[1]
“Determination of phenolic contents and antioxidant activity test of ethanol extract of Sirih merah (Piper crocatum Ruiz & Pav.) leaves using the DPPH method”, J.Pendidik.Kim, vol. 13, no. 2, pp. 137–142, Aug. 2021, doi: 10.24114/jpkim.v13i2.26984.