Kefas, Haruna Mavakumba, Cemre Avsar, Abdulhalim Musa Abubakar, Shamsiyyah Yakubu Saleh, and Indianraj N. 2024. “Temperature and PH Influence During Citric Acid Production from Orange Peels Using Aspergillus Niger”. Optimality, November. https://doi.org/10.22105/opt.vi.52.