Faida Khadidja Idaroussi

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Questions related from Faida Khadidja Idaroussi

How do I prepare a 0.1 mM of DPPH from an already prepared solution of 0.1% DPPH?

I want to assess the radical scavenging activity of plants extracts using the DPPH method. My protocol is stating that I need to prepare 0.1 mM of DPPH in methanol. However I don't have the...

29 March 2022 8,049 5 View

Which solvent can I use to prepare a stock solution og my plant extracts?

I have extracted the plants using ethanol (70%), ethyl acetate and water and dried them as much as possible using. Now I want to know the total phenolic contents of the extracts using the Folin...

10 November 2021 4,314 4 View

How can I dry completely my plant extracts after concentrated it in a rotary evaporator?

I've been extracting using 3 differents solvents which are water, ethanol (70%) and ethyl acetate. After extraction, I've concentrated it using a rotary evaporator (KRvr 65/45 Rotavapor R110)....

08 September 2021 2,128 5 View

What could be used as a negative control instead of DMSO in an antibacterial assay using disc diffusion method?

I'm intending to test the antibacterial activity of 2 medicinal plants from Comoros using disc diffusion assay. I wanted to used DMSO as negative control, however I've been told that it has some...

15 July 2021 5,210 4 View