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Therefore, its properties change if not properly preserved, and when the water is lost , it becomes brittle.
Therefore, its properties change if not properly preserved, and when the water is lost , it becomes brittle.
Therefore, it is not suitable for water absorbent preparations .
Also, substances that are not stable in moisture cannot be filled in capsules. In some markets there are requirements from consumers for the capsules to be of vegetable origin .
The main problem in finding an alternative to gelatin is to have a system that gelatinizes similar to gelatin, so that the same manufacturing machines and the same processes can be used. Since 1990 CE , a number of polymers have been produced for the manufacture of capsules, such as hypromellose, pullulan, chitosan, and pondac (polyvinylalcohol (PVA) and methacrylates are common polymers). Hypromellose was the most successful one because it overcomes the problem of fragility when the capsules are exposed to dry conditions.