Chemiluminescent studies on the antioxidant activity of amino acids.
The effect of various concentrations of essential alpha-amino acids on the luminol-sodium hypochlorite chemiluminescence (CL) has been studied. It was found that all tested compounds have an inhibiting effect. Amino acids with phenolic groups present higher inhibition than basic, acidic or neutral amino acids. The calculated antioxidant activities by the CL method are compared with those of the N,N-diphenyl-picryl hydrazyl (DPPH) method.
Triantis
T M
TM
Institute of Physical Chemistry, NCSR Demokritos, 15310 Ag. Paraskevi, Athens, Greece.
Yannakopoulou
E
E
Nikokavoura
A
A
Dimotikali
D
D
Papadopoulos
K
K
D000596:Amino Acids / Q000737:chemistry*; D024342:Amino Acids, Acidic / Q000737:chemistry; D024361:Amino Acids, Basic / Q000737:chemistry; D021542:Amino Acids, Neutral / Q000737:chemistry; D000975:Antioxidants / Q000737:chemistry*; D001713:Biphenyl Compounds; D007202:Indicators and Reagents; D008163:Luminescent Measurements; D008165:Luminol / Q000737:chemistry; D010084:Oxidation-Reduction; D010636:Phenols / Q000737:chemistry; D010851:Picrates / Q000737:chemistry; D012973:Sodium Hypochlorite / Q000737:chemistry; D013329:Structure-Activity Relationship
D000596:Amino Acids; D024342:Amino Acids, Acidic; D024361:Amino Acids, Basic; D021542:Amino Acids, Neutral; D000975:Antioxidants; D001713:Biphenyl Compounds; D007202:Indicators and Reagents; D010636:Phenols; D010851:Picrates; D008165:Luminol; C004931:1,1-diphenyl-2-picrylhydrazyl; D012973:Sodium Hypochlorite