowska A., Malarz J., Kisiel W.

Acta Societatis Botanicorum Poloniae

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2011

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tom 80

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nr 3

Multiple shoots of Telekia speciosa were cultivated on MS medium containing 4.44 µM BAP and 0.54 µM NAA, solidified with agar. After eight weeks of culture the shoots were harvested and extracted with methanol. From the methanol extract one pseudoguaianolide – 2,3-dihydroaromaticin and three thymol derivatives: 8-hydroxy-9,10-diisobutyryloxythymol, 10-isobutyryloxy-8,9-epoxythymyl isobutyrate and 10-(2-methylbutyryloxy)-8,9-epoxythymyl isobutyrate were isolated as major secondary metabolites. Moreover, the shoots produced megastigmane and monoterpene glucosides, which were isolated for the first time from the species. The content of 2,3-dihydroaromaticin in the shoot culture was similar to that found in the intact plant, whereas yields of the three thymol derivatives were higher from multiple shoots than from the plants grown in the open field.

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Proton transfer reaction mass spectrometry approach to monitor monoterpenes emission from Aleppo pine (Pinus halepensis) woods growing in different locations

67%

Sandak J., Sandak A., Boschetti A., Dimauro M., Negri M.

Folia Forestalia Polonica. Series B - Drzewnictwo

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2010

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tom 41

Ograniczanie wyników

Identification of volatile organic compounds emitted from meranti and larch wood

Dependences between the length of vegetation period of field plants and the content and composition of essential oil in celery leaves

Perillyl alcohol, a pleiotropic natural compound suitable for brain tumor therapy, targets free radicals

D-carvone, a monoterpene reverses alterations in heart rate, nitric oxide, aortic lipids and enzymatic antioxidant status in nitric oxide deficient hypertensive rats

Occurrence of chlorophenols, chlorocatechols, chlorinated methoxyphenols and monoterpenes in soils of the drainage of the River Brda in the North West part of the Tucholski Landscape Park

The solid phase microextraction method [SPME] in the analysis of monoterpene fraction of essential oils obtained from medicinal plants of Apiaceae family

Monoterpene and sesquiterpene hydrocarbons in the fruit essential oil of Phellodendron amurense Rupr.

The synergistic effect of piperonyl butoxide on the molluscicidal potential of monoterpenes and phenylpropenes against Theba pisana

Annual and seasonal changes in foliar terpene content and emission rates in Cistus albidus L. submitted to soil drought in Prades forest (Catalonia, NE Spain)

Terpenoids from a multiple shoot culture of Telekia speciosa

Proton transfer reaction mass spectrometry approach to monitor monoterpenes emission from Aleppo pine (Pinus halepensis) woods growing in different locations