Dear Ajeet

You should mention which type of plant bioactives you want to extract. Let me explain you the choice of an extraction solvent would vary with the nature of biomolecules you are interested in and that of target material (plants). Normally aqueous methanol is considered to be efficient solvent for the recovery of polar biomolecules like phenolics. The researcher can suggest you well the extraction solvent of technqiue if you mention the plant material and biomolecules you are interested in.

Best of Luck

thanks, Muhammad Mushtaq sir 

you can increase the polarity by increasing the water percentage, (MeOH100%, MeOH: H2O 

MeOH100%,  

MeOH: H2O 90: 10

MeOH: H2O 80 : 20

etc..

you have to consider that the extracts with high polarity are more difficult to be purified, you will find a lot of sugars, polysaccharides, pigments etc.. you can select highly polar solvents for the extraction of saponins and other glycosides.

Dear Ajeet,

Since your target is crude I suggest you decide between H2O and methanol. However, you can go serial whereby you use methanol first and then dry up the residue which you will later use for the aqueous for further extraction.

Methanol and water are polar solvents (relative polarity for water: 1, RP for methanol 0.762). If you have only these two solvents, choose water as environment friendly solvent and it gives better yield if your plant material contains more polar compounds. 

To get better phytochemical information and effect from your plant crude extract, I advise to use different solvents with different polarity (each solvent alone with new plant material).

thanks