Ioanna Vlachou

6 Questions 11 Answers 0 Followers

Questions related from Ioanna Vlachou

Yeast fermentation medium recipe??

Can anyone please explain what is a fermentaion medium and a yeast suspension and how to make them? I have attached the paper that these two are mentioned and I have highlighted them in the...

01 January 2018 9,656 3 View

What could be the cause of up-shifted msd signal and how can I restore the signal right back to zero baseline?

After injection of a sample directly in MS single quadropole the ''baseline'' of MSD signal up-sifted (approximately to 4000000 Abu). Why and what do you recommend me to do in order to fix this...

10 October 2015 8,434 8 View

What kind of compounds are visible with a UV lamp at 365nm wavelength?

I use this uv lamp: Handheld UV Lamp, LW/SW, 6W, UVGL-58 (254nm, 365nm) fro monitoring TLC plates with F 254. I have a solution of a compound that I thought it was pure and when I run a TLC with...

06 June 2015 2,104 9 View

How can I perform recrystallization of a solid mixture?

I have performed a reaction in DMSO and I removed it with lyophillization. I want to find a suitable solvent to recrystallize my compound, which is as I predicted mid-polar, but I'm afraid some of...

11 November 2014 2,133 8 View

Is there any way I can verify that I have 2 isomers using TLC (Thin Layer Chromatography)?

I have a mixture of 2 products and I want to know if there is a quick way (maybe with TLC?) of knowing that these two are isomers.

07 July 2014 2,064 19 View

How can I dissolve solid mixture which contains my compound but only dissolves in DMSO?

Purification of insoluble solid mixture. I cannot dissolve the solid mixture which also contains my compound. It only dissolves in DMSO. Any ideas?

05 May 2014 6,737 4 View