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maceutical gelatin capsules, gelatin derived from animal skin, tendons, bone collagen. The main component of HPMC capsules 2 - hydroxypropyl methyl cellulose, is typically obtained by the hydrolysis of plant cellulose, prepared by etherification.
2£©The chemical structure of the capsule shell, different stability
Lysine remaining gelatin, crosslinking reaction may occur, and HPMC chemically stable, cross-linking reaction does not occur