Armi, F.S. et al. 2026. Optimization of the functional beverage formula from nipah leaves (Nypa fruticans) using simplex lattice design method and in vitro immunostimulatory activity: Optimasi formula minuman fungsional dari daun nipah (Nypa fruticans) menggunakan metode simplex lattice design dan aktivitas imunostimulatori in vitro. Jurnal Pengolahan Hasil Perikanan Indonesia. 29, 8 (Aug. 2026), 740–754. DOI:https://doi.org/10.17844/j50e3f37.