ISSN 1313-7735 RESEARCH PEOPLE AND ACTUAL TASKS ON MULTIDISCIPLINARY SCIENCES Proceedings of the Fourth International Conference Publisher Bulgarian National Multidisciplinary Scientific Network of the Professional Society for Research work Volume 2 LOZENEC, BULGARIA 12– 16 JUNE, 2013 RESEARCH PEOPLE AND ACTUAL TASKS ON MULTIDISCIPLINARY SCIENCES Fourth Conference Publisher Bulgarian National Multidisciplinary Scientific Network of the Professional Society for Research Work with the support of Bulgarian National Society of Agricultural Engineers “Engineering and Research for Agriculture” “Angel Kunchev” University of Rousse, Bulgaria National Institute of Research-Development for Machines and Installations Designed to Agriculture and Food Industry, Bucharest, Romania University of Agricultural Sciences and Veterinary Medicine of Banat Timişoara, Faculty of Zootechny and Biotechnology, Romania Society “ECOLOGICA”, Belgrade, Serbia Volume 2 Social and human sciences. Economic sciences. Ecology and Environment protection, Land & Water Use and Environment, Physics, Chemistry, Biology, Computer Systems and Technologies LOZENEC, BULGARIA 12– 16 JUNE, 2013 Organizing Committee Atanasov Atanas, Bulgaria - Editor in Chief Mihailov Nikolay, Bulgaria Vezirov Chavdar, Bulgaria Kehayov Dimitar, Bulgaria Bikic Sinisa, Serbia Vlăduţ Valentin, Romania Dochev Veselin, Bulgaria Bungescu Sorin, Romania Atanasova Polina, Bulgaria Kneževiš Dario, Croatia Biriş Sorin-Ştefan, Romania Sandric Maria, Romania International Scientific Committee Vezirov Chavdar, Bulgaria Banaj Đuro, Croatia Paradjikovic Nada, Croatia Vulkov Lubin, Bulgaria Inoue Keiichi, Japan Vlăduţ Valentin, Romania Martinov Milan, Serbia Popescu Simion, Romania Bilalis Dimitrios, Greece Fröba Norbert, Germany Kehayov Dimitar, Bulgaria Perkoviš Anica, Croatia Zheliazkova Irina, Bulgaria Bungescu Sorin, Romania Kaya Yalcin, Turkey Biriş Sorin-Ştefan, Romania Jovanoviš Larisa, Serbia ISSN 1313-7735 Printed in Bulgaria Printing House “Angel Kunchev” University of Rousse 8, Studentska Street, 7017 Rousse, Bulgaria PREFACE Dear Colleagues! The International Scientific Conference “Research People and Actual Tasks on Multidisciplinary Sciences” is fourth International Conference organized in Bulgaria with basic purpose to create the framework for the presentation, debate and publication of the valuable scientific results obtained by both the young members. United by the idea of Multidisciplinary Sciences, the researchers and faculty will report the results of their research. Thus, the scientists will contribute is to promote exchange of research results, scientific ideas and their practical implementation and development work in the various disciplines. We hope this meeting will initiate new joint research projects, new friendships. We owe special thanks to all participants, and especially to the supporting organizations. Chief Editor Assoc. Prof. Dr. Atanas Atanasov CONTENTS VOLUME 2 Social and human sciences. Economic sciences. Ecology and Environment protection, Land & Water Use and Environment, Physics, Chemistry, Biology, Computer Systems and Technologies 1. STABILIZATION OF L-ASCORBIC ACID WATER SOLUTIONS DURING ITS DETERMINATION BY HORSERADISH PEROXIDASE Vladan Djuriš, Nebojša Deletiš, Slaviša Stojkoviš, Nenad Draškoviš, Suzana Stankoviš…………………………………………………………………………1 2. IRON CONTENT IN PSEUDOGLEYOF WESTERN SERBIA AS DETERMINED BY DIFFERENT EXTRACTION METHODS M. Jelic, J. Milivojevic, G. Dugalic, O. Nikolic, S. Stamenkovic………………………6 3. THE ASSESSMENT OF ANTIOXIDANT CAPACITY OF MEDICINAL HERBS IN LOW PH CONDITIONS D.S. Stef, I. Gergen, T.I. Trasca, A. Rivis, L. Stef, R. Heghedus-Mindru………..….11 4. THE EVALUATION OF FOOD QUALITY BY USING DIFFERENT METHODS D.S. Stef, R. Heghedus-Mindru, L. Stef, G. Heghedus-Mindru, M. Cazacu, G.Bujanca, F. Berbentea………………………………………………………………..16 5. ANGIOTENSIN I CONVERTING ENZYME INHIBITORY ACTIVITY OF PUMPKIN OIL CAKE 12S GLOBULIN HYDROLYSATES Ž. Vaštag, Lj. Popoviš, S. Popoviš, D. Peričin, and V. Krimer-Maleševiš................21 6. THE PLANTLETS ROOTING OF CHILLI PEPPER OBTAINED IN VITRO CULTURE CONDITIONS A. Lazăr, C. Petolescu, G. Velicevici, I. Creţescu, S. Popescu, O.M. Boldura, G.Poşta and V. Berar………………………………………………………………….…26 7. THE SUCROSE INFLUENCE ON CHILLI PEPPERS PLANTLETS GROWING IN THE IN VITRO CULTURE CONDITION A. Lazăr, C. Petolescu, G. Velicevici, I. Creţescu, S. Popescu, O.M. Boldura, G.Poşta and V. Berar………………………………………………………………….…31 8. THE DETERMINATION OF THE OPTIMAL CHLORINE DOSE FOR THE DISINFECTION OF A MICROBIAL CONTAMINATED WASTEWATER V.V. Safta, Viviana-Carmen Ciucă...........................................................................35 9. STUDY ON MEAT QUALITY DEPENDING ON OXIDATIVE STRESS OF THE ANIMALS BEFORE SLAUGHTER Iuliana Manea, Laur Constantin Manea………………………………………………40 10. THE DYNAMIC OF PHENOLS ACCUMULATION AND THE INFLUENCE ON THE ANTIOXIDANT ACTIVITY OF VITIS VINIFERA L. CALLUS CULTURE EXTRACTS R. Mihai, F. Helepciuc, and M. Mitoi……………………………………………………44 11. DETERMINATION OF SOME ANIONS CONCENTRATION IN MINERAL WATERS FROM NORTH REGION OF ROMANIA, BY HIGH PERFORMANCE ION CHROMATOGRAPHY (HPIC) R. C. Heghedűş-Mîndru, G. Heghedűş-Mîndru, P. Negrea, , R.L. Şumălan, T.I. Traşcă, A. Riviş, D.S. Ştef and L.M. Rusnac……………………………………….…50 12. DETERMINATION OF SOME ANIONS CONCENTRATION IN MINERAL WATERS FROM WEST REGION OF ROMANIA, BY HIGH PERFORMANCE ION CHROMATOGRAPHY (HPIC) G. Heghedűş-Mîndru, R.C. Heghedűş-Mîndru, P. Negrea, , R.L. Şumălan, T.I. Traşcă, A. Riviş, D.S. Ştef and L.M. Rusnac…………………………………………..56 13. DETERMINATION OF SOME ANIONS CONCENTRATION IN MINERAL WATERS FROM CENTRE REGION OF ROMANIA, BY HIGH PERFORMANCE ION CHROMATOGRAPHY (HPIC) G. Heghedűş-Mîndru, R.C. Heghedűş-Mîndru, P. Negrea, , R.L. Şumălan, T.I. Traşcă, A. Riviş, D.S. Ştef and L.M. Rusnac………………………………………….62 14. MICROARCHITECTURE OF QUATERNIZED POLYSULFONE/POLY (VINYLIDENE FLUORIDE) BLEND FOR SCAFFOLDS IN TISSUE ENGINEERING L. I. Buruiana, E. Avram, A. Popa, and S. Ioan........................................................67 15. ANTIOXIDANT CAPACITY OF SALVIA OFFICINALIS EXTRACT REGARDING THE SUNFLOWER OIL USED IN FOOD THERMAL APPLICATIONS Nadina Buta, N. Popa, Nicoleta Bordea, Mariana Poiană and T.I. Traşcă..............72 16. IMPROVE PERFORMANCE OF THE POLYSULFONE MEMBRANES INDUCED BY PRESENCE OF POLYVINYL ALCOHOL A. Filimon1, E. Avram1, and S. Ioan1…………………………………………………...77 17. DEVELOPMENT AND ANALYSIS OF A TOPICAL PHARMACEUTICAL PRODUCT CONTAINING RIBES NIGRUM LEAVES EXTRACT L.E. Dutu, .T.D.Balaci, C.E.Gird, L.M. Popescu, I. Dutu……………………………..82 18. PRELIMINARY RESEARCH REGARDING A DERMATO-COSMETIC PRODUCT WITH VEGETAL EXTRACTS USEFUL FOR THE TREATMENT OF HYPERPIGMENTATION C. E. Gîrd, T. D. Balaci, L. E. Duţu, I. Nencu, E. A. Ciocan.....................................88 19. ISOTROPIC AND ANISOTROPIC PHASES IN CELLULOSE LIQUID CRYSTALLINE SOLUTIONS M. Dobos1, M. D. Onofrei1, and S. Ioan1..................................................................95 20. DIELECTRIC PROPERTIES OF NEW POLYSULFONES WITH CHELATING GROUPS R.M. Albu1, E. Avram1, V.E. Musteata1, and S. Ioan1………………………………100 21. EFFECT OF AMMONIUM VANADATE ON VIABILITY AND PROLIFERATION OF CULTURED ANIMAL CELLS Abdulkadir Abudalleh, Pavel Mitrenga, Tanya Zhivkova, Lora Dyakova, Stoyan Shishkov, Radostina Alexandrova……………………………………………..……105 22. THE FORMULATION, PREPARATION AND CHARACTERIZATION OF A COMPRESSED MULTIPARTICULATE SYSTEM Mircea Hîrjău, Dumitru Lupuliasa, Mirela Mitu, Anca Nicoară, Victoria Hîrjău…..111 23. STUDIES CONCERNING THE INCORPORATION OF ORIGANUM L. SYRIACUM ESSENTIAL OIL IN LIQUID AND SOLID FORMULATIONS FOR ORAL CAVITY USE Zeinab Lakis, Teodora Balaci, Cerasela Gird, Ancuţa Fiţa, Andreea Stanescu, Denisa Mihele…………………………………………………………………………..118 24. THE MICROBIOLOGICAL MONITORING OF SOME BATCHES OF MILK ORIGINATED FROM PRIVATE HOUSEHOLDS IN THE WEST PLAIN OF ROMANIA Mişcă Corina Dana, Mişcă C. B., Rinovetz A., Bujancă G., David I., Rădoi P. B., Rinovetz Adina.......................................................................................................124 25. THE MONITORING OF ENZYME ACTIVITY OF GLUCOAMYLASE AND ENDOXYLANASE ON THE BREAD DOUGH David I., Misca Corina, Bujanca G., Rinovetz A., Berbentea F., Georgescu L., Danci M..................................................................................................................129 26. VARIATION OF HEAT TRANSFER AND TEMPERATURE OF TOMATO PASTE AT STERILIZATION AND COOLING PROCESSES G. Bujancă. C. Jianu, A. Rinovetz, F. Crista, I. David, Corina Dana Mişcă, D. Ştef, Antoanela Cozma, Mihaela Cazacu, Zorica Adina Riniovetz……………………..136 27. AMENDING FACTORS OF ANTHOCYANIN DYES IN FRUIT JUICES G. Bujancă, C. Jianu, A. Rinovetz, Corina Dana Mişcă, I. David, B. Rădoi, D. Ştef, Ariana Velciov, Mihaela Cazacu, Adina, Zorica Adina Rinovetz............................142 28. IMPROVEMENT OF PUMPKIN OIL CAKE PROTEIN GELATION PROPERTIES THROUGH ENZYMATIC POLYMERYZATION WITH TRANSGLUTAMINASE Lj. Popoviš, Ž. Vaštag, S. Popoviš, D. Peričin, V. Krimer-Maleševiš.....................148 29. VIABILITY ASSESSMENT OF Ruscus aculeatus L. GERMPLASM EXPOSED TO EXTREME LOW TEMPERATURES Banciu Cristian, Anca Aiftimie-Păunescu…………………………………………...153 30. STUDIES CONCERNING THE VARIABILITY OF SOME BLACK PINE (PINUS NIGRA) POPULATIONS FROM ROMANIA AND GREECE I.Sotiropoulos., E.Madoşă, Oana Danci, and M.Danci……………………………...158 31. AN ASSESSMENT ON THE TROPHIC STATE OF LAKE ŠELIJE, SERBIA S. Širiš, B. Miloševiš, J. Kneževiš and