Putri, Yollanda, and Dina Fadhila. 2022. “Substance Dipeptidyl Peptidase IV in Purple Sweet Potatoes to Maintain Blood Sugar Levels”. Journal of Catalyst and Bioinformatics (Catalytic) 1 (01), 35-42. http://catalytic.ppj.unp.ac.id/index.php/jurnal/article/view/94.