PENGARUH PENGENTAL NATRIUM CARBOXYMETHYL CELLULOSE TERHADAP KARAKTERISTIK FISIKOKIMIA DAN SENSORIS SIRUP ROSELLA (Hibiscus sabdariffa L.). THE EFFECT OF NATRIUM CARBOXYMETHYL CELLULOSE THICKENER ON PHYSICOCHEMIC AND SENSORY CHARACTERISTICS OF ROSELLA SYRUP (Hibiscus sabdariffa L.) - ISMANTO, FELICIA CONNIE (2022)