. D. Y. . Rahman, “Phycocyanin production from Galdieria sulphuraria 009 in palm oil mill effluent: growth, extraction, and antioxidant activity: Produksi fikosianin dari Galdieria sulphuraria 009 dalam limbah cair pabrik kelapa sawit: pertumbuhan, ekstraksi, dan aktivitas antioksidan”, JPHPI, vol. 28, no. 5, pp. 494–509, May 2025, doi: 10.17844/jphpi.v28i5.63115.