VIIth INTERNATIONAL SYMPOSIUM INTERDISCIPLINARY REGIONAL RESEARCH - ISIRR 2003 HUNGARY – SERBIA & MONTENEGRO – ROMANIA Hunedoara, ROMANIA 25th – 26th, September, 2003 Section IV – USES OF NATURAL RESOURCES IN REGIONS - 25th September, 2003 25th September, 2003 1100 - 1300 1500 - 1900 26th September, 2003 1100 - 1300 “SIDERURGISTUL” CLUB - AMPHITHEATER No.1 – HUNEDOARA Ştefan MAKSAY – President & Chairman Gallia BUTNARU – Member Cosmina ANDRĂŞESCU – Member Name of the Authors Title of Presented Papers 0401. Sanja O. Synthesys and Antimicrobial Activity of PODUNAVAC-KUZMANOVIĆ, Copper (II), Cobalt (II) and Nickel (II) Ljiljana VOJINOVIĆ, Complexes with 2-Aminobenzimidazole Dragoljub M. CVETKOVIĆ - SERBIA & MONTENEGRO 0402. Sonja M. DJILAS, 2,2' - Diphenyl-1 - Picrylhydrazyl Radical- Jasna M. ČANADANOVIC- Scavenging Activity of Different Teucrium BRUNET, Montanum L. Extracts Gordana S. ĆETKOVIC, Vesna T. TUMBAS - SERBIA & MONTENEGRO 0403. Sanja O. Physico-Chemical Characterisation And PODUNAVAC-KUZMANOVIĆ, Biological Activity Of Zinc (II) Complexes Gordana S. ĆETKOVIĆ, With 2-Amino and 2-Methylbenzimidazole Dragoljub M. CVETKOVIĆ Derivatives - SERBIA & MONTENEGRO 0404. Atila SALVAI, Present State of Flood Control and Water Pavel BENKA Streams Improvement in Voivodina - SERBIA & MONTENEGRO 15 0405. Dorina MODRA, Esterification and Polyesterification Reactions Cosmina ANDRAŞESCU, With Industrial Applications. Polyesters Ramona OPROIU, Obtained from Mixture of Dicarboxilic Acids Remus NUŢIU – ROMANIA and Diols 0406. LÁSZLÓ, Zs., Colour Changes of Dried Onion Treated HALÁSZ-FEKETE, M. Irradiation and Ozonation HERCZEG-BARA, O. FEHÉR, L. KISPÉTER, J. - HUNGARY 0407. D. OBREHT, Glu-1 And Glu-3 Allelic Variability of Genus M. DAVIDOVIC, Triticum – Genetic Resources in Wheat Lj. VAPA Breeding - SERBIA & MONTENEGRO 0408. Lj. VAPA, The Presence and the Origin of 1bl/1rs M. DAVIDOVIC, Translocation in Bread Wheat Cultivars Bred D. OBREHT, in Serbia S. DENCIC - SERBIA & MONTENEGRO 0409. M. BODROŽA-SOLAROV, Seed of Amaranthus Cruentus as Breakfast J. MASTILOVIĆ, Cereal and Snack Product B. FILIPČEV, A. TORBICA - SERBIA & MONTENEGRO 0410. Bojana KLASNJA, Energy Production from Short Rotation Poplar Sasa ORLOVIC, Plantations Milan DREKIC, Miroslav MARKOVIC - SERBIA & MONTENEGRO 0411. Gallia BUTNARU, Morpho - Agronomic Variability of Triticum Ioan SARAC, Monococcum L. Land Races in the Timisoara Alin BLIDAR, Area Laszlo HOLLY, Istvan MAR – ROMANIA 0412. F. BORCAN, The Influence of Cycocel in the Process of G. BORCAN – ROMANIA Wheat’s Improvement and Development 0413. Tamás BARNA - HUNGARY The Role of Mycorrhizae in Afforestation 0414. Atila SALVAI, New Strategy for Water Supply in Vojvodina Borivoje MIJATOVIC, Dragica STOJILJKOVIĆ - SERBIA & MONTENEGRO 16 0415. Dana VLASCICI, Comparative Study For Determination Of Otilia BIZEREA, Nitrate In Meat Products Eugenia FĂGĂDAR-COSMA, Claudiu BRUMARU, Gabriela PAPOE – ROMANIA 0416. Predrag RADISIC, Betula Pollen Season in the Danube – Kris – Branko SIKOPARIJA, Mures – Tisza Euroregion (2000-2002) Miklos JUHASZ, Nikoleta IANOVICI - SERBIA & MONTENEGRO 0417. FOARCE Alice, Brassica Napus Ethylic Extract as Ecological MERCEA Maria, Phytoregulating Agent LAICHICI Maria, GROZAV Mata, NEAMTIU Ileana – ROMANIA 0418. Eugenia FAGADAR-COSMA, The Valorization of a Residual Product from Maria LAICHICI, the Synthesis of Bis (Diisopropylamine) Dana VLASCICI, Chlorophosphine as Growth Regulator Maria MERCEA, Liliana OSTOPOVICI – ROMANIA 0419. Ioan COSTE, Notes on Anthropohilous Flora and G.Gabriel ARSENE – ROMANIA Vegetation in the City of Timisoara 0420. ANAČKOV Goran, Genus Allium L. 1753 (Amarayllidales, VUKOV Dragana, Alliaceae) on Flooded Habitats in Southern BOŽA Pal, Part of the Pannonian Plane (Vojvodina, IGIC Ružica Serbia) - SERBIA & MONTENEGRO 0421. Sasa ORLOVIC, Physiological and Growth Characteristics of Bojana KLASNJA, White Willow (Salix Alba L.) Clones Andrej PILIPOVIC, Nenad RADOSAVLJEVIC - SERBIA & MONTENEGRO 0422. Pavel BENKA, GIS in Irrigation System Management – Vladimir BULATOVIC Abstract - SERBIA & MONTENEGRO 0423. MILYANOVICY Branko, Zooplankton and Macrozoobenthos NEMESH Karolina, Communities as Water Quality Indicators PANKOV Nemanya, in Danube-Tisza-Danube Canal System of the TEODOROVICY Ivana, Bachka Region – Abstract STESHEVICY Daniyela - SERBIA & MONTENEGRO 17 0424. ŢĂRĂU D., West Romania Soils Researching and VLAD H., Monitoring as a Part of a Lasting ŢĂRĂU IRINA, Development – Abstract BADEA ANCA, GEAMBAŞU N., JAMPA A., FLOREA M., DOLOGA D. – ROMANIA 0425. Mariana ALBULESCU, Study Regarding the Growth Activity Victor ROJANCOVSCHI of Flavonols in Organic Agriculture – Abstract - SERBIA & MONTENEGRO 0426. Karolina NEMESH, Quantitative and Qualitative Composition of Vlasta PUYIN, Phyto- and Zooplankton in the Danube-Tisza- Milan MATAVULY Danube Canal Water of the Bachka Region – - SERBIA & MONTENEGRO Abstract 0427. PETROVICY O., Myxobacteria as Bioindicators of Water RADNOVICY D., Organic Load of the Bachka Region Danube- GAYIN S., Tisza-Danube Canal Network – Abstract SIMEUNOVICY Y., MATAVULY M. - SERBIA & MONTENEGRO 0428. Maria MOŢ, Concerning on Metabolic Profile of Partridges Olimpia COLIBAR, “Perdix Perdix” In Captivity in Western Part Auruţa DÎRLEA, of Romania – Abstract Aurel DARAU – ROMANIA 0429. Irén FEHÉR NAGY Hungarian Model of Self-Sustaining Rural - HUNGARY Homesteads – Abstract 0430. Márta NÓTÁRI Marketing Analysis of Some Hungarikum- - HUNGARY Vegetables in Hungary – Abstract 0431. Márta NÓTÁRI The Situation and the Recommended Marketing Strategy of the Apricot of - HUNGARY Kecskemét in Hungary – Abstract 0432. Edina LENDVAI - HUNGARY Competitiveness of the Poultry Branch 18 ISIRR 2003. Section IV. Hunedoara, Romania, 2003 SYNTHESYS AND ANTIMICROBIAL ACTIVITY OF COPPER(II), COBALT(II) AND NICKEL(II) COMPLEXES WITH 2-AMINOBENZIMIDAZOLE Sanja O.PODUNAVAC-KUZMANOVIĆ1, Ljiljana VOJINOVIĆ2, Dragoljub M. CVETKOVIĆ1 1Faculty of Technology, Bul. Cara Lazara 1, Novi Sad, Serbia and Montenegro 2Faculty of Sciences, Trg Dositeja Obradovića ,3 Novi Sad, Serbia and Montenegro Abstract: The preparation and properties of some copper(II), cobalt(II) and nickel(II) complexes with 2-aminobenzimidazole (L) are reported. The synthesized complexes are of the general formula: [ML2Cl2]·nH2O; M=Cu, Co or Ni; n=0 or 2). The complexes were characterized by elemental analysis (metal), molar conductivity, magnetic susceptibility measurements and IR spectra. The antimicrobial activity of the benzimidazoles and their complexes were evaluated against Pseudomonas aeruginosa, Staphylococcus aureus, Bacillus sp. and Saccharomyces cerevisiae. It is found that some complexes have shown higher antimicrobial activity than ligand. Keywords: benzimidazole, complexes, copper(II), cobalt(II), nickel(II), antimicrobial. 1. INTRODUCTION A wide variety of benzimidazole derivatives have been described for their chemotherapeutic importance. These compounds have shown biological activity against parasites and bacteria. Also, some of them are known to possess antibacterial, antiviral, antiinflammatory, antihypertensive, arteriosclerosis and fungicidal properties. Various benzimidazoles are effective inhibitors of the growth of lactobacilli, vaccinia virus, influenza virus and HIV-virus [2-6,8-12]. In our previous studies [8-11], we also observed that benzimidazole derivatives, as well as their complexes with transition metal ions, have shown considerable biological activity. Following our synthesis and antibacterial works on benzimidazole derivatives and theirs complexes, 297 ISIRR 2003. Section IV. Hunedoara, Romania, 2003 we now report the synthesis, physico-chemical characteristics and antimicrobial activities of copper(II), cobalt(II) and nickel(II) complexes with 2-aminobenzimidazole. 2. EXPERIMENTAL All chemicals used to prepare the complexes were of analytical reagent grade, commercially available from different sources. Synthesis of complexes All the complexes were prepared following the same procedure. 3 A solution of 5mmol MCl2⋅6H2O (M=Cu, Co or Ni) in 20cm of EtOH was added into a solution of 10mmol of the 2-aminobenzimidazole (L) in 20cm3 EtOH. The resulting mixture was boiled under reflux on a water bath for about 2h and then cooled. The complexes were separated from the reaction mixture by filtration, washed with EtOH and dried in vacuo over CaCl2. The yield of the complexes varied in the range 50-55%. Measurement methods Elemental analysis was carried out by standard micromethods. Magnetic susceptibility measurements were made at room temperature using an MSB-MKI magnetic susceptibility balance (Sherwood Scientific Ltd., Cambridge, England). Molar conductivies of freshly prepared 1⋅10-3moldm-3 solutions (DMF) were measured on a Jenway 4010 conductivity meter. Infrared spectra (KBr pellets) were recorded on an Infrared 457 Perkin-Elmer spectrophotometer. Antimicrobial investigations For these investigations the filter paper disc method was applied. Each of the investigated isolates of bacteria were seeded in the tubes with nutrient broth (NB). The seeded NB (1cm3) were homogenized in the tubes with 9cm3 of melted (45oC) nutrient agar (NA). The homogenous suspension was poured into Petri dishes. The discs of filter paper (diameter 5mm) were ranged on cool. After cooling on the formed solid medium, 2⋅10-5dm3 of the investigated compounds were placed with micropipette. After incubation for 24 hours in thermostat at 25-27oC, inhibition (sterile) zone diameters (including disc) were measured and expressed