• Enhanced Enteric Soluble Drug Release Behavior and Stability by Shellac and Alginate Composite Films
  • Jin Ik Lim

  • Department of Chemical Engineering, College of Engineering, Dankook University, Jukjeon-dong, Yongin-si, Gyeonggi-do 16890, Korea

  • 장내 용해성 약물 방출 거동 및 안정성 향상을 위한 셀락과 알지네이트 복합 필름
  • 임진익

  • 단국대학교 화학공학과

  • Reproduction, stored in a retrieval system, or transmitted in any form of any part of this publication is permitted only by written permission from the Polymer Society of Korea.

Abstract

Shellac and alginate composites were prepared to enteric coating agent and obtained efficient drug release results. When shellac is used alone, low bending strength and an easily broken film are formed, but by adding alginate, the bending strength and hydrophilicity are improved. Also insoluble in acidic solution, and a composite that easily dissolves at a neutral pH can be obtained. The optimal shellac and alginate concentration was obtained through drug release, mechanical properties, and solubility tests under various concentrations. Drug release behavior and solubility were tested at various pH through absorbance of released dye and remaining weight, and the death of U-87MG cells was observed in a release test of disulfiram from composite. The composite prepared in this study will be able to be applied as a multi-purpose coating agent that can achieve the effect of surgical anti-adhesion barrier, tissue engineered skin, and releasing various drugs.


셀락과 알지네이트 복합재를 장용 코팅제로 제조하여 효율적인 약물 방출 결과를 얻었다. 셀락 단독으로 사용하면 낮은 굽힘 강도와 쉽게 깨지는 필름이 형성되지만 알지네이트를 첨가하면 굽힘 강도와 친수성이 향상되는 결과를 얻을 수 있다. 또한 산성 용액에 녹지 않으며 중성 pH에서 쉽게 용해되는 복합재를 얻을 수 있었다. 다양한 농도에서 약물 방출, 기계적 특성, 용해도 테스트를 통해 최적의 셀락과 알지네이트 농도를 얻을 수 있었다. 무게측정과 방출된 염료의 흡광도를 통해 다양한 pH에서 약물 방출 거동과 용해도를 테스트했으며, 복합재로부터 디설피람 방출 테스트에서 U-87MG 세포의 사멸이 관찰되었다. 본 연구에서 제조한 복합재는 수술 유착 방지 장벽, 조직공학적 피부 및 다양한 약물 방출 효과를 달성할 수 있는 다목적 코팅제로 적용할 수 있을 것이다.


Keywords: enteric coating, drug release, shellac, alginate, excipients.

  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2024 Impact Factor : 0.6
  • Indexed in SCIE

This Article

  • 2025; 49(4): 458-463

    Published online Jul 25, 2025

  • 10.7317/pk.2025.49.4.458
  • Received on Jan 6, 2025
  • Revised on Feb 21, 2025
  • Accepted on Feb 28, 2025

Correspondence to

  • Jin Ik Lim
  • Department of Chemical Engineering, College of Engineering, Dankook University, Jukjeon-dong, Yongin-si, Gyeonggi-do 16890, Korea

  • E-mail: limjinik@dankook.ac.kr