Novel drug delivery systems sem 7 (unit2) hand written notes pdf

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Microencapsulation is a process in which tiny particles called microparticles or microcapsules are created to enclose a substance or material within a polymeric shell. This technology allows the material to be protected from environmental factors and released at a controlled rate.

The process of microencapsulation includes several steps. First, the material that needs to be encapsulated is mixed with a polymer solution. Then, the mixture is processed using a variety of techniques such as spray-drying, coacervation, or emulsion to produce microparticles. These microparticles form a shell around the material and protect it from external factors such as light, heat, moisture, and oxygen.

Microencapsulation is used in a variety of applications such as food, pharmaceuticals, agriculture, personal care products, and industrial products. In the food industry, microencapsulation is used to protect flavors, colors, and nutrients, and also to improve the shelf life of certain products. In the pharmaceutical industry, microencapsulation is used to control the release of drugs to ensure a sustained therapeutic effect. In agriculture, microencapsulation is used to protect pesticides, herbicides, and fertilizers from degradation and ensure their controlled release.

Overall, microencapsulation is a useful technique for protecting and controlling the release of a wide range of materials and can be adapted for a variety of applications.