19 research outputs found
Detection of L-phenylalanine using molecularly imprinted solid-phase extraction and flow injection electrochemiluminescence
No full textOptimization of an HPLC method for phenylalanine and tyrosine quantization in dried blood spot
No full textSimultaneous measurement of phenylalanine and tyrosine by high performance liquid chromatography (HPLC) with fluorescence detection
No full textSpectrofluorimetric determination of oseltamivir phosphate through derivatization with o
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Folin-Ciocalteu spectrophotometric assay of ascorbic acid in pharmaceutical tablets and orange juice with pH adjustment and pre-extraction of lanthanum(III)-flavonoid complexes
No full textBACKGROUND: This study proposes modifications to the conventional Folin-Ciocalteu (FC) spectrophotometric method for individually determining ascorbic acid (AA) in complex matrices in the presence of other phenolics and potential interferents. The conventional FC assay in the aqueous phase, which normally measures total water-soluble phenolics and other antioxidants, has recently been modified by incorporating isobutanol (iso-BuOH) in the solvent mixture for the simultaneous determination of lipophilic and hydrophilic antioxidants in foods
A complex imprinted polymer membrane combined with solid phase fluorescence detection for selective analysis of l-phenylalanine in water-abundant samples
No full textSimultaneous determination of aromatic amino acids in human blood plasma by capillary electrophoresis with UV-absorption detection
No full textRapid, sensitive and simultaneous determination of ascorbic and uric acids in human plasma by ion-exclusion HPLC-UV
No full textA fast high performance liquid chromatographic (HPLC) analysis of amino acid phenylketonuria disorder in dried blood spots and serum samples, employing C18 monolithic silica columns and photo diode array detection
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