Victor Anghelescu

9 Questions 8 Answers 0 Followers

Questions related from Victor Anghelescu

What would be the best method for the crystallisation of lysozyme?

And what are the steps?

04 October 2019 7,135 5 View

What is the mechanism that allows antibodies to pass the blood vessel wall and enter the bloodstream?

I want to know about the antibodies capability to pass through tissues, especially blood vessel wall tissue.

23 November 2018 2,282 1 View

What kinds of bacteria can contaminate glycerol?

Just what it says in the title.

06 September 2018 1,567 2 View

How would someone make glycerin suppositories so that they would be solid and clear?

I have tried to make a base with glycerin and gelatin (glycerinated gelatin as a result), but they come out like a jelly, instead of being solid and clear. What am I doing wrong?

24 June 2018 9,600 4 View

What would be the less costly methods for extracting a plante-derived substance out of a solid mixture (powder)?

Asuming I've combined a few substances extracted from plants, in order to make a powder, how do I extract them back from the powder in order to check if they are in proper proportions in the mixture?

26 January 2018 7,038 2 View

Is ethanol enough to extract pure curcumin (I don't have acces to HPLC)?

I want to extract curcumin and, if it's not pure, I won't be able to use the spectrophotometer in order to prove the presence of curcumin in the extract, because the existence of other substances...

19 December 2017 334 9 View

What would be the best method to sterilise seringes made of low density polyethylene?

I need to put in them some gel that is going to be used in stomatology.

09 November 2017 6,036 3 View

Does ethilic alcohol lose effect against bacteria when you go to a concentration greater than 70%?

I want to know if ethilic alcohol of +70% concentration loses its killing effect on bacteria.

30 October 2017 1,854 5 View

Are the tannins in black tea harmful and how much is contained in 5 grams of tea?

I was wondering if tannins in black tea were harmful. I also see a lot of affirmations related to the tannin content of a cup of tea, which make no sense, as the tannin content depends a lot on...

01 January 1970 2,512 4 View