Lead-arsenic soil geochemical study as an exploration guide over the Killik volcanogenic massive sulfide deposit, Northeastern Turkey

WOS: 000230576800003A mountainous terrain, the eastern Pontide tectonic belt, located in northeastern Turkey, contains more than 60 known volcanogenic massive sulfide (VMS) deposits that differ in reserves (0.1-30 million tonnes) and grades. Soil geochemistry is conventionally used in exploration programs to discover concealed VMS deposits in the region. In the present study, Pb and As element pair were used as pathfinder elements to investigate the relationship of their anomalies to a completely delineated ore deposit (Killik VMS deposit) in an orientation survey that served as a natural physical model. Two hundred forty soil samples were analyzed in the present study. The two elements, which represent the opposite ends of the mobility range, revealed high contrast and overlapped each other at the location of the ore deposit due to enhancement of the anomalies by hydromorphic dispersion, which is an indication that soil samples would produce reliable results. The successful delineation of the deposit is remarkable considering the rough topography and the climatic limitations. Previously the extremely moist and temperate climate was thought to cause excessive leaching of the trace element pathfinders from the ore deposits to produce extensive anomalies usually extending away from the mineralization thus, leading to erroneous results and/or extensive anomalous areas. But the present research has shown that the method can be used effectively if the sampling and data evaluation is carefully conducted. (C)\ 2005 Elsevier B.V. All rights reserved

Chemical analysis and biological activities of essential oils from trunk-barks of eight trees

The present study was conducted to evaluate chemical compositions and antimicrobial and antioxidant activities of essential oils from trunk barks of Eucalyptus globulus, Juniperus oxycedrus L, Pinus nigra, Cedrus libani A. Rich, Abies equi-trojani, Cupressus sempervirens, Juglans regia and Alnus glutinosa Mill. The chemical composition of hydro-distilled essential oils of the 8 trunk-bark samples was analyzed by gas chromatography-mass spectrometry. E. globulus, J. oxycedrus, P. nigra, C. libani, A. equi-trojani, C. sempervirens, J. regia and A. glutinosa 56,52,34,56,57,46,13 and 14 components were identified in the essential oils of the plants mentioned above, respectively. Anti- oxidant activities were measured employing free radical, 2,2-diphenyl- 1-picrylhydrazyl (DPPH) scavenging ability of the samples. All essential oils tested showed moderate free radical scavenging activity. The essential oil of C. sempervirens showed the highest scavenging activity (SC5o: 70 ?g mL-1) while that of A. equi-trojani showed the lowest (SC 50: 5480 ?g mL'). The antimicrobial activity was studied by the agar diffu- sion method using 5 bacteria and a yeast-like fungus. The essential oils of the 8 species extended significant activity against C. tropicalis. The essential oil of C. libani was particularly active against the 5 bacteria studied with an minimal inhibitory concentration (MIC) at 250 ?g mL"1 inactive

Outbreak of tularaemia in Golcuk, Turkey in 2005: Report of 5 cases and an overview of the literature from Turkey

Tularaemia was diagnosed by TaqMan RT-PCR and microagglutination tests in 5 patients, all from a new settlement constructed after the earthquake of 1999. During the follow-up, 129 more cases were found in this settlement (data from the local Health Care Authority). In this study, clinical features of 5 cases are presented briefly, and the Turkish literature on past outbreaks of tularaemia is reviewed

Chemical and antioxidant properties of Laurocerasus officinalis Roem. (cherry laurel) fruit grown in the Black Sea region

Laurocerasus officinalis Roem. is a summer fruit highly characteristic of the Black Sea region. The edible parts of the fruit were tested for chemical composition and antioxidant properties. Total moisture, ash, protein, sugar, pectin, ascorbic acid, phenolic, and mineral contents of the fruit were determined. The antioxidant activity of the fruit was investigated using TLC plate and ferric thiocyanate methods. Its antioxidative character was also tested utilizing hydroxyl, DPPH, and superoxide radical scavenging activity measurements, using BHT, vitamin C, and Trolox as references. Besides being a good source of nutrients, L. officinalis was found to provide a rich source of protective antioxidant compounds. Its antioxidant and radical scavenging activities were comparable to or higher than those of the reference antioxidants. It appeared to have high mineral content. The concentrations of macroelements K, Mg, Ca, and Na were high at 2215 +/- 10.5, 179 +/- 11, 153 +/- 0.8, and 55 +/- 0.3 mg/kg, respectively, and the concentrations of trace elements Mn, Fe, Zn, and Cu were 24.2 +/- 1.3, 8.3 +/- 0.8, 1.9 +/- 0.2, and 0.8 +/- 0.1 mg/kg, respectively. In addition, the fruit showed very low contents of Pb, Ni, Co, and Cr, below the detection limits, which is considered to be a good food quality. As it is a rich source of protein, sugar, ascorbic acid, minerals, and antioxidants, L. officinalis is well worth further studies regarding its components possessing important health benefits and inclusion in the daily diet

KARAÇALI (Paliurus spina-christi Mill.) BALININ KARAKTERİSTİK ÖZELLİKLERİ

In this study characteristic properties of Jerusalem thorn, Christ's thorn or Garland thorn honey (Paliurus spina-christi Mill.) were investigated that obtained from different locations of Marmara and Trakya regions of Turkey. Eighteen honey samples were collected from Bursa, Edirne and Kirklareli regions by experienced beekeepers in 2018. Melissopalynological analysis, physicochemical parameters, pH, moisture, color, conductivity and optical rotation values, chemical parameters, proline, sugar components, total phenolic, flavonoid, tannin amounts and phenolic profile analyzes were analyzed of the honey samples Antioxidant and antimicrobial activities were tested as biological activities. According to the results of the study, it was found that the honey has a highly monofloral properties ranged from 69.5% and 96%. Antimicrobial activity values of the honey were compared with standard antibiotics and two different Manuka honeys. It was found that the honeys were showed higher antimicrobial and antifungal activities against 10 different pathogenic than Manuka honeys. As a result, it is thought that Jerusalem thorn honey have high biological active potential as monofloral honey for apitherapy applications. Copyright © 2019 Business Lawyer. All rights reserved.Scopu

KARAÇALI (Paliurus spina-christi Mill.) BALININ KARAKTERISTIK ÖZELLIKLERI

In this study characteristic properties of Jerusalem thorn, Christ's thorn or Garland thorn honey (Paliurus spina-christi Mill.) were investigated that obtained from different locations of Marmara and Trakya regions of Turkey. Eighteen honey samples were collected from Bursa, Edirne and Kirklareli regions by experienced beekeepers in 2018. Melissopalynological analysis, physicochemical parameters, pH, moisture, color, conductivity and optical rotation values, chemical parameters, proline, sugar components, total phenolic, flavonoid, tannin amounts and phenolic profile analyzes were analyzed of the honey samples Antioxidant and antimicrobial activities were tested as biological activities. According to the results of the study, it was found that the honey has a highly monofloral properties ranged from 69.5% and 96%. Antimicrobial activity values of the honey were compared with standard antibiotics and two different Manuka honeys. It was found that the honeys were showed higher antimicrobial and antifungal activities against 10 different pathogenic than Manuka honeys. As a result, it is thought that Jerusalem thorn honey have high biological active potential as monofloral honey for apitherapy applications. Copyright © 2019 Business Lawyer. All rights reserved.Scopu

Evaluation of phenolic compounds in Tilia rubra Subsp. caucasica by HPLC-UV and HPLC-UV-MS/MS

Profile of phenolic compounds of Tilia rubra subsp. caucasica was measured by high performance liquid chromatography coupled with ultraviolet and tandem mass spectroscopy. Three different extraction methods (methonolic, selective extraction, and acidic hydrolysis) were used to evaluate phenolic composition and antioxidant capacity in three different parts of T. rubra. The antioxidant activities of the species were investigated in terms of total phenolics and flavonoids, and cupric reducing antioxidant capacity and 1,1-diphenyl-2- picrylhydrazyl scavenging assays. Different phenolic compounds related to antioxidant activities of three different parts and three different extraction ways of T. rubra were determined by high performance liquid chromatography- ultraviolet and high performance liquid chromatography-mass spectroscopy. Gallic and protocatechuic acid were the main phenolic compounds in the all extracts and parts of Tilia rubra subsp. caucasica by high performance liquid chromatography-ultraviolet ranging from 356.20 to 159.83 and 1873.90 to 720.80 ?g phenolic compound/g dry sample, respectively. Epicatechin, luteolin, and rhamnazin were detected by high performance liquid chromatography-mass spectroscopy. © 2014 Copyright Taylor and Francis Group, LLC.Huseyin S¸ahin would like to thank TUB?TAK B?DEB for the financial support given to him. The authors would also like to thank Professor Salih Terziog?lu for identifying the tilia genus and Faculty of Pharmacology, Karadeniz Technical University for helping with the HPLC device

Investigation of some biological active properties of Anzer bee-pollen

41st FEBS Congress on Molecular and Systems Biology for a Better Life -- SEP 03-08, 2016 -- Kusadasi, TURKEYWOS: 000383616901875[No abstract available]FEB