Polymer(Korea), Vol.46, No.2, 229-237, March, 2022
히드록시프로필 메틸셀룰로오스와 에틸셀룰로오스를 이용한 고분자 기반 서방형 비타민 C 정제 설계 및 용출 규격 설정
Polymer-based Sustained Release Tablets of Vitamin C Using Hydroxypropyl Methylcellulose and Ethylcellulose and Their Dissolution Tolerances
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초록
본 연구에서는 서방형 비타민 C의 용출 규격 설정과 적절한 제형을 추천하기 위하여 서방형 비타민 C 정제 를 개발하였다. 직타법을 이용한 히드록시프로필 메틸셀룰로오스 정제(HTs)와 에틸셀룰로오스로 유동층 코팅된 과 립을 타정한 정제(ETs)가 제조되었다. 시판 제품 3종을 대상으로 비타민 C의 분해를 방지하기 위해 5% 메타인산 수용액 조건하에 수행된 비타민 C 용출 양상을 확보하였다. 해당 용출 양상을 기준선으로 하여, 유사성 인자(f2)를 통해 여러 제형의 비타민 C 용출 양상을 비교하였다. 최종 선택된 제형(HT7과 ET1)은 Korsmeyer-Peppas 모델에 근거한 약물 방출 메커니즘을 따르며, 이들의 용출 양상은 기준선 대비 ±15% 이내의 범위에 분포함을 확인하였다. 결과적으로 서방형 비타민 C에 대한 용출 규격은 15-40%(1시간), 25-70%(3시간), 50-90%(5시간), 그리고 80% 이 상(8시간)의 용출범위 내에서 설정되었다.
In this study, we developed sustained release tablets of vitamin C (ascorbic acid, AA) to establish dissolution tolerances and recommend appropriate formulations. We fabricated hydroxypropyl methylcellulose (HPMC) matrix tablets (HTs) and ethylcellulose (EC)-pelletized tablets (ETs) using direct compression and/or fluidized coating. Along with three commercially available products for reference, we acquired the AA dissolution profiles of the prepared samples in 5% metaphosphoric acid aqueous solution to prevent the degradation of AA. We then compared the release patterns using the similarity factor (f2). The selected two formulations (HT7 and ET1) showed drug release within the limit of ±15% of the reference curve, followed by the Korsmeyer-Peppas model. We found that the range of dissolution tolerance for the sustained release formulation was 15-40% (1 h), 25-70% (3 h), 50-90% (5 h), and ≥80% (8 h).
Keywords:vitamine C;hydroxypropyl methylcellulose;ethylcellulose;matrix tablet;dissolution tolerance
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