MACERATION AND PERCOLATION PDF

The key difference between maceration and percolation is that the maceration is the process of soaking or steeping something to make it soft. Various Methods of Extraction • Maceration • Percolation • Infusion • Decoction • Digestion; 9. Purposes of Extraction • The sole purpose of. Read 1 answer by scientists to the question asked by Mustafa Saddam on Dec 4,

Author: Malahn Dacage
Country: Thailand
Language: English (Spanish)
Genre: Spiritual
Published (Last): 1 January 2016
Pages: 182
PDF File Size: 15.40 Mb
ePub File Size: 5.94 Mb
ISBN: 876-6-90418-447-3
Downloads: 8651
Price: Free* [*Free Regsitration Required]
Uploader: Faejora

Maceration is a method of softening something while percolation is a method kaceration filtering liquids through a porous material. The process of maceration also helps in freeing the food from coming in contact with bacteria. The active ingredient is atropine. Principles and Equipment used in the following extraction processes: Once material has passed through the boundary layer, mass transfer takes place by bulk movement of the solution, known maceratipn eddy diffusion.

The selection of an extraction process mainly depends on the physical nature of the drug.

Leave a Reply Cancel reply. Since, the drug absorbs solvent and there is a residue of soluble constituents in that solvent, so the drug is subjected to pressure and sometimes under hydraulic pressure.

Volume of menstruum required for first maceration. The marc left is a compact gummy matter.

  LUCY PREBBLE THE EFFECT PDF

Physical character of the drug: Maceration and percolation are two methods of extraction used to take out desired components from a mixture into a liquid medium. The marc can be squeezed out of a fine muslin piece, when the quantity of the drug is very small.

After straining, the marc is pressed in a filter press, hydraulic press or hand press etc. III Anc of constituents: It requires costly instruments which may not be cost effective.

Organized drugs having specific cell structures like roots, stems, leaves, flowers etc. It does not retain the prcolation and hence it is not necessary to press the marc. Then, when the vacuum is released, pressure of the atmosphere forces the solvent into the drug and penetration is facilated considerably.

Dry extract – obtained by completely removing the solvent under reduced pressure. The drug is allowed to stand for few days. Decoction is the process in which the water soluble and heat stable constituents of hard and woody crude drugs are extracted out.

Infusion, Decoction, Expression, Maceration, Percolation

So the solvents should be selected cautiously. The percolationn used for extraction purpose is known as menstruum and residue left after extraction the desired constituents is known as marc. Mostly alcohol incorporates in the maceration of different foods since it helps to soften of foods.

Later the water is filtered.

  KNJIGA ENOHOVA PDF

Difference between infusion and decoction? The mxceration is soaked every day for a month and stored in a cooled, dark place. The crystal will be surrounded by a stationary boundary layer of the solvent, with the bulk of the fluid able to move.

Infusion, Decoction, Expression, Maceration, Percolation

Concentrated compound infusion of chirata and. After packinga piece of filter paper is placed over top of the bed, on which small quantity of washed sand is placed to prevent disturbance of the packed material.

Percolation is a displacement process. Degree in Plant Science, M. Maceration makes substances softer than before they were while percolation makes liquid drain through pores downwards. Consider a crystal of soluble material e. Comparison between extraction method: This concentrated percolationn is mixed with the liquid obtained from the 1st maceration. The infiltrated water heaps through the soil.

Sliced and bruised Coarse and moderately coarse powders Moderately fine powder. More menstruum is added if required, so that a shallow layer of menstruum is maintained over the drug bed. Concentrated Infusion of Quassia. On the other hand, percolation involves filtration through a porous material.