?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aulast=YULIANA&rft.aufirst=SISKA+ANA&rft.au=YULIANA%2C+SISKA+ANA&rft.inst=Universitas+Muhammadiyah+Prof.+DR.+HAMKA&rft.degree=Bachelor&rft.date=2022&rft.title=UJI+AKTIVITAS+ANTIOKSIDAN+SERTA+PENETAPAN+KADAR+FLAVONOID+DAN+FENOLIK+TOTAL+FRAKSI+ETIL+ASETAT+DAUN+PLETEKAN+(Ruellia+tuberosa+L.)+METODE+DPPH