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Emulsion: Definition, Advantages, Disadvantages – Pharmaceutics Notes

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Definition

An emulsion is a thermodynamically unstable system consisting of at least two immiscible liquid phases one of which is dispersed as globules in the other liquid phase stabilized by a third substance called an emulsifying agent

OR

An emulsion is a dispersion in which the dispersed phase is composed of small globules of a liquid distributed throughout a vehicle in which it is immiscible


Advantages and disadvantages of emulsions

Advantages

 Unpalatable oils can be administered in a palatable form.
 Unpalatable oil-soluble drugs can be administered in a palatable form.
 The aqueous phase is easily flavoured.
 The oily sensation is easily removed.
 The rate of absorption is increased.
 It is possible to include two incompatible ingredients, one in each phase of the emulsion.

Disadvantages

 Preparation needs to be shaken well before use.
 A measuring device is needed for administration.
 A degree of technical accuracy is needed to measure a dose.
 Storage conditions may affect stability.
 Bulky, difficult to transport and prone to container breakages.
 Liable to microbial contamination which can lead to cracking.


Biphasic Liquids: Suspension: Definition, advantages, and disadvantages, Classifications, Preparation of suspensions, Flocculated and Deflocculated suspension Emulsions: Definition, Advantages & Disadvantages, Classification, Emulsifying agent, Test for the identification of the type of Emulsion, Methods of preparation, Stability of emulsion


First Year B Pharm Notes, Syllabus, Books, PDF Subjectwise/Topicwise

F Y B Pharm Sem-IS Y B Pharm Sem-II
BP101T Human Anatomy and Physiology I TheoryBP201T Human Anatomy and Physiology II – Theory
BP102T Pharmaceutical Analysis I TheoryBP202T Pharmaceutical Organic Chemistry I Theory
BP103T Pharmaceutics I TheoryBP203T Biochemistry – Theory
BP104T Pharmaceutical Inorganic Chemistry TheoryBP204T Pathophysiology – Theory
BP105T Communication skills TheoryBP205T Computer Applications in Pharmacy Theory
BP106RBT Remedial BiologyBP206T Environmental sciences – Theory
BP106RMT Remedial Mathematics TheoryBP207P Human Anatomy and Physiology II Practical
BP107P Human Anatomy and Physiology PracticalBP208P Pharmaceutical Organic Chemistry I Practical
BP108P Pharmaceutical Analysis I PracticalBP209P Biochemistry Practical
BP109P Pharmaceutics I PracticalBP210P Computer Applications in Pharmacy Practical
BP110P Pharmaceutical Inorganic Chemistry Practical
BP111P Communication skills Practical
BP112RBP Remedial Biology Practical

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B Pharmacy Notes (Subjectwise/Topicwise)

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  • T Y B Pharmacy Notes
  • Final Year B Pharmacy Notes
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D Pharmacy Notes (Subjectwise/Topicwise)

  • 1st Year D Pharmacy
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