daun7777 Indonesian Journal of Fundamental Sciences Vol.7, No.2, October 2021 Aktivitas Antioksidan Ekstrak Daun Mitragyna Speciosa Korth Hartati1, A. Irma Suryani2, Sahribulan3, Halifah77 Indonesian Journal of Fundamental Sciences Vol.7, No.2, October 2021 Aktivitas Antioksidan Ekstrak Daun Mitragyna Speciosa Korth Hartati1, A. Irma Suryani2, Sahribulan3, Halifah