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Articles by Laura STAN
Total Records ( 4 ) for Laura STAN
  Daniel DEZMIREAN , Liviu Al. MARGHITAS , Otilia BOBIS , Laura STAN , Victoriţa BONTA , Ovidiu MAGHEAR , Georgeta DINITA and Olimpia MORAR
  Romanian Calluna vulgaris honey that came from Cluj and Salaj County, the most important Calluna areas in Romania was evaluated for authenticity by pollen-analysis, several physical-chemical analyses, including sugar profile and mineral content. Physical-chemical and mineral content analyses show clearly that the samples taken for analysis were pure Calluna vulgaris honeys. This type of honey was found to have the highest potassium content from all the honeys in Romania that were analyzed in our laboratory. Statistical data were processed in order to develop a biochemical profile of this type of honey.
  Liviu Al. MARGHITAS , Cristian COROIAN , Daniel DEZMIREAN , Laura STAN and Emilia FURDUI
  Honeybees from 21 locations from Moldova (Romania) were analyzed in order to study phylo-geographic distribution of Apis melllifera subspecies. The fragment of interest was tRNAleu-cox2 intergenic region. More than a half of the samples belongs to C12 haplotype, identical with C2d from Apis mellifera macedonica and Apis melllifera carnica. The second group has the same similarity on 94% of the fragment with Apis mellifera carnica C2c haplotype. There are two haplotypes, which can be associated with different subspecies of Apis melllifera included in C lineage. We discovered also two new haplotypes, C25 and C26 (GenBank acccession numbers: HQ215207, respectivelly HQ215208). One more conclusion has that Carpathian Mountains has not a natural obstacle in honeybees spreading during its natural adaptation process.
  Daniel S. DEZMIREAN , Liviu Al. MARGHITAS , Otilia BOBIS , Helge SCHLUNS , Cristian AURORI , Cristian COROIAN , Ellen SCHLUNS , Emilia FURDUI , Bogdan GHERMAN , Lavinia BARNUTIU , Cristina MIHAI , Ovidiu MAGHEAR , Laura STAN and Robin MORITZ
  The main objective of the project RoBeeTech is to create a high competence level scientific center of bee biotechnology in Romania. The research directions of RoBeeTech are similar to actual research interests of international teams in the field of bee pathology, bee products quality or the genetic variability analysis of bees through modern biotechnologies. The three main research directions involve the two research labs from USAMV Cluj-Napoca -APHIS (Laboratory for Quality Control of Bee Products) and DIA (Laboratory for Bee Disease Diagnosis). The objectives of RoBeeTech are focused on identification of genetic variability of bee colonies from Romania, the study of bee-parasite-pesticide interaction and new control and treatment techniques based on biologically active effect of bee products and secondary metabolites from plants. Until now bee samples from over 80% of the country were collected, two progress reports and two repayment documents were already delivered and 4 articles were published at international and national conferences.
  Laura STAN , Liviu Al. MARGHITAS and Daniel S. DEZMIREAN
  Propolis samples were analyzed in order to determine the effect of collection method over the general quality of this bee product. In this respect, during 2010-2011 were collected 12 propolis samples using a propolis collector and 12 samples using the hive tool. Propolis samples were prepared as Ethanolic extracts (1%, w/v) and analyzed for phenolics composition (total phenolics, flavones/flavonols, flavanones/dihydroflavonols). Wax content was also determined by Soxhlet extraction. The results obtained proved that collection method has great influence over both wax content and quantity of phenolic compounds from propolis. In conclusion propolis gathered by means of a collector has lower amount of wax and higher amount of phenolics than propolis gathered by hive tools.
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