Rahmawati, Istiqomah, Nadhilah Shabrina, Boy Fachri, Helda Amini, Bekti Palupi, Meta Rizkiana, Nurtsulutsiyah Nurtsulutsiyah, Shima Pradipta, Diza Afwal, and Muhammad Reza. 2022. “Effect of Time Variation on Chlorophyll Concentration in Cocoa Leaf Extraction Using the UAE (Ultrasonic Assisted Extraction) Method”. Jurnal Kartika Kimia 5 (1), 58-63. https://doi.org/10.26874/jkk.v5i1.97.