Dry gum method of making an emulsion

Add 4 parts volume of oil 2 parts of water 1 part of gum. Methods of emulsion preparation.

You can add all parts at once mixing vigorously until a thick emulsion is formed.

Dry gum method of making an emulsion. Dry gum method in emulsion formulation of emulsion coarse dispersion physical pharmaceutics. Continental Dry Gum or 421 Method. The continental method is used to prepare the initial or primary emulsion from oil water and a hydrocolloid or gum type emulsifier usually acacia.

The primary emulsion or emulsion nucleus is formed from 4 parts oil 2 parts water and 1 part emulsifier. The 4 parts oil and 1 part emulsifier represent their total amounts for the final emulsion. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy Safety How YouTube works Test new features Press Copyright Contact us Creators.

In this video we had discussed about Preparation of Emulsions1. Bottle MethodThis video will help DPharm BPharm GPAT a. Methods of emulsion preparation.

There are two methods of preparing a primary emulsion. Emulsifier acacia is mixed with oil before water addition. The quantities of oil water and gum for primary emulsion are calculated.

The acacia and the oil are placed in a dry porcelain mortar. The methods commonly used to prepare emulsions can be divided into two categories A Trituration Method This method consists of dry gum method and wet gum method. Dry Gum Method In this method the oil is first triturated with gum with a little amount of water to form the primary emulsion.

The trituration is continued till a characteristic clicking sound is heard and a thick white cream is. Gum method and the bottle or Forbes bottle method. Continental or dry gum method.

It also referred to as the 421 method because for every 4 parts by volume of oil 2 parts of water and 1 part of gum are added in preparing the initial or primary emulsion. In this method the acacia or other emulsifier is triturated with oil in dry Wedgwood or porcelain mortar until thoroughly mixed. A mortar with a rough.

The following methods used for preparation on small scale. Dry gum methods- what is mean by primary emulsion 1measure the required quantity of oil in a dry measure and transfer it to a dry morter. 2add a calculated quantity of gum acacia and triturate rapidly to form a uniform mixture.

A primary emulsion is formed by using the entire quantitiy of the oilThe dry gum in a quantity equal to one-fourth of the amount of the oilis dispersed in the oil. Because the consentrations are not extremely critical one may use fluid or dry measure interchanably in determining the amount of emulsifier appropriate. When the gum is dispersed in the oil a volume of water equal to half the volume of oil is.

A good indication that the primary emulsion is ready is intense pain in your triturating arm. The Dry Gum method of primary emulsion formation. The acacia is placed into a large mortar as in the wet gum method.

It is important that the mortar be very dry. And lumps are removed by trituration then all of the liquid paraffin is added at once and triturated. Approximately ten seconds after the paraffin is.

• Dry gum method - Wet gum method - Nascent soap method or Bottle method - Electrical method There are two main steps in the preparation of emulsion dry and wet 1 Preparation of primary emulsion which is thick creamy and stable emulsion. Add 4 parts volume of oil 2 parts of water 1 part of gum. You can add all parts at once mixing vigorously until a thick emulsion is formed.

You can add all parts at once mixing vigorously until a thick emulsion is formed. The dry gum or Continental method requires that you place the acacia in a dry mortar and add the oil. Mix for a very brief time.

Now add the water all at once and mix until the primary emulsion is formed. The wet gum or English method requires that you make a mucilage with the acacia and water. You will add the acacia to the water a little at a time being sure it is completely hydrated.

Now you add the oil a little at. This method is a variation of the dry gum method. One part powdered acacia or other gum is placed in a dry bottle and four parts oil are added.

The bottle is capped and thoroughly shaken. This method is a variation of the dry gum method. One part powdered acacia or other gum is placed in a dry bottle and four parts oil are added.

The bottle is capped and thoroughly shaken. To this the required volume of water is added all at once and the mixture is shaken thoroughly until the primary emulsion forms. It is important to minimize the initial amount of time the gum and oil are mixed.

Preparation by Dry Gum Method Using the dry gum method prepare 50 ml of Mineral Oil Emulsion NF by the formula given in Remingtons. Put in 2 oz.