Multiple Emulsions: Emphasizing on Industrial Applications

Multiple emulsions generally consist of three phases. They can be O/W/O and W/O/W types of multiple emulsions. Multiple emulsions are prepared by incorporating preformulated macroemulsion (i.e., either O/W or W/O emulsions) into the respective aqueous or oil phase as required with the help of sufficient and appropriate emulsifier. For example, O/W and W/O emulsions are incorporated in oil phase and aqueous phase, respectively. Multiple emulsions are preferred over macroemulsions due to the sustained release mechanism of multiple emulsions that helps in the prolongation of drug release or slow release of drug which further delays/prolongs the drug stay in the body for therapeutic action. Demands for multiple emulsions are increasing as they can also be used as red blood cell substitute, oxygen substitute, bioavailability enhancer, etc. Multiple emulsions are eligible to target bioactivity, and they can also be used in drug overdose treatment. Multiple emulsions have a tendency to enhance the drug absorption in the gastrointestinal tract (GIT) when administered orally. They act as local immunosuppressant as they can reduce the immune system’s activity. Targeted delivery of peptides and proteins can be achieved by using multiple emulsions because they can easily encapsulate peptide or proteins within the innermost layer. Multiple emulsions play a vital role in cosmetics as well as in health-care products; there are various cosmeceutical products available in the market such as moisturizer, sunscreen lotion, cleanser, antiperspirant, shaving cream, etc. for their moisturizing capability, protective nature, cleansing ability, sun protection, etc.

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References

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Authors and Affiliations

  1. Amity Institute of Pharmacy, Amity University Uttar Pradesh, Noida, India Pratishtha & Swati Gupta
  2. SGT College of Pharmacy, SGT University, Gurugram, India Manish Kumar Gupta
  1. Pratishtha