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195 records · Page 11Linked to original sources
PubMed2005

New, rare and remarkable records of microfungi from the Slovakian Republic.

During an excursion to the Slovakian Republic (lower and upper Tatra) of the Botanical Institute of the University of Essen in 2004 we were able to collect about 150 species of microfungi as parasites or saprophytes on cultivated crops and wild plants. Some of them are new for the entire world and a few of them are new for the Slovakian Republic, e.g: Ramularia liliicola N. Ale-Agha, U. Braun & G.B. Feige on Lilium martagon L.; Septoria aegopodii DESM. Ex Kickx. F. on Aegopodium podagaria L.; Puccinia asarina Kunze on Asarum europaeum L.; Puccinia polygoni ALB. & SCHW. and Puccinia polygoni-amphibii PERS. on Bilderdykia convolvulus (L.) Du Mont.; Ramularia chamaenerii Rostr. and Mycosphaerella chamaenerii Saville on Epilobium angustifolium L.; Plasmopara pusilla (de By.) Schroet on Geranium sylvaticum L.; Cercosporidium depressum (Berk. & Br.) Deighta on Angelica sylvestris L. All specimens are located in the Herbarium ESS, Mycotheca Parva collection G.B. Feige & N. Ale-Agha.

Fungi↗
PubMedDate not supplied

Effect of some essential oils on microorganisms.

The essential oils tested viz., Cardiaca Oil, Mentha Oil, Artemisia Oil and Geranium Oil against pathogenic bacterial and fungal strains. Significant activity of all oils was found against all microorganisms. All the four oils showed a higher inhibition against all the microorganisms, except S. epidermidis at different level of concentrations used (1000 ppm and 500 ppm). It is clearly indicated that inhibition activity increased approximately 1 to 2 folds at 1000 ppm concentration as compared to 500 ppm. S. epidermidis has shown resistant towards all the oils at both the concentration while M. smegmatis and S. mutans have shown higher inhibition as compared to S. epidermidis.

Aspergillus niger↗
PubMed1989

[Studies on the chemical components and anti-tumour action of the volatile oils from Pelargonium graveoleus].

Three geranium oils were separated, identified and compared by high resolution cross-linked fused silica capillary GC and GC-MSD. It was found that their chemical constituents are very similar, but the contents of some components (linalool, citronellol, cis-caryophyllene and guaiene) differ appreciably. Pharmacological experiments showed that citronellol, citronellyl formate, geraniol and citronellyl acetate exhibited marginal antitumour activities. The activity of the latter two components has not been reported in the literature.

Acyclic Monoterpenes↗
PubMed1988

Effect of tannin on oxidative damage of ocular lens.

The protective effect of geraniin (tannin from Geranium thunbergii) against oxidative damage was examined in the mouse ocular lens. Oxidative damage in the lens was induced by diamide, diazene dicarboxylic acid bis (N,N-dimethylamide); diamide oxidized the sulfhydryl groups in both the membrane and cytoplasm but did not increase lipid peroxide. Geraniin showed protective effects on the changes in the Na+/K+ ratio, GSH level, Na,K-ATPase activity, GSH reductase activity and the sulfhydryl level of the membranous protein in the diamide-treated lens, but such protective effects of geraniin were not observed in the cell-free system of the lens. In addition, geraniin itself was unable to reduce GSSG to GSH and also unable to inhibit the oxidative reaction of the sulfhydryl group to diamide. These results suggest that in the intact lens geraniin would act primarily on the lens cell membrane surface to inhibit an influx of diamide into the inner part of the plasma membrane and the cytoplasm, and consequently that geraniin may protect sulfhydryl groups in the cell membrane and cytoplasm from their oxidation by diamide and keep the redox system of the lens in a normal state.

Animals↗
PubMed1994

[Methods for determining boron compounds in the air of a work area].

The studies performed with the chinalizarin method the for determination of the concentration of boric compounds in the air of the working area, proved to be impracticable in the presence of geranium and beryllium compounds. A spectrometric method for analysis of boric compounds was developed, based on their interaction with fluoric and ferric ions in the presence of sulfo-salicylic acid, and a complex compound was received of light orange colour to red, depending on the boric concentration. The maximum of absorption was at wave length of 577 mm. The sensitivity of the method was 0.001 mg boric in the analyzed sample -2 cm3. There is a linear dependence between the boric concentration and the optic density of the developed samples of interval 0.001-0.15 mg borium. The accuracy of the method expressed by coefficient of variation in % is in interval 12.4-6.3% for borium concentrations of 0.001-0.1 mg. The field where the method could be applied is defined in the presence of titanium, copper and lead compounds.

Air Pollutants, Occupational↗
PubMed1996

Essential oil analysis and field evaluation of the citrosa plant "Pelargonium citrosum" as a repellent against populations of Aedes mosquitoes.

A plant recently introduced into North America as the citrosa, Pelargonium citrosum ('Van Leenii'), has been marketed as a biological repellent against mosquitoes. Citrosa is claimed to repel mosquitoes within a 10 ft.2 (0.93 m2) area due to a continuous fragrant release of citronella oil. The total essential oil yield was 0.2 +/- 0.1% from fresh plant material. Chemical analysis by the authors revealed that combined essential oils of fresh greenhouse- and field-grown citrosa have 35.4 +/- 6.2% geraniol, 10.4 +/- 1.6% citronellol, 8.9 +/- 2.0% isomenthone, and 6.8 +/- 3.8% linalool. Both the morphology and essential oil of citrosa fall within the Pelargonium x asperum hybrid complex and are similar to 'Rosé', the commercial rose geranium. No character of morphology or essential oil of a Cymbopogon species yielding commercial citronella oil could be detected in the citrosa. The effectiveness of the citrosa as a repellent against field populations of spring Aedes spp. mosquitoes was evaluated and compared with a 75% deet (N,N-diethyl-3-methylbenzamide) formulation. Deet provided > 90% reduction in mosquitoes biting subjects for up to 8 h post-treatment. There was no significant difference between citrosa-treated and nontreated subjects.

Adult↗
PubMed2006

Reducing the symptoms of lymphoedema: is there a role for aromatherapy?

Lymphoedema is a chronic and debilitating condition caused by lymphatic insufficiency, which may have serious physical, social and psychological implications for the patient. It is usually managed by a combination of strategies aimed at protecting and decongesting the oedematous limb(s) and stimulating the development of supplementary lymphatic pathways to control swelling in the long-term. However, it is not known which therapies are the most effective. Anecdotally, the addition of aromatherapy oils to massage cream may have a positive effect on symptom relief in people with cancer, although evidence is again lacking. This paper describes a randomized trial of self-massage and skin care using a cream containing aromatherapy oils versus self-massage and skin care using a cream without aromatherapy oils on objective limb volume measurements and symptom relief as measured by the Measure Yourself Medical Outcome Profile 2 (MYMOP2) in a sample of people with lymphoedema. Results indicate that self-massage and skin care significantly improved patient-identified symptom relief and wellbeing for this sample. It also slightly, but not significantly reduced limb volume. However, aromatherapy oils, carefully chosen on the basis that they should benefit this group, did not appear to influence any improvement in these measures.

Anthropometry↗
PubMed2005

Quantitating adenylate nucleotides in diverse organisms.

Quantitation of cellular adenylate levels (i.e., ATP, ADP, AMP) has widespread applications in physiological, metabolic and energetic studies. We have compared classical adenylate extraction procedures (i.e., perchloric acid, boiling) with a previously unreported proteinase K-based extraction technique. Our results suggest that all three techniques are comparable in soft animal tissue, but proteinase K-based extractions consistently generated higher adenylate yields from a broad range of organisms, particularly those containing a cell wall (e.g., alga, bacteria, fungi, plant).

Adenine Nucleotides↗
PubMed2004

[Preparation of Ge/SiO2 nanometer-crystal doped glass and study of its photoluminescence property].

Ge/SiO2 nanometer-crystal doped glass was prepared through sol-gel method. The gel was synthesized through the hydrolysis of a complex solution of Si (OC2H5)4 and Ge(OC2H5)4. The product gel was then heated at 700 degrees C in H2. Ge crystals appeared after the heating-reducing process. X ray diffraction analysis showed that there were Ge cubic crystals formed in the gel glass. The photoluminescence spectroscopic analysis showed that the Ge/SiO2 fluorescence peaked at 576 nm with excitation wavelength of 494 nm. By using the Brus quantum confinement model, the fluorescence peak energy suggested that the mean size of Ge crystal was about 3 nm.

Computer-Aided Design↗