Fitrya, F.; Fithri, N. A.; Wijaya, D. P. Optimization of Acid Concentration and Hydrolysis Time in the Isolation of Microcrystalline Cellulose from Water Hyacinth (Eichornia Crassipes solm): doi.org 10.26538 Tjnpr V5i3.14. TJNPR 2021, 5, 503-508.