Plant Extracts

Concentrated pharmaceutical preparations of plants obtained by removing active constituents with a suitable solvent, which is evaporated away,... | Contact experts in Plant Extracts to get answers

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Questions related to Plant Extracts

Error in generating Hirshfeld analysis?

I have tried to generate hirshfeld surface for a metal complex using cif file in Crystalexplorer using windows 10. While am trying to generate the surfaces, I receive an error that says "There is...

23 February 2022 7,227 0 View

What is the aim of measuring palpebral fissure length as an ophthalmic diagnostic test?

Greetings! Should we establish a normal reference value of palpebral fissure length in different species?

15 February 2022 1,205 5 View

Solution for retaining bioactive substances on skin for CLEANSING PRODUCTS ?

My team are having an idea to make a cleansing balm combined with some medicinal plants to develop formation for a multifunction cleansing balm, for example we're planning on making the Centella...

11 February 2022 1,805 3 View

What negative control and what blank for protein denaturation protocol?

Good Afternoon, I want to know what is the composition of the negative control used in the anti-inflammatory test by protein denaturation protocol. I found a lot of works but for the majority of...

07 February 2022 9,957 0 View

How to prepare sex hormone standards (estradiol, estrone, testosterone) for mass spectrometry?

Hi, I would like to have a SOP for preparing sex hormone standards, such as estradiol, estrone, and testosterone for mass spectrometry optimisation. 1) Where do you recommend buying the hormones...

28 January 2022 1,656 0 View

How to generate 3D structure of DNA-labelled probe for in silico study?

Hello experts, I used ChemSketch to draw DNA with the presence of probe at the 5' terminal. Later, I convert the Sketch to .sdf and .sdf to .pdb using Discovery Studio. However, when I visualized...

20 January 2022 6,124 4 View

For how many days dry methanol extract dissolved in methanol and kept in refrigerator can be used for activity test?

I was supposed to perform an activity test but due to some reason I could not do the test. I already prepared the required sample conc. of 1mg/ml conc. by using methanol(99%). So if I store the...

21 December 2021 7,726 3 View

The Universe is Expanding?

Through the telescope, Astronomer Edwin P. Hubble first observed the distribution of galaxies in space in 1929. Hubble found that most of the galaxies outside of the local group are receding from...

13 December 2021 3,442 2 View

Does anyone know how to test for multiple compound inhibition of an enzyme?

Does anyone know any simple and inexpensive proof that with the help of a spectrophotometer allows me to evaluate the biological activity of several components of an essential oil on the same...

25 November 2021 5,734 5 View

Going from g/mL to g/100g?

I have a method where I have generated my cal curve from a single standard by varying the injection volume. The standard is prepared by diluting a reference material at around 10mg/mL in MeOH....

17 November 2021 5,878 6 View

What are different protocols to test efficacy of plant extract against Heliothis spp.?

pls suggest protocols of bioassays

12 November 2021 1,516 1 View

Where can I characterize the flavonoid /polyphenol contents of my plant extract by LCMS?

I am a PhD student from Nigeria and am working on nutritional interventions against heavy metal toxicities. I enriched polyphenols from some plant extracts and i wish to characterize the...

04 November 2021 5,191 13 View

Which one is better between FTIR and GCMS for determination of constituents of plant extracts?

I am working plant extracts

31 October 2021 6,144 6 View

How to calculate: 12.5, 25.0, 45.0, 100.0, 125.0, 150.0, and 200.0 μL/Liter of air of sample(orange oil) in fumigation bioassay?

need to know the concentration calculation for my test

31 October 2021 6,348 3 View

Why the condensed tannin content of the stems is higher than that of the leaves?

I carried out an assay of condensed tannins from extracts of leaves and stems of my plant I found for extracts from ultrasound-assisted extraction that the content of condensed tannins of the...

29 October 2021 3,022 5 View

What is the best method for synthesis of nanoparticles from plant extract?

I would like to synthesis of ZnO and Ago from medicinal plants, I look for the best method for synthesis of nanoparticles

28 October 2021 5,036 4 View

How to activate DEAE-Cellulose 52 to purify the polysaccharides?

I need to purify plant extracted polysaccharides by using DEAE-Cellulose 52, please could anyone provide me the steps of activation.

13 October 2021 6,435 5 View

Isolation of triterpenoids?

Anyone can suggest to me the paper or proper protocol for the isolation of triterpenoids from the plant extracts by the TLC and Column chromatography method? if you have a good impact factor...

10 October 2021 3,986 3 View

Can anyone suggest me a facility for GC-MS with NIST interpretation for an plant extract?

GC-MS with NIST interpretation

29 September 2021 3,178 4 View

How to comment after finding IC50 according to MTT results?

How is the IC50 interpretation made according to the results of the MTT test used to investigate the viability effect of plant extracts on cancer cells?

24 September 2021 7,023 3 View

What is the standard permissible limits for the concentration of Sodium, Potassium and Calcium in soil?

I want to know the concentration benchmark as set by international organizations such WHO, FAO or USEPA for Potassium, Sodium and Calcium so that such can be compared with results gotten from soil...

16 September 2021 4,693 1 View

Crystal formation of succesive extract plant of material in which I have extreact through methanol?

I have extracted plant material first through petroleum ether then Chloroform then Ethyle acetate finaly with methanol in the methanolic extract crystal are form what it indicate what could we the...

09 September 2021 2,229 5 View

Why does a compound show slightly different retention time in different chromatograms of GC-MS ?

We have performed GC-MS analysis of 2 different samples (essential oil and the fraction). Both revealed the presence of some similar compounds in different compositions. However, some compounds...

08 September 2021 8,033 6 View

Hi dear colloquies, Please, how to identify the LD50 for different plant extracts in tissue culture ?

Hi, I want to study the LD50 and cytotoxicity of an alcoholic , water extracts and the oil of plant in tissue culture and which lab animal is the suitable?

05 September 2021 489 2 View

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