Rezumat articol ediţie STUDIA UNIVERSITATIS BABEŞ-BOLYAI

În partea de jos este prezentat rezumatul articolului selectat. Pentru revenire la cuprinsul ediţiei din care face parte acest articol, se accesează linkul din titlu. Pentru vizualizarea tuturor articolelor din arhivă la care este autor/coautor unul din autorii de mai jos, se accesează linkul din numele autorului.

 
       
         
    STUDIA CHEMIA - Ediţia nr.1 din 2016  
         
  Articol:   GC-MS METHODS FOR AMINO ACIDS DETERMINATION IN DIFFERENT BIOLOGICAL EXTRACTS.

Autori:  MONICA CULEA, CORNELIA MESAROS.
 
       
         
  Rezumat:   Sensitive, precise and accurate analytical methods for free amino acids determination in biological samples were developed. Purification by ion exchange technique was followed by two steps derivatization method to obtain trifluoroacetyl ester derivatives. GC/MS analysis was performed by using scan or SIM mode. Known amounts of internal standard, the isotopic labelled analogue of glycine, methionine or isoleucine were added to the sample, before extraction, for the quantitative analysis, followed by matrix and regression curves calculation. The methods were validated using amino acid standard samples. Analyses of dairy, corn grain, fish plasma and meat are presented. Also a trace level (picogram) analysis method of blood spots, for diagnosis of inborn errors of metabolism, is described.

Keywords: amino acids, GC-MS, isotopic dilution, blood
 
         
     
         
         
      Revenire la pagina precedentă