Abduh, Muhammad Yusuf, Wahyu Zuliansyah, Lestari Aprina, and Natalie Arazella. “Effect of Pectin Biodegradation With Aspergillus Niger on Total Flavonoid Content of Citrus Limon L.)”. Jurnal Biodjati 4, no. 2 (November 29, 2019): 194–203. Accessed April 3, 2025. https://journal.uinsgd.ac.id/index.php/biodjati/article/view/4537.