Hello Dear Scientists? Phytochemicals VS Synthetic Chemials? Which one better and Why?

Dear I am working on obesity and writing a review article. I want to add the topic that Why Natural products (Phytochemicals) are more beneficial than synthetic ones? I know that they have less...

02 March 2019 693 2 View

Does filteration effects the crude extracts activity?

Dear Scientists, I applied the pure crude extracts (without filtration by syringe filter) on colon cancer cell lines and got some good results. When I repeated the experiment with filtration by...

10 November 2017 6,844 0 View

No title

I have done the extraction with 90% Aqueous Ethanol of 25 gms of the sample and then filtered and then evaporated the solvent. After this, I did Lypholizations and after lyophilization, I got 0.5,...

06 July 2017 6,745 0 View

Total Triterpenoid determination.?

04 May 2017 3,628 3 View

Request for articles

hello all, Can any one suggest or send specific articles for quantitative analysis of Triterpenoids (Taraxasterol), by using C18 Column in HPLC-ELSD method ?

02 March 2017 6,830 0 View

Request for Article for (Triterpenoids) taraxasterol and its actate HPLC analysis??

hello every one. Can anyone send an article in which method of gradient elution for triterpenoids like taraxasterol and its acetate has been analysed by HPLC by using different gradient...

02 March 2017 9,122 3 View

Important Question

Dear Scientists, I am confused now. I did extraction from plant with 90 percent ethanol at 40 degree centigrade in reflux condensor, then i evaporated the ethanol in evaporator and also in vaccum...

01 February 2017 1,921 3 View

Important questions request about HPLC

For HPLC analysis of Phenols and Triterpenoids, what concentration of standards and samples solutions (In mg/ml or microgram /ml) for injection into HPLC should be used? I just want to know about...

01 February 2017 5,382 4 View

Hello to all scientists. ?

Can any one provide me some good articles for the determination of Triterpenoids by HPLC-ELSD methodology?

31 December 2016 284 0 View

Hello dear Scientists. How every one doing?

06 July 2016 4,420 1 View

What is the status of bread making and more bakery foods with the use of insect flour/powder?

Insects have been consumed by human diet since prehistoric times. At present, the idea of looking at insects as food has been getting traction worldwide, also in response to increasing food...

03 March 2021 6,223 5 View

Is There Any Feasible Method To Test Fluorescent Compounds Other Than Fluorescence Spectrometers ??

Is There Any Feasible Method To Test The Efficiency Of Fluorescent Compounds Other Than UV Spectrometers ? Suggestions Would Be Appreciated !

02 March 2021 5,785 3 View

How to grow E.coli on the low salt LB agar plate with 50 or 100ug/ml of Blasticidin?

Hello, I would like to ask how to grow E.coli which resists 50 or 100ug/ml of Blasticidin. I have tried many methods by using low salt Luria-Bertain(LB) agar plate. However, no colonies grow. Let...

01 March 2021 2,027 2 View

Have anyone checked before Cyclic voltammograms of intial ITO substrate and E-teck?

As a beginner in electrochemistry, I tried to obtain cyclic voltamograms of commercial anatase powder deposited on an ITO substrate or on Eteck. After several attempts, I noticed that my cyclic...

23 February 2021 3,175 3 View

How to reduce static electricity of powder after lyophilization?

I am working on synthesizing and then purifying peptides using the SPPS system. After purification of the peptide, the peptide powder is obtained using a freeze dryer. When measuring the powder,...

22 February 2021 10,099 5 View

What kind of steel moulds are used for hot pressing metal powders?

My main concern is that the metal powders should not weld to the mold surface and I should easily be able to eject out the pressed samples. I am looking for alternative for graphite moulds. The...

22 February 2021 2,965 4 View

How to Study a proton NMR of Graphene prepared by Electrochemical Exfoliation technique?

I performed a Proton NMR of graphene powder prepared by electrochemical exfoliation technique. It shows some peaks. But I can't understand it.

21 February 2021 8,947 3 View

Are ZnS nanoparticles moisture sensitive?

Hello Everyone, I tried to form ZnS nanoparticles using the hot injection method and was able to form the same (confirmed by XRD). When I centrifuged, after the reaction I got a kind of white...

17 February 2021 1,709 3 View

How to dissolve lyophilized silk fibroin?

Dear members of the community, I am trying to concentrate silk fibroin to 25 % (w/v). Nevertheless, i am struggling with the concentration step. I successfully achieve concentrations of 5-6 % of...

16 February 2021 1,808 1 View

How does a freeze dryer destruct your solid sample?

Several times I lost my sample during freeze drying. There was no solid or powder in the vial after freeze drying. I'm sure sample contained solute because i took its NMR spectrum. I covered the...

15 February 2021 6,749 2 View