Amin, A.; Waris, R. .; Sari, R. . NILAI RENDEMEN DAN ANALISIS FITOKIMIA EKSTRAK DAUN PECUT KUDA (Stachytarpheta Jamaicensis) BERDASARKAN LAMA EKSTRAKSI DENGAN METODE ULTRASONIC ASISSTED EXTRACTION: YIELD AND PHYTOCHEMICAL ANALYSIS OF "BLUE PORTERWEED” (STACHYTARPHETA JAMAICENSIS) LEAF EXTRACT BASED ON EXTRACTION LENGTH USING ULTRASONIC ASSISTED EXTRACTION. GK 2024, 16, 112-121.