Abhay Mishra

9 Questions 18 Answers 0 Followers

Questions related from Abhay Mishra

Need methods for Formulation and evaluation of anti-aging cream, gel and serum?

Can anybody provide me standard methods for the formulation and evaluation of herbal anti-aging gel, cream and serum with accurate formula? My goal is to develop three (as said above) individual...

04 April 2019 8,043 4 View

Calculation of Sample concentration using AUC in HPLC?

How to calculate sample concentration and percentage by using AUC of sample and AUC of standard? I ran standard and samples at same conditions in HPLC and have good resolution of peaks. Can...

07 July 2018 3,550 0 View

Can anyone working in the chemistry of blue dye obtained from Indigofera or other plant species?

Is anyone working in the chemistry of Indigo blue dye who suggest me the possibilities to get indoxyl glycoside (Indican) from blue indigo dye? I mean i want to do reverse process i.e. conversion...

05 May 2018 3,713 0 View

How i make a relationship between antioxidant activity and total phenol content

Can any body tell me how i correlate antioxidant activity with total phenol and express my results graphically??????????? Is it possible by using Microsoft excel sheet??? If yes can any one guide...

06 June 2015 1,589 1 View

Can anyone suggest how I can crystallize the compounds from pet. ether fractions collected by CC?

I run a column of pet. ether extract and collected 25 fractions from pet.ether: ethyl acetate (80:20) mobile phase. One fraction showed single spot on TLC in same solvent system but difficult to...

05 May 2014 623 10 View

Can any one suggest how to determine the percentage of solvent present in any extract?

I extracted plant material with ethanol for anticonvulsant activity. DMSO is used to dissolve the ethanolic extract. But ethanol itself has CNS stimulant activity. So please suggest a method by...

01 January 2014 1,759 11 View

What happened when excess silica gel is added to the methanol extract before column chromatography?

I have added silica gel in excess amount for column chromatography in methanol extract. Can anyone tell me, can this create any problem during running of column? If yes, what is the solution?

11 November 2013 5,209 7 View

Can I perform LCMS or any other Instumental analysis of a watery eluted fraction which helps in identification of a particular compound?

Is mass spectrum helpful in clearly identification of compound?

03 March 2013 3,191 2 View

How do I crystallize compounds isolated through water extract by preparative tlc and how do I separate dissolved silica gel from water fraction?

Using Preparative tlc. I elute two fractions (Methanolic and Watery) from water extract of tubers of a plant. Both fractions are reddish color but in water fraction there is a small amount of...

03 March 2013 1,385 9 View