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Articles by Crina MURESAN
Total Records ( 3 ) for Crina MURESAN
  Crina MURESAN , Maria TOFANA and Cornel LASLO
  Changes induced by different cooking processes in levels of HCH and HCH isomers were investigated.Meat samples were analyzed (pork neck). Samples of raw and cooked (cold smoked, hot smoked and pasteurized, grill, baked and pressure cooked) were analyzed. There were some variations in the concentrations of HCH and HCH isomers before and after preparation. The results of this study show that, in general, cooking processes are a means to reduce the HCH and HCH isomers in fatty foods.
  Sevastita MUSTE , Andruta -Elena CERBU , Crina MURESAN , Simona MAN , Vlad MURESAN , Anamaria BIROU(POP) and Carmen CHIRCU
  The paper presents methods for obtaining table mustard and other three new varieties: rosemary mustard, mint mustard, fennel mustard and also their physico-chemical, microbiological and sensory characterization. After the determinations made, both raw materials and finished product quality parameters obtained are superior to existing assortments. Results of microbiological determinations for all 4 types of mustard studied are within the standards. Scores obtained from sensory analysis was: classic table mustard 4.15 (max. 5 points), followed by fennel mustard - 4.02, rosemary mustard - 3.98 and mint mustard - 3.96.
  Crina MURESAN , Maria TOFANA , Sonia SOCACI , Anamaria POP and Cornel LASLO
  Multiresidue methods, which allow the identification/quantification of residues of different analytes at the same time, are advantageously used for monitoring purposes. The multiresidue analysis of OCPs in fat and meat samples involves several steps, first of all the selective extraction of the residues from the homogenized matrix. This work describes the optimization and validation of a multiresidue GC/MS method for the quantification of 18 OCPs in meat samples. An automated system allowed the extraction of 6 samples simultaneously with small volumes of solvent over a 24-hour period. Prior to the analysis, a rapid simple clean-up procedure by SPE (florisil, C18 cartridge) was carried out.An Shimadzu GC-MS System QP-20101, equipped with Autosampler AOC 5000 (Combi Pal). The chromatographic separation was achieved on a 50 m x 0.32 mm i.d. ZB- 5ms capillary column (Phenomenex, USA) with 0.25 μm film thickness. Both data acquisition and processing were accomplished by software GC-MS . Solution Version 2.3.(Shimadzu Corporation) Performance parameters were determined to optimize the GC-MS method (R2, RSD%, limit of detection) as follows:
• the split ratio of 5:1 was chosen by analysis of standard solutions in <SCAN>;
• the ion has been identified and major reference ions, used for identification and dosage using libraries of NIST 127 and NIST 147 spectra;
• we tried increase susceptibility to MS by implementing a quantitative method for determining <SIM>;
• the detection limit was determined by the analysis of the decreasing concentrations <SIM> using the major ions.
 
 
 
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