Susilowati, S. ., Astya, K. L. . and Bachri, U. S. . (2023) “REDUCING PEROXIDE VALUE IN USED COOKING OIL USING AMPO AS AN ADSORBENT”, International Journal of Eco-Innovation in Science and Engineering (IJEISE), 2(2). doi: 10.33005/ijeise.v2i02.35.