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

How to take UV or Fluorescence spectra of a dispersion (Non-soluble solids) such as silica or graphene oxide etc??

Can anyone please help to suggest if I want to take spectroscopic (uv or Fluorescence spectra ) of non-soluble powdered solids such as silica, charcoal or graphene oxide? please provide...

19 October 2023 3,317 4 View

Mechanism of crystal staining?

Where does the crystal violet bind to when added to live and dead cells? Which part of the live cells they bind to?

10 October 2023 5,547 0 View

Cultural characteristics of Streptococcus mutans?

Could someone please provide me with a formula for preparing a culture medium to isolate Streptococcus mutans, other than BHI or MS? Thank you

10 October 2023 7,591 0 View

What statistical approach is used for paired sample study design in MetaboAnalyst?

For unpaired sample test, t-test or ANOVA is used to compare differences between groups. What statistical approach is used for paired samples in MetaboAnalyst?

16 September 2023 8,543 1 View

Could someone please help me with understanding the result analysis of this t-test?

Greetings to all research enthusiasts present here, I need a small help in data interpretation of my research. In my survey, I have incorporated the following question to ask a few employees -...

08 September 2023 8,228 3 View

In modern shunt system what is a typical distal catheter length within the peritoneal cavity?

In the 2010 era, it was typical to provide distal catheter lengths that were 2 to 3 times the height of the cavity to allow it to slide and bend away from obstructions. The force necessary to stop...

03 September 2023 9,993 0 View

What is the format for research paper ?

28 August 2023 348 3 View

What is the Science behind rabbit urine being used to control fall armyworm?

What science is behind rabbit urine controlling the fall armyworm pest when it is sprayed on them. Could it be having some bioactive compounds with pesticidal activity. and how good is the rabbits...

16 August 2023 5,545 0 View

How to calculate concentration using external standard (GC FID)?

I sampled the headspace of my incubation gas, and target the CH4 compound. How do I determine its concentration in unit of "umol g dw soil^-1" ? I have plotted the calibration curve and obtained...

11 August 2023 4,503 1 View

Hello, my question is that; what happens when we shine different light beam of different wavelength on the same nanoparticle at the same time?

It is known that plasmon resonance effect is seen when a light of wavelength greater than the size of the nanoparticle is shined upon. However, what would happen when different light of...

09 August 2023 4,744 2 View

Getting unwanted base pair deletions during bacterial growth phase of molecular cloning- what can I try to avoid this?

Unwanted base pair insertions/detetions! This is an age old story with this cloning journey for one particular plasmid ~15kB with a CMV promotor. I get unique base single base pair...

07 August 2023 559 7 View

Is it necessary to consider the viscosity of a 0.9% pectin solution when measuring the particle size, in the setaziser?

I took into account the viscosity of the water at 25°C (0.89 cP)

26 July 2023 7,201 1 View

What should be the pore size of silica gel sheet for carrying out TLC on plant extract ?

I have to carry TLC to identify compounds in plant extract

26 July 2023 1,349 2 View

How can I calculate the amount of polyphenol content?

the volume in the equation refer to the volume of extract needed for the assay (0.1ml) or is it the volume total of my extract (5ml)? also, the concentration of my extract is 50mg/ml so I make a...

22 July 2023 5,415 1 View

How do the good dispersion of the nano-fillers within a polymer and the strong interfacial bonding increase the viscosity of the nanocomposite?

I would like to know how the well-dispersed nanoparticles within a polymer would increase the viscosity of the resulting product (i.e., the polymer nanocomposite)?

20 July 2023 6,780 3 View

I had stock solution with concentration 10 mg/ml and i took 25 ul of solution to 975 ul water ..how can i calculate the new concentration ?

i had stock solution with concentration 10 mg/ml and i took 25 ul of solution to 975 ul water ..how can i calculate the new concentration ?

13 July 2023 1,199 3 View

How to interpret IndVal value?

Hello, could someone help on how to interpret an IndVal value? I have run an Indicator Species Test in PAST (I have no Primer and R doesn't take missing values, I was only able to run my data in...

11 July 2023 6,322 1 View

How could i maintain the dispersion of magnesium oxide nano and zinc oxide nano?

magnesium oxide nano and zinc oxide nano in distilled water and then i used sonication to disperse them in the solvent

02 July 2023 6,556 3 View

Docking analysis of compds from gcms shows that FFA & waxes have high binding affinity 4 protein target - can this translate to in-vitro inhibition?

If docking shows that long chain hydrocarbons have high binding affinity for a particular target protein, can this really mean that the long chain HCs will have potent inhibition in-vitro or have...

01 July 2023 239 2 View

DPPH assay and ascorbic acid standard curve?

Hi. Last week I ran the analysis of ascorbic acid samples with concentrations of 2, 4, 6, 8, and 10 mg/ml that are dissolved in methanol. Every 3 mL of this sample was mixed with 1 mL of DPPH (0.1...

30 June 2023 9,388 6 View

Abaqus. How do I make a set of cells using .getCells() on face object?

Hi I am trying to make a set of cells that are associated to one or more faces and save them in a set using python scripting for Abaqus CAE, but I cannot make it work. I have created and example...

23 June 2023 9,516 1 View

How to prepare wijs solution(iodine monochloride soluton) for the determination of unsaturation in oil?

I'm performing iodine value test to find the unsaturation present in the oil. but I am facing problem at the endpoint is colorless. I'm not getting what is wrong with the wijs solution that I'm...

22 June 2023 2,804 0 View

What the reason PCR identification E.coli using usp A gene?

What makes usp A (universal stress protein) gene considered valid for molecular identification of Escherichia coli bacteria (used as PCR Primer)? Why use usp A while there are several groups of...

19 June 2023 3,991 2 View

How to dissolve polysulfone in chloroform?

Polysulfone having molecular weight 35,000 g/mol

17 June 2023 5,406 6 View

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