Alginate-Based Microparticles Containing Albumin and Doxorubicin: Nanoarchitectonics and Characterization

Alginate-based microcapsules have gained considerable attention as drug delivery systems due to their biocompatibility, biodegradability, and ability to encapsulate therapeutic agents. In this study, microcapsules were synthesized by crosslinking with calcium ions, with albumin serving as a carrier for doxorubicin. The goal was to develop a stable system capable of controlled drug release under physiological conditions, with potential applications in cancer therapy. Sodium alginate was used as a base polymer, which formed a stable matrix after crosslinking with calcium ions. The resulting microcapsules showed a uniform size distribution in the microscale range. Analyses confirmed their stability in simulated physiological environments with minimal degradation. Observations revealed a homogeneous structure of the microcapsules, while incubation studies confirmed controlled drug release triggered by pH changes. The results indicate that alginate–albumin microcapsules can serve as an effective platform for drug delivery, especially in cancer therapy and other biomedical applications.