Nadjamuddin, M.; Auliah, N. .; Mulyadin; Tajuddin, Z. .; Andriawan, R. . Test the Antioxidant Effectiveness of Oyster Mushroom (Pleurotus Ostreatus) Ethyl Acetate Fraction Cream Formula Using FRAP (Ferric Reducing Antioxidant Power) and ABTS (2,2’-Azino-Bis-(3-Ethylbenzothiazoline-6-Sulphonic Acid) Methods). jppipa, pendidikan ipa, fisika, biologi, kimia 2023, 9, 10985-10990.