scholarly journals Flow Injection Determination of Xanthine Oxidase Inhibitory Activity and Its Application to Food Samples

2006 ◽  
Vol 22 (1) ◽  
pp. 105-109 ◽  
Author(s):  
Le Hoang LAM ◽  
Ken SAKAGUCHI ◽  
Hiroyuki UKEDA ◽  
Masayoshi SAWAMURA
Keyword(s):  
Xanthine Oxidase ◽  
Flow Injection ◽  
Inhibitory Activity ◽  
Food Samples

scholarly journals Antioxidant activity, xanthine oxidase inhibitory activity, and compounds determination of Cipadessa baccifera leaf extract

2021 ◽  
Author(s):  
Syarifah Ramadhani Lubis ◽  
Subandi Subandi ◽  
Muntholib Muntholib ◽  
Jamilah Abbas ◽  
Tjandrawati Mozef
Keyword(s):  
Antioxidant Activity ◽  
Xanthine Oxidase ◽  
Inhibitory Activity ◽  
Leaf Extract

Semiautomatic Determination of Furanic Aldehydes in Food and Pharmaceutical Samples by a Stopped-Flow Injection Analysis Method

1993 ◽  
Vol 76 (6) ◽  
pp. 1255-1261 ◽  
Author(s):  
A Espinosa-Mansilla ◽  
A Muñoz Dela Peña ◽  
F Salinas
Keyword(s):  
Flow Injection ◽  
Flow Injection Analysis ◽  
Pharmaceutical Preparations ◽  
Thiobarbituric Acid ◽  
Food Samples ◽  
Analytical Determination ◽  
Stopped Flow ◽  
Analysis Method ◽  
Analysis Technique

Abstract A kinetic study of the reactions of 5-hydroxymethyl-2-furfuraldehyde and furfural with 2-thiobarbituric acid (TBA) by a stopped-flow flow injection analysis technique has been undertaken. A semiautomatic method for the analytical determination of these furanic aldehydes is proposed on the basis of reaction with TBA. The proposed stopped-flow method was successfully applied to several commercial pharmaceutical preparations and food samples. The procedure is faster than the earlier procedure for determination of these compounds in foods and pharmaceuticals.

Determination of myo-inositol phosphates in food samples by flow injection-capillary zone electrophoresis

2003 ◽  
Vol 24 (1213) ◽  
pp. 2092-2098 ◽  
Author(s):  
Bartolomé M. Simonet ◽  
Angel Ríos ◽  
Félix Grases ◽  
Miguel Valcárcel
Keyword(s):  
Capillary Zone Electrophoresis ◽  
Flow Injection ◽  
Inositol Phosphates ◽  
Food Samples ◽  
Zone Electrophoresis ◽  
Capillary Zone

Voltametric and Flow Injection Determination of Oxytetracycline Residues in Food Samples Using Carbon Fiber Microelectrodes

2003 ◽  
Vol 15 (7) ◽  
pp. 601-607 ◽  
Author(s):  
L. Agüí ◽  
A. Guzman ◽  
M. Pedrero ◽  
P. Yáñez-Sedeño ◽  
J. M. Pingarrón
Keyword(s):  
Carbon Fiber ◽  
Flow Injection ◽  
Food Samples ◽  
Carbon Fiber Microelectrodes

Flow injection-chemiluminescent assay for the determination of superoxide dismutase activity

2001 ◽  
Vol 79 (3) ◽  
pp. 337-341
Author(s):  
Hong Yeob Choi ◽  
Jin Hyang Song ◽  
Yong Sung Park ◽  
Gabriel Lord ◽  
Dong Ki Park
Keyword(s):  
Superoxide Dismutase ◽  
Xanthine Oxidase ◽  
Flow Injection ◽  
Mobile Phase ◽  
Potassium Phosphate ◽  
Optimum Conditions ◽  
Potassium Phosphate Buffer ◽  
Sod Activity ◽  
Relative Standard

Superoxide dismutase (SOD) activity was measured using a flow injection-chemiluminescent assay (FI-CLA) based on xanthine–xanthine oxidase dependent superoxide (O2.–) formation. The mobile phase consists of 50 mM potassium phosphate buffer (pH 7.4) containing lucigenin (5 µM) and xanthine (0.3 mM). Under optimum conditions, bovine albumin did not affect chemiluminescence at concentrations of 1–1000 µg mL–1 and KCN inhibited 100% of the Cu, Zn-SOD activity using 5 µL of a 0.23 mM concentration. The analysis of one sample was done in less than 30 s with a relative standard deviation of ±3.1%. SOD activity in the biological samples was correlated to the amount of exogenously applied SOD. The FI-CLA method reported here appears to be one of the faster and more useful tools used to assay SOD activity.Key words: superoxide dismutase, flow injection-chemiluminescent assay, superoxide, xanthine oxidase, lucigenin.

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