BaehakiA., LestariS. D., and RomadhoniA. R. “Protein Hydrolysis from Catfish Prepared by Papain Enzyme and Antioxidant Activity of Hydrolyzate”. Jurnal Pengolahan Hasil Perikanan Indonesia, Vol. 18, no. 3, Dec. 2015, doi:10.17844/jphpi.v18i3.11208.