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Published on: December 27, 2013
[Prepared evening primrose oil microspheres by spray drying]
1College of Pharmacy, Yanbian University, Yanji 133000, China. gjp807@ybu.edu.cn
Summary
This study optimized spray drying parameters for evening primrose oil microspheres. The optimal conditions yielded microspheres meeting demand, with charging rate being the most critical factor.
Area of Science:
- Pharmaceutical Technology
- Materials Science
Context:
- Evening primrose oil is rich in gamma-linolenic acid, a valuable omega-6 fatty acid.
- Microsphere formulation enhances stability and controlled release of active ingredients.
Purpose:
- To determine optimal spray drying parameters for evening primrose oil microspheres.
- To evaluate the yield and entrapment efficiency of the prepared microspheres.
Summary:
- Spray drying parameters including charging rate, atomizing pressure, and inlet temperature were investigated using orthogonal experimental design.
- Optimal parameters identified: 3 mL/min charging rate, 100 kPa atomizing pressure, and 105°C inlet temperature.
- Gas chromatography (GC) and an internal standard method quantified gamma-linolenic acid methyl ester content.
Impact:
- Successfully prepared evening primrose oil microspheres meeting desired specifications.
- Identified charging rate as the primary factor influencing microsphere quality.
- Validated spray drying as a practical and effective method for evening primrose oil microsphere production.
