An Overview of Encapsulating LiquidsPrint
Although one can encapsulate liquids in a gelatin or vegetarian capsule, the truth is that the process of encapsulating is both a science and an art. The product usually depends on the weight and quality of the formulation as well as other variables that can affect it.
For this reason, it is always important to order a small quantity to determine the quality of the capsule before purchasing a bulk order. Unless one has already tested the product, one will not be able to determine if it will work out for the formulation and the equipment that one has on hand.
In order to determine which capsule would work best for your formulation, here are some of the capsules currently used in the industry and a short brief on these.
- Gelatin capsules. If you want a capsule that disintegrates fast and can be used for both powder and liquid then opt for a gelatin type. This capsule has been used in the industry for a long time and comes in different color ranges. This is best for powder and liquid formulations but is not ideal for oil. As it is derived from animal byproducts, it might not be suitable for some individuals.
- Enteric capsules. This capsule type is made of vegetarian materials and has a pH sensitive polymer added to the shell making it an acid resistant one. The capsule is ideal for formulations that need to pass the stomach juice and where disintegration should occur in the small intestine.
- Vegetarian capsules. The capsule is made of 100% vegetable byproduct making it safe for some if not all diets. Due to the rigid structure of the capsule, it can easily hold liquid and oil formulations. That said, it could also be used for powder formulation. These capsules take longer to disintegrate compared to the gelatin ones.
- Flavored capsules. These gelatin capsules have flavorings incorporated in them and smell the same as the flavor indicated.
Gelatin or Vegetarian
Whilst one can encapsulate liquid in gelatin capsule, it can get tricky and would depend on the right viscosity of the formulation as well as the capsule should be banded. A vegetarian capsule however can be more tolerant and the banded one is often recommended for encapsulating oil or liquid formulations.