Witono, Yuli, Aulanni’am ., and Simon Bambang Widjanarko. “Purification and Partial Characterization of Protease from Biduri (Calotropis Gigantea) Latex”. Jurnal Teknologi dan Industri Pangan 18, no. 1 (May 17, 2010): 1. Accessed December 28, 2025. https://journal.ipb.ac.id/jtip/article/view/369.