Mai Thi Hoai Thuong; Dao Thi Thu Thao; Tan Van Hau; Le Thi Hong Thuy; Nguyen Thi Luong. OPTIMIZATION OF ANTHOCYANIN EXTRACTION PROCESS FROM PURPLE SWEET POTATO PEEL (Ipomoea Batatas L.) USING ULTRASOUND-ASSISTED ENZYMATIC EXTRACTION METHOD. HUIT_OJS 2026, 26 (1E), 112. https://doi.org/10.62985/j.huit_ojs.vol26.no1E.347.