Souad Djellali

6 Questions 12 Answers 0 Followers

Questions related from Souad Djellali

What are the possibilities of chemical modification of polyaniline and polypyrrole?

Hi, I want to introduce some organic molecules on polyaniline and polypyrrole backbones to make them more soluble in organic solvents. What are the chemical reaction that are possible on these...

04 December 2015 2,474 3 View

Why all publications are using glassy carbon/platinum wire electrodes in tests of cyclic voltammetry of plant extracts?

Hi, I want to perform antioxidant activity of plant extracts by cyclic voltammetry. I find that all publications used glassy carbon as working electrode and platinum wire as auxiliary electrode;...

22 May 2015 8,118 4 View

What are the best antioxidant standards for plant antioxidant activity?

Hi, Could you please tell me what are the commercial antioxidant that generally used as standards to estimate the antioxidant activity of plant extracts. Best regards

19 May 2015 140 19 View

Does ascorbic acid have one or two anodic peaks in cyclic voltammetry?

Hi, I am studying antioxidant activity of my plant extracts by cyclic voltammetry using ascorbic acid as standard. I have encountred a problem with voltammograms of ascorbic acid as I found two...

11 May 2015 6,022 6 View

Why are my methanolic plant extracts not completely soluble in methanol?

Hi, I prepared plant extracts in MeOH /water (80/20) and evaporated both solvents. However, my extracts are not completely soluble either in water or in methanol, Could you please tell me why and...

08 May 2015 9,964 5 View

Could anyone tell me why I have an oily or pasty methanolic extract of my plant?

And how may I remove this oily or pasty phase and get a dry extract? I want to obtain a dry extract, easily handled and weighed, to prepare accurate solutions for anti-microbiogram.

05 June 2014 5,380 3 View