Hastuti, A.A.M.B., Zai, K., Risdanareni, P., Karolina, R. and Mustafa, I. 2024. Physico-chemical and structural characterization of mixed natural polymer hydrogels under simulated gastrointestinal fluid. Indonesian Journal of Pharmacy. (May 2024). DOI:https://doi.org/10.22146/ijp.6241.