Innovative capsule shell formula: Glucomannan and carrageenan with natural butterfly pea flower (Clitoria Ternatea) extract colorantMuhtadi Muhtadi, Andi Suhendi, Haryoto Haryoto, Peni Indrayudha, Riza Maulana and Suranto SurantoBIO Web Conf., 180 (2025) 01007DOI: https://doi.org/10.1051/bioconf/202518001007