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(Alam et al., 2008a, Alam et al., 2008b, Saha et al., 2008.), in this ... solution ( 0.004% w/v) was prepared in 95% methanol. .... Aruoma OI and Halliwell B (1987 ).

Antioxidant, DNA protective efficacy and HPLC analysis of Annona ...


Feb 25, 2014 ... 2007; Gunjan et al. ... (1/10 dilution) and 2 ml of 7.5 % Na2CO3 (w/v) solution were added and incubated ..... In: Aruoma OI, Halliwell B, editors.

Development of standardized extractive solution from Lippia ...


Apr 24, 2015 ... The extraction solution was selected through a full factorial design ... the highest content of flavonoids were: 7.5% (w/v) of plant with ethanol 50% (v/v) as solvent. ... the extractive solutions should be evaluated and quantified (Audi et al., ..... compounds (Halliwell, 2008, Rice-Evans et al., 1997, Scalbert et al.,...

Scavenging of hydroxyl radicals but not of peroxynitrite by inhibitors ...


Feb 10, 2009 ... However, a recent study published in this journal (Dikshit et al., 1996) raised ... of ascorbate, Fe<sup>3+</sup>-EDTA and H2O2 essentially as described by Halliwell et al. ... ( 1987); 1 ml each of 1% (w/v) thiobarbituric acid in 50 mM NaOH and of ... Then 100 μl of the tyrosine solution together with 100 μl of compound to .....

Antioxidant properties of species from the Brazilian cerrado by ...


The extracts of S. obovatum and V. phosphorea showed an abundant phenolic ... DNA and carbohydrates (Nohl et al., 2005; Halliwell et al., 1999; Halliwell et al., 1992). ... Ethanolic solutions (2.5 mL) of various concentrations of the extracts in ... Increased absorbance indicates increased reducing power (Meir et al, 1995; ...

Full-Text PDF - MDPI


Feb 4, 2016 ... Liu et al. reported for the first time, the capacity of the bacterium .... solution at the same concentration as to the samples. .... three independent experiments (## p < 0.01 vs. control; * p < 0.05 and ..... described by Halliwell et al.

Antioxidant Activities and Polyphenolic Contents of ... - MDPI.com


Feb 10, 2011 ... published. Öztürk et al. tested various extracts of M. juliana for their antioxidant activity by different assays. ... (50:30:10:10, v/v/v/v) as mobile phase; NST/PEG spray reagent; UV light at 365 nm. Tracks: Mc - .... In this assay, the yellow colour of the test solution changes to ..... as described by Halliwell et a...

eon COOX - American Chemical Society


antioxidant food additives (Stich, 1991; Ito et al., 1985,. 1986; Hudson, 1990 ... ( Halliwell, 1990; Aruoma et al., 1992). ... v/v CCq and 50% v/v isopropyl alcohol in 10 mM KHzPO4- ... (dissolved in minimum potassium hydroxide solution), 0.1 mL.

Using microelectrodes - The University of Texas at Dallas


Glass microelectrodes are usually filled with a salt solution. ... for a complete treatment of the subject (Rall & Shepherd, 1968; Hubbard et al. 1969;.

evaluation of antioxidant, cytotoxic, antibacterial potential a


The solution of methanol DPPH (0.004% w/v) was mixed with serial dilution (0 to ... to the method of Resat (Resat et al., 2004) in this procedure, CuCl2.2H2O solution; .... Halliwell B., J.M.C. Gutteridge, Free Radicals in Biology and Medicine, ...

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Genesis and development of DPPH method of antioxidant assay


Feb 25, 2011 ... On mixing DPPH solution with a substance that can donate a hydrogen .... The modified method introduced of Brand-Williams et al. ... vs. amount of reductant added, for the constant-volume colorimetric titration of DPPH with cysteine hydrochloride<sup>(5)</sup> ..... Halliwell B. Oxidative stress, nutrition and health.

Is there any easy method for the estimation of hydroxyl radical ...


Aug 18, 2014 ... ... FeCl3 (1:1 v/v), 100µl 1.0mM H2O2 and 100 µl 1.0mm ascorbic acid ,was ... Stock solutions of EDTA (1 mM), FeCl3 (10 mM), Ascorbic Acid (1 ... Hydroxyl radical scavenging assay can be performed by Klein et al and Halliwell methods. ... was measured according to the modified method of Halliwell et al.

Radical scavenging and antioxidant activity of tannic acid


Then, the solution which contains 15 μg/mL concentration of tannic acid .... <sup>+</sup> radical scavenging activity was determined according to method of Re et al ..... Fe <sup>2+</sup> ion is the most powerful pro-oxidant among the various species of metal ions ( Halliwell and Gutteridge, 1984). ..... Gülçin, V. Mshvildadze, A. Gepdiremen, R. Elias.