R. ., D. Fardiaz, and T. Idiyanti, “Production Of Peptone From Waste Beer Industry Using Papain for Bacterial Growth Medium”, J. Teknol Industri Pangan, vol. 15, no. 2, p. 159, May 2010, Accessed: Mar. 19, 2026. [Online]. Available: https://journal.ipb.ac.id/jtip/article/view/570