Sudheer Kumar

9 Questions 8 Answers 0 Followers

Questions related from Sudheer Kumar

How to interpret the LC-MS data manually?

To identify the phytochemicals, present in the LC-MS data of a plant extract, what are the step wise procedure to be followed.

31 March 2023 7,422 1 View

What are the simple invitro models for basic pharmacological evaluation of plant extracts?

if we have a plant material with no literature on its pharmacology, what are the basic pharmacological screenings we can perform with limited equipments?

21 March 2017 2,745 4 View

How can I separate the steroid from the other compounds in a hexane fraction of an extract?

I am trying to seperate and purify a steroid but I could not succeed through silica gel column. one more unknown compound (black spot on charring with anisaldehyde sulphuric acid reagent)also...

04 August 2015 8,144 6 View

What type of chemical constituents can we expect from root and bark from the Spp. of Boraginaceae family?

I am planning to isolate phytochemicals from the root and bark extract of plants belonging to boraginaceae family so, please tell me what type of phytoconstituents I can expect.?

26 September 2014 4,842 7 View

Why is the surface of some non-aquatic plant leaves hydrophobic?

Is there any relation (chemically) with the bioactive-constituents present in that particular plant, irrespective of their water loss etc.?

28 July 2013 1,389 4 View

What information can we get by applying Iodine vapors to the TLC plate of a plant extract ?

By observing the colour change.

23 November 2012 9,030 14 View

Perl script for calculating phi and psi angles in pdb file based on co-ordinates

Can anyone give script for pdb parsing and also calculation of phi and psi angles of all the atom record types in one pdb file and display the output in the web browser.

22 November 2012 2,433 3 View

How to isolate the compounds from a plant extract through a column if their polarity is very close ?

I want to extract flavanoids from a plant extract (butanolic), but in the TLC analysis (EtoAc:MeOH:water-8:1.1:1) it is showing many spots. I repeated the column with that particular fraction...

06 November 2012 6,585 46 View

How to overcome the formation of fungus on aqueous plant extract solutions?

05 October 2012 874 10 View