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Articles by LIVIU Al. MARGHTAS
Total Records ( 2 ) for LIVIU Al. MARGHTAS
  Contamination by synthetic chemicals residues reduces the efficacy of honey properties and increases the potential health risk to consumers. For extraction of 37 organophosphorous and organochlorine pesticides from honey was used QuEChERS procedure, a highly competitive chromatographic technique for GC-MS. After the exposure of contaminated honey with pesticides to the UV radiation (λ=254nm), for different periods, a decrease in concentration level in different proportions was found. For 44% of the pesticides, the total degradation was achieved, with a higher incidence for organophosphorus compounds. After maximum irradiation time (72 hours) the others pesticides showed different stabilities, most of them were retrieved in honey in different concentrations. Pesticides residues behavior to UV treatment was similar for the two honey types investigated.
  LIVIU Al. MARGHTAS , Daniel S. DEZMIREAN , Ioan PASCA , Bogdan GHERMAN , Alexandra MATEI and Emilia M. FURDUI
  Fifteen silkworms, Bombyx mori L., seven breeds and eight hybrid combinations were subjected to a comparative study. The silkworms were breaded in specific Transylvanian conditions, being assured the same microclimate and were fed with the same mulberry leaves of Morus alba (Ukraina 107 variety). In this study we analyze some productive parameters in cocoons of Bombyx mori L.: raw and dried cocoon mass (g), longitudinal and transversal axis of raw and dried cocoon (cm), longitudinal/transversal ratio raw and dried cocoon, silk incartment (g), cocoon waste (g), filament length (m). Data obtained after measurements, indicates that hybrid B1 X SVILA2 had the best values for the biological parameters of the raw cocoon, also for the incartment. For the dried cocoon, breeds RG90 and AC29 /T were highlighted. According to the filament length, the best values were obtained for AC29 /T XS8 hybrid.
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